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CVS log for src/sys/ufs/lfs/lfs_extern.h

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Revision 1.114.4.1: download - view: text, markup, annotated - select for diffs
Mon Aug 17 10:30:22 2020 UTC (4 years, 6 months ago) by martin
Branches: netbsd-9
CVS tags: netbsd-9-4-RELEASE, netbsd-9-3-RELEASE, netbsd-9-2-RELEASE, netbsd-9-1-RELEASE
Diff to: previous 1.114: preferred, colored; next MAIN 1.115: preferred, colored
Changes since revision 1.114: +5 -3 lines
Pull up following revision(s) (requested by riastradh in ticket #1050):

	sys/ufs/lfs/lfs_subr.c: revision 1.101
	sys/ufs/lfs/lfs_subr.c: revision 1.102
	sys/ufs/lfs/lfs_inode.c: revision 1.158
	sys/ufs/lfs/lfs_inode.h: revision 1.25
	sys/ufs/lfs/lfs_balloc.c: revision 1.95
	sys/ufs/lfs/lfs_pages.c: revision 1.21
	sys/ufs/lfs/lfs_vnops.c: revision 1.330
	sys/ufs/lfs/lfs_alloc.c: revision 1.140 (patch)
	sys/ufs/lfs/lfs_alloc.c: revision 1.141 (patch)
	lib/libp2k/p2k.c: revision 1.72
	sys/ufs/lfs/lfs.h: revision 1.205
	sys/ufs/lfs/lfs.h: revision 1.206
	sys/ufs/lfs/lfs_segment.c: revision 1.284
	sys/ufs/lfs/lfs.h: revision 1.207
	sys/ufs/lfs/lfs_segment.c: revision 1.285
	sys/ufs/lfs/lfs_debug.c: revision 1.55
	sys/ufs/lfs/lfs_rename.c: revision 1.23
	usr.sbin/dumplfs/dumplfs.c: revision 1.65
	sys/ufs/lfs/lfs_vfsops.c: revision 1.371
	sys/arch/i386/stand/efiboot/bootx64/Makefile: revision 1.3
	sys/ufs/lfs/lfs_vfsops.c: revision 1.372
	sys/ufs/lfs/lfs_vfsops.c: revision 1.373
	sbin/fsck_lfs/pass1.c: revision 1.46
	sys/ufs/lfs/lfs_vnops.c: revision 1.326
	sys/ufs/lfs/lfs_vnops.c: revision 1.327
	sys/ufs/lfs/lfs_vfsops.c: revision 1.375 (patch)
	sys/ufs/lfs/lfs_vnops.c: revision 1.328
	sys/ufs/lfs/lfs_subr.c: revision 1.98
	sys/ufs/lfs/lfs_extern.h: revision 1.116
	sys/ufs/lfs/lfs_vnops.c: revision 1.329
	sys/ufs/lfs/lfs_subr.c: revision 1.99
	sys/ufs/lfs/lfs_extern.h: revision 1.117
	sys/ufs/lfs/lfs_accessors.h: revision 1.49
	sys/ufs/lfs/lfs_extern.h: revision 1.118
	sys/rump/fs/lib/liblfs/Makefile: revision 1.15
	sys/ufs/lfs/lfs_bio.c: revision 1.146 (patch)
	sys/ufs/lfs/lfs_bio.c: revision 1.147
	sys/ufs/lfs/lfs_subr.c: revision 1.100

Fix kassert in lfs by initializing vp first.

Use a marker node to iterate lfs_dchainhd / i_lfs_dchain.

I believe elements can be removed while the lock is dropped,
including the next node we're hanging on to.

Just use VOP_BWRITE for lfs_bwrite_log.
Hope this doesn't cause trouble with vfs_suspend.

Teach lfs to transition ro<->rw.

Prevent new dirops while we issue lfs_flush_dirops.

lfs_flush_dirops assumes (by KASSERT((ip->i_state & IN_ADIROP) == 0))
that vnodes on the dchain will not become involved in active dirops
even while holding no other locks (lfs_lock, v_interlock), so we must
set lfs_writer here.  All other callers already set lfs_writer.

We set fs->lfs_writer++ without explicitly doing lfs_writer_enter
because
(a) we already waited for the dirops to drain, and
(b) we hold lfs_lock and cannot drop it before setting lfs_writer.

Assert lfs_writer where I think we can now prove it.

Serialize access to the splay tree with lfs_lock.

Change some cheap KDASSERT into KASSERT.

Take a reference and fix assertions in lfs_flush_dirops.
Fixes panic:
KASSERT((ip->i_state & IN_ADIROP) == 0) at lfs_vnops.c:1670
lfs_flush_dirops
lfs_check
lfs_setattr
VOP_SETATTR
change_mode
sys_fchmod
syscall

This assertion -- and the assertion that vp->v_uflag has VU_DIROP set
-- is valid only until we release lfs_lock, because we may race with
lfs_unmark_dirop which will remove the nodes and change the flags.

Further, vp itself is valid only as long as it is referenced, which it
is as long as it's on the dchain, but lfs_unmark_dirop drops the
dchain's reference.

Don't lfs_writer_enter while holding v_interlock.

There's no need to lfs_writer_enter at all here, as far as I can see.
lfs_flush_fs will do it for us.

Break deadlock in PR kern/52301.

The lock order is lfs_writer -> lfs_seglock.  The problem in 52301 is
that lfs_segwrite violates this lock order by sometimes doing
lfs_seglock -> lfs_writer, either (a) when doing a checkpoint or (b),
opportunistically, when there are no dirops pending.  Both cases can
deadlock, because dirops sometimes take the seglock (lfs_truncate,
lfs_valloc, lfs_vfree):
(a) There may be dirops pending, and they may be waiting for the
seglock, so we can't wait for them to complete while holding the
seglock.
(b) The test for fs->lfs_dirops == 0 happens unlocked, and the state
may change by the time lfs_writer_enter acquires lfs_lock.

To resolve this in each case:
(a) Do lfs_writer_enter before lfs_seglock, since we will need it
unconditionally anyway.  The worst performance impact of this should
be that some dirops get delayed a little bit.
(b) Create a new lfs_writer_tryenter to use at this point so that the
test for fs->lfs_dirops == 0 and the acquisition of lfs_writer happen
atomically under lfs_lock.

Initialize/destroy lfs_allclean_wakeup in modcmd, not lfs_mountfs.

Fixes reloading lfs.kmod.

In lfs_update, hold lfs_writer around lfs_vflush.

Otherwise, we might do
lfs_vflush
-> lfs_seglock
-> lfs_segwait(SEGM_CKP)
   -> lfs_writer_enter
which is the reverse of the lfs_writer -> lfs_seglock ordering.

Call lfs_orphan in lfs_rename while we're still in the dirop.
lfs_writer_enter can't fail; keep it simple and don't pretend it can.

Assert that mtsleep can't fail either -- it doesn't catch signals and
there's no timeout.

Teach LFS_ORPHAN_NEXTFREE about lfs64.

Dust off the orphan detection code and try to make it work.

Fix !DIAGNOSTIC compile

Fix userland references to LFS_ORPHAN_NEXTFREE.

Forgot to grep for these or do a full distribution build, oops!

Fix missing <sys/evcnt.h> by removing the evcnts instead.

Just wanted to confirm that a race might happen, and indeed it did.
These serve little diagnostic value otherwise.

OR into bp->b_cflags; don't overwrite.

CTASSERT lfs on-disk structure sizes.

Avoid misaligned access to lfs64 on-disk records in memory.
lfs64 directory entries are only 32-bit aligned in order to conserve
space in directory blocks, and we had a hack to stuff a 64-bit inode
in them.  This replaces the hack by __aligned(4) __packed, and goes
further:

1. It's not clear that all the other lfs64 data structures are 64-bit
   aligned on disk to begin with.  We can go through these later and
   upgrade them from
        struct foo64 {
                ...
        } __aligned(4) __packed;
        union foo {
                struct foo64 f64;
                ...
        };
   to
        struct foo64 {
                ...
        };
        union foo {
                struct foo64 f64 __aligned(8);
                ...
        } __aligned(4) __packed;
   if we really want to take advantage of 64-bit memory accesses.
   However, the __aligned(4) __packed must remain on the union
   because:
2. We access even the lfs32 data structures via a union that has
   lfs64 members, and it turns out that compilers will assume access
   through a union with 64-bit aligned members implies the whole
   union has 64-bit alignment, even if we're only accessing a 32-bit
   aligned member.

Fix clang build after packed lfs64 accessor change.

Suppress spurious address-of-packed error in rump lfs too.

Revision 1.113.4.2: download - view: text, markup, annotated - select for diffs
Wed Apr 8 14:09:04 2020 UTC (4 years, 10 months ago) by martin
Branches: phil-wifi
Diff to: previous 1.113.4.1: preferred, colored; branchpoint 1.113: preferred, colored; next MAIN 1.114: preferred, colored
Changes since revision 1.113.4.1: +6 -4 lines
Merge changes from current as of 20200406

Revision 1.114.6.1: download - view: text, markup, annotated - select for diffs
Sat Feb 29 20:21:11 2020 UTC (4 years, 11 months ago) by ad
Branches: ad-namecache
Diff to: previous 1.114: preferred, colored; next MAIN 1.115: preferred, colored
Changes since revision 1.114: +6 -4 lines
Sync with head.

Revision 1.118: download - view: text, markup, annotated - select for diffs
Sun Feb 23 08:49:46 2020 UTC (4 years, 11 months ago) by riastradh
Branches: MAIN
CVS tags: thorpej-ifq-base, thorpej-ifq, thorpej-i2c-spi-conf2-base, thorpej-i2c-spi-conf2, thorpej-i2c-spi-conf-base, thorpej-i2c-spi-conf, thorpej-futex2-base, thorpej-futex2, thorpej-futex-base, thorpej-futex, thorpej-cfargs2-base, thorpej-cfargs2, thorpej-cfargs-base, thorpej-cfargs, thorpej-altq-separation-base, thorpej-altq-separation, phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, perseant-exfatfs-base-20240630, perseant-exfatfs-base, perseant-exfatfs, netbsd-10-base, netbsd-10-1-RELEASE, netbsd-10-0-RELEASE, netbsd-10-0-RC6, netbsd-10-0-RC5, netbsd-10-0-RC4, netbsd-10-0-RC3, netbsd-10-0-RC2, netbsd-10-0-RC1, netbsd-10, is-mlppp-base, is-mlppp, cjep_sun2x-base1, cjep_sun2x-base, cjep_sun2x, cjep_staticlib_x-base1, cjep_staticlib_x-base, cjep_staticlib_x, bouyer-xenpvh-base2, bouyer-xenpvh-base1, bouyer-xenpvh-base, bouyer-xenpvh, bouyer-sunxi-drm-base, bouyer-sunxi-drm, ad-namecache-base3, HEAD
Diff to: previous 1.117: preferred, colored
Changes since revision 1.117: +3 -2 lines
Dust off the orphan detection code and try to make it work.

Revision 1.117: download - view: text, markup, annotated - select for diffs
Sun Feb 23 08:42:53 2020 UTC (4 years, 11 months ago) by riastradh
Branches: MAIN
Diff to: previous 1.116: preferred, colored
Changes since revision 1.116: +2 -2 lines
lfs_writer_enter can't fail; keep it simple and don't pretend it can.

Assert that mtsleep can't fail either -- it doesn't catch signals and
there's no timeout.

Revision 1.116: download - view: text, markup, annotated - select for diffs
Sun Feb 23 08:40:37 2020 UTC (4 years, 11 months ago) by riastradh
Branches: MAIN
Diff to: previous 1.115: preferred, colored
Changes since revision 1.115: +2 -1 lines
Break deadlock in PR kern/52301.

The lock order is lfs_writer -> lfs_seglock.  The problem in 52301 is
that lfs_segwrite violates this lock order by sometimes doing
lfs_seglock -> lfs_writer, either (a) when doing a checkpoint or (b),
opportunistically, when there are no dirops pending.  Both cases can
deadlock, because dirops sometimes take the seglock (lfs_truncate,
lfs_valloc, lfs_vfree):

(a) There may be dirops pending, and they may be waiting for the
seglock, so we can't wait for them to complete while holding the
seglock.

(b) The test for fs->lfs_dirops == 0 happens unlocked, and the state
may change by the time lfs_writer_enter acquires lfs_lock.

To resolve this in each case:

(a) Do lfs_writer_enter before lfs_seglock, since we will need it
unconditionally anyway.  The worst performance impact of this should
be that some dirops get delayed a little bit.

(b) Create a new lfs_writer_tryenter to use at this point so that the
test for fs->lfs_dirops == 0 and the acquisition of lfs_writer happen
atomically under lfs_lock.

Revision 1.115: download - view: text, markup, annotated - select for diffs
Tue Feb 18 20:23:17 2020 UTC (5 years ago) by chs
Branches: MAIN
Diff to: previous 1.114: preferred, colored
Changes since revision 1.114: +2 -2 lines
remove the aiodoned thread.  I originally added this to provide a thread context
for doing page cache iodone work, but since then biodone() has changed to
hand off all iodone work to a softint thread, so we no longer need the
special-purpose aiodoned thread.

Revision 1.113.4.1: download - view: text, markup, annotated - select for diffs
Mon Jun 10 22:09:58 2019 UTC (5 years, 8 months ago) by christos
Branches: phil-wifi
Diff to: previous 1.113: preferred, colored
Changes since revision 1.113: +1 -2 lines
Sync with HEAD

Revision 1.113.2.1: download - view: text, markup, annotated - select for diffs
Thu Sep 6 06:56:48 2018 UTC (6 years, 5 months ago) by pgoyette
Branches: pgoyette-compat
CVS tags: pgoyette-compat-merge-20190127
Diff to: previous 1.113: preferred, colored; next MAIN 1.114: preferred, colored
Changes since revision 1.113: +1 -2 lines
Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)

Revision 1.114: download - view: text, markup, annotated - select for diffs
Wed Aug 22 01:05:24 2018 UTC (6 years, 5 months ago) by msaitoh
Branches: MAIN
CVS tags: phil-wifi-20191119, phil-wifi-20190609, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, netbsd-9-base, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, isaki-audio2-base, isaki-audio2, ad-namecache-base2, ad-namecache-base1, ad-namecache-base
Branch point for: netbsd-9, ad-namecache
Diff to: previous 1.113: preferred, colored
Changes since revision 1.113: +1 -2 lines
- Cleanup for dynamic sysctl:
  - Remove unused *_NAMES macros for sysctl.
  - Remove unused *_MAXID for sysctls.
- Move CTL_MACHDEP sysctl definitions for m68k into m68k/include/cpu.h and
  use them on all m68k machines.

Revision 1.98.2.3: download - view: text, markup, annotated - select for diffs
Sun Dec 3 11:39:22 2017 UTC (7 years, 2 months ago) by jdolecek
Branches: tls-maxphys
Diff to: previous 1.98.2.2: preferred, colored; branchpoint 1.98: preferred, colored; next MAIN 1.99: preferred, colored
Changes since revision 1.98.2.2: +22 -30 lines
update from HEAD

Revision 1.111.10.1: download - view: text, markup, annotated - select for diffs
Mon Oct 30 09:29:04 2017 UTC (7 years, 3 months ago) by snj
Branches: netbsd-8
CVS tags: netbsd-8-3-RELEASE, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, matt-nb8-mediatek-base, matt-nb8-mediatek
Diff to: previous 1.111: preferred, colored; next MAIN 1.112: preferred, colored
Changes since revision 1.111: +2 -2 lines
Pull up following revision(s) (requested by maya in ticket #330):
	sbin/fsck_lfs/inode.c: 1.69
	sbin/fsck_lfs/lfs.c: 1.73
	sbin/fsck_lfs/pass6.c: 1.50
	sbin/fsck_lfs/segwrite.c: 1.46
	sys/ufs/lfs/lfs.h: 1.202-1.203
	sys/ufs/lfs/lfs_accessors.h: 1.48
	sys/ufs/lfs/lfs_alloc.c: 1.136-1.137
	sys/ufs/lfs/lfs_balloc.c: 1.94
	sys/ufs/lfs/lfs_bio.c: 1.141
	sys/ufs/lfs/lfs_extern.h: 1.113
	sys/ufs/lfs/lfs_inode.c: 1.156-1.157
	sys/ufs/lfs/lfs_inode.h: 1.20, 1.21, 1.23
	sys/ufs/lfs/lfs_itimes.c: 1.20
	sys/ufs/lfs/lfs_pages.c: 1.13-1.15
	sys/ufs/lfs/lfs_rename.c: 1.22
	sys/ufs/lfs/lfs_segment.c: 1.270-1.275
	sys/ufs/lfs/lfs_subr.c: 1.94-1.97
	sys/ufs/lfs/lfs_syscalls.c: 1.175
	sys/ufs/lfs/lfs_vfsops.c: 1.360
	sys/ufs/lfs/lfs_vnops.c: 1.316-1.321
	sys/ufs/lfs/ulfs_inode.c: 1.20
	sys/ufs/lfs/ulfs_inode.h: 1.24
	sys/ufs/lfs/ulfs_lookup.c: 1.41
	sys/ufs/lfs/ulfs_quota2.c: 1.31
	sys/ufs/lfs/ulfs_readwrite.c: 1.24
	sys/ufs/lfs/ulfs_vnops.c: 1.49-1.50
Update inode member i_flag --> i_state to keep up with kernel changes
Move definition of IN_ALLMOD near the flag it's a mask for.
Now we can see that it doesn't match all the flags, but changing that will
require more careful thought.
Correct confusion between i_flag and i_flags
These will have to be renamed.
Spotted by Riastradh, thanks!
Add an XXX about the missing flags so it's not buried in a commit
message.
now the XXX count for LFS is 260
Rename i_flag to i_state.
The similarity to i_flags has previously caused errors.
Use continue to denote the no-op loop to match netbsd style
newline for extra clarity.
It isn't safe to drain dirops with seglock held, it'll deadlock if there
are any dirops. drain before grabbing seglock.
lfs_dirops == 0 is always true (as we already drained dirops), so omit
that part of the comparison.
Fixes a lot of LFS deadlocks. PR kern/52301
Many thanks to dholland for help analyzing coredumps
Ifdef out KDASSERT which fires on my machine.
Deduplicate sanity check that seglock is held on segunlock
Revert r1.272 fix to PR kern/52301, the performance hit is making things
unusable.
change lfs_nextsegsleep and lfs_allclean_wakeup to use condvar
XXX had to use lfs_lock in lfs_segwait, removed kernel_lock, is this
appropriate?
fix buffer overflow/KASSERT when cookies are supplied
lfs no longer uses the ffs-style struct direct, use the correct minimum
size
from dholland
XXX more wrong
Consistently use {,UN}MARK_VNODE macros rather than function calls.
Not much point doing anything after a panic call
Ask some question about the code in a XXX comment
XXX question our double-flushing of dirops
Fix typo in comment

Revision 1.101.6.5: download - view: text, markup, annotated - select for diffs
Mon Aug 28 17:53:17 2017 UTC (7 years, 5 months ago) by skrll
Branches: nick-nhusb
Diff to: previous 1.101.6.4: preferred, colored; branchpoint 1.101: preferred, colored; next MAIN 1.102: preferred, colored
Changes since revision 1.101.6.4: +4 -2 lines
Sync with HEAD

Revision 1.113: download - view: text, markup, annotated - select for diffs
Wed Jul 26 16:42:37 2017 UTC (7 years, 6 months ago) by maya
Branches: MAIN
CVS tags: tls-maxphys-base-20171202, phil-wifi-base, pgoyette-compat-base, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, nick-nhusb-base-20170825
Branch point for: phil-wifi, pgoyette-compat
Diff to: previous 1.112: preferred, colored
Changes since revision 1.112: +2 -2 lines
change lfs_nextsegsleep and lfs_allclean_wakeup to use condvar

XXX had to use lfs_lock in lfs_segwait, removed kernel_lock, is this
appropriate?

Revision 1.112: download - view: text, markup, annotated - select for diffs
Thu Jun 8 01:23:01 2017 UTC (7 years, 8 months ago) by chs
Branches: MAIN
CVS tags: perseant-stdc-iso10646-base, perseant-stdc-iso10646
Diff to: previous 1.111: preferred, colored
Changes since revision 1.111: +3 -1 lines
move some buffer cache internals declarations from buf.h to vfs_bio.c.
this is needed to avoid name conflicts with ZFS and also
makes it clearer that other code shouldn't be messing with these.
remove the LFS debug code that poked around in bufqueues and
remove the BQ_EMPTY bufqueue since nothing uses it anymore.
provide a function to let LFS and wapbl read the value of nbuf for now.

Revision 1.101.6.4: download - view: text, markup, annotated - select for diffs
Sat Jul 9 20:25:25 2016 UTC (8 years, 7 months ago) by skrll
Branches: nick-nhusb
Diff to: previous 1.101.6.3: preferred, colored; branchpoint 1.101: preferred, colored
Changes since revision 1.101.6.3: +4 -4 lines
Sync with HEAD

Revision 1.111: download - view: text, markup, annotated - select for diffs
Mon Jun 20 03:29:52 2016 UTC (8 years, 8 months ago) by dholland
Branches: MAIN
CVS tags: prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, nick-nhusb-base-20170204, nick-nhusb-base-20161204, nick-nhusb-base-20161004, nick-nhusb-base-20160907, netbsd-8-base, localcount-20160914, jdolecek-ncq-base, jdolecek-ncq, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan
Branch point for: netbsd-8
Diff to: previous 1.110: preferred, colored
Changes since revision 1.110: +4 -4 lines
u_int{8,16,32,64}_t -> uint{8,16,32,64}_t in remaining lfs headers.

Revision 1.101.6.3: download - view: text, markup, annotated - select for diffs
Tue Sep 22 12:06:17 2015 UTC (9 years, 4 months ago) by skrll
Branches: nick-nhusb
Diff to: previous 1.101.6.2: preferred, colored; branchpoint 1.101: preferred, colored
Changes since revision 1.101.6.2: +12 -10 lines
Sync with HEAD

Revision 1.110: download - view: text, markup, annotated - select for diffs
Wed Aug 12 18:28:01 2015 UTC (9 years, 6 months ago) by dholland
Branches: MAIN
CVS tags: nick-nhusb-base-20160529, nick-nhusb-base-20160422, nick-nhusb-base-20160319, nick-nhusb-base-20151226, nick-nhusb-base-20150921
Diff to: previous 1.109: preferred, colored
Changes since revision 1.109: +8 -5 lines
Hack up dinode usage to be 64 vs. 32 as needed. Part 1.

(This part changes the native lfs code; the ufs-derived code already
has 64 vs. 32 logic, but as aspects of it are unsafe, and don't
entirely interoperate cleanly with the lfs 64/32 stuff, pass 2 will be
rehashing that.)

Revision 1.109: download - view: text, markup, annotated - select for diffs
Wed Aug 12 18:23:47 2015 UTC (9 years, 6 months ago) by dholland
Branches: MAIN
Diff to: previous 1.108: preferred, colored
Changes since revision 1.108: +3 -3 lines
Move the security checks for lfs_bmapv/lfs_markv into those functions.
(instead of the system call entry points)

Avoids duplication.

While touching these, pass the lwp around instead of the proc -- the
latter was there for no other reason than because once upon a time
struct proc was the first argument of all syscalls.

(For that matter, why not just use curlwp instead of passing it around
all over the place? The cost of passing it to every syscall probably
exceeds the cost of loading it from curcpu, even on machines where
it's not just kept in a register all the time.)

Revision 1.108: download - view: text, markup, annotated - select for diffs
Wed Aug 12 18:23:16 2015 UTC (9 years, 6 months ago) by dholland
Branches: MAIN
Diff to: previous 1.107: preferred, colored
Changes since revision 1.107: +1 -2 lines
Fix assorted 64->32 truncations related to BLOCK_INFO.

Also make note of a cleaner limitation: it seems that when it goes to
coalesce discontiguous files, it mallocs an array with one BLOCK_INFO
for every block in the file. Therefore, with 64-bit LFS, on a 32-bit
platform it will be possible to have files large enough to overflow
the cleaner's address space. Currently these will be skipped and cause
warnings via syslog.

At some point someone should rewrite the logic to coalesce files to
use chunks of some reasonable size, as discontinuity between such
chunks is immaterial and mallocing this much space is silly and
fragile. Also, the kernel only accepts up to 65536 blocks at a time
for bmapv and markv, so processing more than this at once probably
isn't useful and may not even work currently. I don't want to change
this around just now as it's not entirely trivial.

Revision 1.107: download - view: text, markup, annotated - select for diffs
Sun Aug 2 18:18:10 2015 UTC (9 years, 6 months ago) by dholland
Branches: MAIN
Diff to: previous 1.106: preferred, colored
Changes since revision 1.106: +2 -2 lines
Add a (draft) 64-bit superblock. Make things build again.

Add pieces of support for using both superblock types where
convenient, and specifically to the superblock accessors, but don't
actually enable it anywhere.

First substantive step on PR 50000.

Revision 1.106: download - view: text, markup, annotated - select for diffs
Sun Aug 2 18:10:08 2015 UTC (9 years, 6 months ago) by dholland
Branches: MAIN
Diff to: previous 1.105: preferred, colored
Changes since revision 1.105: +2 -2 lines
Second batch of 64 -> 32 truncations in lfs, along with more minor
tidyups and corrections in passing.

Revision 1.101.6.2: download - view: text, markup, annotated - select for diffs
Sat Jun 6 14:40:30 2015 UTC (9 years, 8 months ago) by skrll
Branches: nick-nhusb
Diff to: previous 1.101.6.1: preferred, colored; branchpoint 1.101: preferred, colored
Changes since revision 1.101.6.1: +4 -19 lines
Sync with HEAD

Revision 1.105: download - view: text, markup, annotated - select for diffs
Sun May 31 15:48:03 2015 UTC (9 years, 8 months ago) by hannken
Branches: MAIN
CVS tags: nick-nhusb-base-20150606
Diff to: previous 1.104: preferred, colored
Changes since revision 1.104: +3 -7 lines
Change lfs from hash table to vcache.

- Change lfs_valloc() to return an inode number and version instead of
  a vnode and move lfs_ialloc() and lfs_vcreate() to new lfs_init_vnode().

- Add lfs_valloc_fixed() to allocate a known inode, used by kernel
  roll forward.

- Remove lfs_*ref(), these functions cannot coexist with vcache and
  their commented behaviour is far away from their implementation.

- Add the cleaner lwp and blockinfo to struct ulfsmount so lfs_loadvnode()
  may use hints from the cleaner.

- Remove vnode locks from ulfs_lookup() like we did with ufs_lookup().

Revision 1.104: download - view: text, markup, annotated - select for diffs
Sun May 31 15:45:18 2015 UTC (9 years, 8 months ago) by hannken
Branches: MAIN
Diff to: previous 1.103: preferred, colored
Changes since revision 1.103: +1 -2 lines
Make lfs_fastvget() private to lfs_syscalls.c, change it to take the
BLOCK_INFO and vnode lock type instead of the inode disk address and
return the vnode locked.

Change lfs_markv() and lfs_bmapv() to work on locked vnodes.

Revision 1.103: download - view: text, markup, annotated - select for diffs
Sun May 31 15:44:31 2015 UTC (9 years, 8 months ago) by hannken
Branches: MAIN
Diff to: previous 1.102: preferred, colored
Changes since revision 1.102: +2 -12 lines
Use VFS_PROTOS() for lfs.
Rename conflicting struct lfs field "lfs_start" to "lfs_s0addr".

No functional change.

Revision 1.101.6.1: download - view: text, markup, annotated - select for diffs
Mon Apr 6 15:18:32 2015 UTC (9 years, 10 months ago) by skrll
Branches: nick-nhusb
Diff to: previous 1.101: preferred, colored
Changes since revision 1.101: +4 -1 lines
Sync with HEAD

Revision 1.102: download - view: text, markup, annotated - select for diffs
Fri Mar 27 17:27:56 2015 UTC (9 years, 10 months ago) by riastradh
Branches: MAIN
CVS tags: nick-nhusb-base-20150406
Diff to: previous 1.101: preferred, colored
Changes since revision 1.101: +4 -1 lines
Disentangle buffer-cached I/O from page-cached I/O in UFS.

Page-cached I/O is used for regular files, and is initiated by VFS
users such as userland and NFS.

Buffer-cached I/O is used for directories and symlinks, and is issued
only internally by UFS.

New UFS routine ufs_bufio replaces vn_rdwr for internal use.
ufs_bufio is implemented by new UFS operations uo_bufrd/uo_bufwr,
which sit in ufs_readwrite.c alongside the VOP_READ/VOP_WRITE
implementations.

I preserved the code as much as possible and will leave further
simplification for future commits.  I kept the ulfs_readwrite.c
copypasta close to ufs_readwrite.c in case we ever want to merge them
back; likewise ext2fs_readwrite.c.

No externally visible semantic change.  All atf fs tests still pass.

Revision 1.98.2.2: download - view: text, markup, annotated - select for diffs
Wed Aug 20 00:04:44 2014 UTC (10 years, 6 months ago) by tls
Branches: tls-maxphys
Diff to: previous 1.98.2.1: preferred, colored; branchpoint 1.98: preferred, colored
Changes since revision 1.98.2.1: +3 -0 lines
Rebase to HEAD as of a few days ago.

Revision 1.96.30.2: download - view: text, markup, annotated - select for diffs
Thu May 22 11:41:19 2014 UTC (10 years, 9 months ago) by yamt
Branches: yamt-pagecache
Diff to: previous 1.96.30.1: preferred, colored; branchpoint 1.96: preferred, colored; next MAIN 1.97: preferred, colored
Changes since revision 1.96.30.1: +8 -5 lines
sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

Revision 1.101: download - view: text, markup, annotated - select for diffs
Tue Mar 18 18:20:44 2014 UTC (10 years, 11 months ago) by riastradh
Branches: MAIN
CVS tags: yamt-pagecache-base9, tls-maxphys-base, tls-earlyentropy-base, tls-earlyentropy, rmind-smpnet-nbase, rmind-smpnet-base, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, nick-nhusb-base, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7
Branch point for: nick-nhusb
Diff to: previous 1.100: preferred, colored
Changes since revision 1.100: +1 -1 lines
Merge riastradh-drm2 to HEAD.

Revision 1.99.2.1: download - view: text, markup, annotated - select for diffs
Wed Aug 28 23:59:38 2013 UTC (11 years, 5 months ago) by rmind
Branches: rmind-smpnet
Diff to: previous 1.99: preferred, colored; next MAIN 1.100: preferred, colored
Changes since revision 1.99: +4 -1 lines
sync with head

Revision 1.99.4.1: download - view: text, markup, annotated - select for diffs
Tue Jul 23 21:07:38 2013 UTC (11 years, 6 months ago) by riastradh
Branches: riastradh-drm2
Diff to: previous 1.99: preferred, colored; next MAIN 1.100: preferred, colored
Changes since revision 1.99: +4 -1 lines
sync with HEAD

Revision 1.100: download - view: text, markup, annotated - select for diffs
Sat Jul 20 19:59:31 2013 UTC (11 years, 7 months ago) by dholland
Branches: MAIN
CVS tags: riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1
Diff to: previous 1.99: preferred, colored
Changes since revision 1.99: +4 -1 lines
Collect the pieces of lfs rename into lfs_rename.c, and sprinkle static.

Revision 1.98.2.1: download - view: text, markup, annotated - select for diffs
Sun Jun 23 06:18:39 2013 UTC (11 years, 7 months ago) by tls
Branches: tls-maxphys
Diff to: previous 1.98: preferred, colored
Changes since revision 1.98: +5 -5 lines
resync from head

Revision 1.99: download - view: text, markup, annotated - select for diffs
Thu Jun 6 00:48:04 2013 UTC (11 years, 8 months ago) by dholland
Branches: MAIN
CVS tags: riastradh-drm2-base
Branch point for: rmind-smpnet, riastradh-drm2
Diff to: previous 1.98: preferred, colored
Changes since revision 1.98: +5 -5 lines
Split lfs from ufs step 4:

Massedit all ufs symbols to be "ulfs" instead, to make sure there are
no conflicts with ufs. Confirmed with grep.

(This required changing a few comments that maybe should have been
left alone to say "ulfs", but we'll survive that.)

Revision 1.96.30.1: download - view: text, markup, annotated - select for diffs
Tue Apr 17 00:08:56 2012 UTC (12 years, 10 months ago) by yamt
Branches: yamt-pagecache
CVS tags: yamt-pagecache-tag8
Diff to: previous 1.96: preferred, colored
Changes since revision 1.96: +5 -4 lines
sync with head

Revision 1.96.34.2: download - view: text, markup, annotated - select for diffs
Fri Feb 24 09:11:51 2012 UTC (12 years, 11 months ago) by mrg
Branches: jmcneill-usbmp
Diff to: previous 1.96.34.1: preferred, colored; branchpoint 1.96: preferred, colored; next MAIN 1.97: preferred, colored
Changes since revision 1.96.34.1: +3 -2 lines
sync to -current.

Revision 1.98: download - view: text, markup, annotated - select for diffs
Thu Feb 23 22:33:33 2012 UTC (12 years, 11 months ago) by joerg
Branches: MAIN
CVS tags: yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, khorben-n900, jmcneill-usbmp-base9, jmcneill-usbmp-base8, jmcneill-usbmp-base7, jmcneill-usbmp-base6, jmcneill-usbmp-base5, jmcneill-usbmp-base4, jmcneill-usbmp-base3, jmcneill-usbmp-base10, agc-symver-base, agc-symver
Branch point for: tls-maxphys
Diff to: previous 1.97: preferred, colored
Changes since revision 1.97: +3 -2 lines
Make sure that __BEGIN_DECLS and __END_DECLS are paired.

Revision 1.96.34.1: download - view: text, markup, annotated - select for diffs
Sat Feb 18 07:35:54 2012 UTC (13 years ago) by mrg
Branches: jmcneill-usbmp
Diff to: previous 1.96: preferred, colored
Changes since revision 1.96: +3 -3 lines
merge to -current.

Revision 1.97: download - view: text, markup, annotated - select for diffs
Mon Jan 2 22:10:44 2012 UTC (13 years, 1 month ago) by perseant
Branches: MAIN
CVS tags: netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, jmcneill-usbmp-base2
Diff to: previous 1.96: preferred, colored
Changes since revision 1.96: +3 -3 lines

* Remove PGO_RECLAIM during lfs_putpages()' call to genfs_putpages(),
  to avoid a live lock in the latter when reclaiming a vnode with
  dirty pages.

* Add a new segment flag, SEGM_RECLAIM, to note when a segment is
  being written for vnode reclamation, and record which inode is being
  reclaimed, to aid in forensic debugging.

* Add a new segment flag, SEGM_SINGLE, so that opportunistic writes
  can write a single segment's worth of blocks and then stop, rather
  than writing all the way up to the cleaner's reserved number of
  segments.

* Add assert statements to check mutex ownership is the way it ought
  to be, mostly in lfs_putpages; fix problems uncovered by this.

* Don't clear VU_DIROP until the inode actually makes its way to disk,
  avoiding a problem where dirop inodes could become separated
  (uncovered by a modified version of the "ckckp" forensic regression
  test).

* Move the vfs_getopsbyname() call into lfs_writerd.  Prepare code to
  make lfs_writerd notice when there are no more LFSs, and exit losing
  the reference, so that, in theory, the module can be unloaded.  This
  code is not enabled, since it causes a crash on exit.

* Set IN_MODIFIED on inodes flushed by lfs_flush_dirops.  Really we
  only need to set IN_MODIFIED if we are going to write them again
  (e.g., to write pages); need to think about this more.

Finally, several changes to help avoid "no clean segments" panics:

* In lfs_bmapv, note when a vnode is loaded only to discover whether
  its blocks are live, so it can immediately be recycled.  Since the
  cleaner will try to choose ~empty segments over full ones, this
  prevents the cleaner from (1) filling the vnode cache with junk, and
  (2) squeezing any unwritten writes to disk and running the fs out of
  segments.

* Overestimate by half the amount of metadata that will be required
  to fill the clean segments.  This will make the disk appear smaller,
  but should help avoid a "no clean segments" panic.

* Rearrange lfs_writerd.  In particular, lfs_writerd now pays
  attention to the number of clean segments available, and holds off
  writing until there is room.

Revision 1.94.10.2: download - view: text, markup, annotated - select for diffs
Mon May 4 08:14:38 2009 UTC (15 years, 9 months ago) by yamt
Branches: yamt-nfs-mp
Diff to: previous 1.94.10.1: preferred, colored; branchpoint 1.94: preferred, colored; next MAIN 1.95: preferred, colored
Changes since revision 1.94.10.1: +1 -5 lines
sync with head.

Revision 1.95.2.1: download - view: text, markup, annotated - select for diffs
Thu Sep 18 04:37:06 2008 UTC (16 years, 5 months ago) by wrstuden
Branches: wrstuden-revivesa
Diff to: previous 1.95: preferred, colored; next MAIN 1.96: preferred, colored
Changes since revision 1.95: +1 -5 lines
Sync with wrstuden-revivesa-base-2.

Revision 1.95.4.1: download - view: text, markup, annotated - select for diffs
Thu Jul 3 18:38:25 2008 UTC (16 years, 7 months ago) by simonb
Branches: simonb-wapbl
Diff to: previous 1.95: preferred, colored; next MAIN 1.96: preferred, colored
Changes since revision 1.95: +1 -5 lines
Sync with head.

Revision 1.94.6.2: download - view: text, markup, annotated - select for diffs
Sun Jun 29 09:33:21 2008 UTC (16 years, 7 months ago) by mjf
Branches: mjf-devfs2
Diff to: previous 1.94.6.1: preferred, colored; branchpoint 1.94: preferred, colored; next MAIN 1.95: preferred, colored
Changes since revision 1.94.6.1: +0 -4 lines
Sync with HEAD.

Revision 1.96: download - view: text, markup, annotated - select for diffs
Sat Jun 28 01:34:05 2008 UTC (16 years, 7 months ago) by rumble
Branches: MAIN
CVS tags: yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, yamt-nfs-mp-base9, yamt-nfs-mp-base8, yamt-nfs-mp-base7, yamt-nfs-mp-base6, yamt-nfs-mp-base5, yamt-nfs-mp-base4, yamt-nfs-mp-base3, yamt-nfs-mp-base11, yamt-nfs-mp-base10, wrstuden-revivesa-base-4, wrstuden-revivesa-base-3, wrstuden-revivesa-base-2, uebayasi-xip-base4, uebayasi-xip-base3, uebayasi-xip-base2, uebayasi-xip-base1, uebayasi-xip-base, uebayasi-xip, simonb-wapbl-nbase, simonb-wapbl-base, rmind-uvmplock-nbase, rmind-uvmplock-base, rmind-uvmplock, nick-hppapmap-base4, nick-hppapmap-base3, nick-hppapmap-base2, nick-hppapmap-base, nick-hppapmap, netbsd-5-base, netbsd-5-2-RELEASE, netbsd-5-2-RC1, netbsd-5-2-3-RELEASE, netbsd-5-2-2-RELEASE, netbsd-5-2-1-RELEASE, netbsd-5-2, netbsd-5-1-RELEASE, netbsd-5-1-RC4, netbsd-5-1-RC3, netbsd-5-1-RC2, netbsd-5-1-RC1, netbsd-5-1-5-RELEASE, netbsd-5-1-4-RELEASE, netbsd-5-1-3-RELEASE, netbsd-5-1-2-RELEASE, netbsd-5-1-1-RELEASE, netbsd-5-1, netbsd-5-0-RELEASE, netbsd-5-0-RC4, netbsd-5-0-RC3, netbsd-5-0-RC2, netbsd-5-0-RC1, netbsd-5-0-2-RELEASE, netbsd-5-0-1-RELEASE, netbsd-5-0, netbsd-5, mjf-devfs2-base, matt-premerge-20091211, matt-nb5-pq3-base, matt-nb5-pq3, matt-nb5-mips64-u2-k2-k4-k7-k8-k9, matt-nb5-mips64-u1-k1-k5, matt-nb5-mips64-premerge-20101231, matt-nb5-mips64-premerge-20091211, matt-nb5-mips64-k15, matt-nb5-mips64, matt-nb4-mips64-k7-u2a-k9b, matt-mips64-premerge-20101231, matt-mips64-base2, jymxensuspend-base, jym-xensuspend-nbase, jym-xensuspend-base, jym-xensuspend, jruoho-x86intr-base, jruoho-x86intr, jmcneill-usbmp-pre-base2, jmcneill-usbmp-base, jmcneill-audiomp3-base, jmcneill-audiomp3, haad-nbase2, haad-dm-base2, haad-dm-base1, haad-dm-base, haad-dm, cherry-xenmp-base, cherry-xenmp, bouyer-quota2-nbase, bouyer-quota2-base, bouyer-quota2, ad-audiomp2-base, ad-audiomp2
Branch point for: yamt-pagecache, jmcneill-usbmp
Diff to: previous 1.95: preferred, colored
Changes since revision 1.95: +1 -5 lines
Create sysctl entries during module initialisation and destroy them
appropriately.

Many of these file systems are now ready for modularisation.

Revision 1.94.6.1: download - view: text, markup, annotated - select for diffs
Mon Jun 2 13:24:36 2008 UTC (16 years, 8 months ago) by mjf
Branches: mjf-devfs2
Diff to: previous 1.94: preferred, colored
Changes since revision 1.94: +1 -8 lines
Sync with HEAD.

Revision 1.94.8.1: download - view: text, markup, annotated - select for diffs
Sun May 18 12:35:55 2008 UTC (16 years, 9 months ago) by yamt
Branches: yamt-pf42
Diff to: previous 1.94: preferred, colored; next MAIN 1.95: preferred, colored
Changes since revision 1.94: +1 -8 lines
sync with head.

Revision 1.94.10.1: download - view: text, markup, annotated - select for diffs
Fri May 16 02:26:00 2008 UTC (16 years, 9 months ago) by yamt
Branches: yamt-nfs-mp
Diff to: previous 1.94: preferred, colored
Changes since revision 1.94: +1 -8 lines
sync with head.

Revision 1.95: download - view: text, markup, annotated - select for diffs
Mon Apr 28 20:24:11 2008 UTC (16 years, 9 months ago) by martin
Branches: MAIN
CVS tags: yamt-pf42-base4, yamt-pf42-base3, yamt-pf42-base2, yamt-nfs-mp-base2, wrstuden-revivesa-base-1, wrstuden-revivesa-base, hpcarm-cleanup-nbase
Branch point for: wrstuden-revivesa, simonb-wapbl
Diff to: previous 1.94: preferred, colored
Changes since revision 1.94: +1 -8 lines
Remove clause 3 and 4 from TNF licenses

Revision 1.91.10.3: download - view: text, markup, annotated - select for diffs
Mon Feb 18 21:07:28 2008 UTC (17 years ago) by mjf
Branches: mjf-devfs
Diff to: previous 1.91.10.2: preferred, colored; branchpoint 1.91: preferred, colored; next MAIN 1.92: preferred, colored
Changes since revision 1.91.10.2: +5 -3 lines
Sync with HEAD.

Revision 1.69.2.5: download - view: text, markup, annotated - select for diffs
Mon Jan 21 09:48:11 2008 UTC (17 years, 1 month ago) by yamt
Branches: yamt-lazymbuf
Diff to: previous 1.69.2.4: preferred, colored; next MAIN 1.70: preferred, colored
Changes since revision 1.69.2.4: +6 -4 lines
sync with head

Revision 1.91.4.1: download - view: text, markup, annotated - select for diffs
Wed Jan 9 01:58:30 2008 UTC (17 years, 1 month ago) by matt
Branches: matt-armv6
Diff to: previous 1.91: preferred, colored; next MAIN 1.92: preferred, colored
Changes since revision 1.91: +10 -9 lines
sync with HEAD

Revision 1.93.4.1: download - view: text, markup, annotated - select for diffs
Wed Jan 2 21:58:24 2008 UTC (17 years, 1 month ago) by bouyer
Branches: bouyer-xeni386
CVS tags: bouyer-xeni386-merge1
Diff to: previous 1.93: preferred, colored; next MAIN 1.94: preferred, colored
Changes since revision 1.93: +5 -3 lines
Sync with HEAD

Revision 1.94: download - view: text, markup, annotated - select for diffs
Wed Jan 2 11:49:11 2008 UTC (17 years, 1 month ago) by ad
Branches: MAIN
CVS tags: yamt-pf42-baseX, yamt-pf42-base, yamt-nfs-mp-base, yamt-lazymbuf-base15, yamt-lazymbuf-base14, nick-net80211-sync-base, nick-net80211-sync, mjf-devfs-base, matt-armv6-nbase, matt-armv6-base, keiichi-mipv6-nbase, keiichi-mipv6-base, keiichi-mipv6, hpcarm-cleanup-base, bouyer-xeni386-nbase, bouyer-xeni386-base, ad-socklock-base1
Branch point for: yamt-pf42, yamt-nfs-mp, mjf-devfs2
Diff to: previous 1.93: preferred, colored
Changes since revision 1.93: +5 -3 lines
Merge vmlocking2 to head.

Revision 1.91.10.2: download - view: text, markup, annotated - select for diffs
Thu Dec 27 00:46:50 2007 UTC (17 years, 1 month ago) by mjf
Branches: mjf-devfs
Diff to: previous 1.91.10.1: preferred, colored; branchpoint 1.91: preferred, colored
Changes since revision 1.91.10.1: +2 -2 lines
Sync with HEAD.

Revision 1.92.2.4: download - view: text, markup, annotated - select for diffs
Wed Dec 26 21:40:01 2007 UTC (17 years, 1 month ago) by ad
Branches: vmlocking2
Diff to: previous 1.92.2.3: preferred, colored; branchpoint 1.92: preferred, colored; next MAIN 1.93: preferred, colored
Changes since revision 1.92.2.3: +2 -2 lines
Sync with head.

Revision 1.92.2.3: download - view: text, markup, annotated - select for diffs
Wed Dec 19 21:27:15 2007 UTC (17 years, 2 months ago) by ad
Branches: vmlocking2
Diff to: previous 1.92.2.2: preferred, colored; branchpoint 1.92: preferred, colored
Changes since revision 1.92.2.2: +2 -2 lines
Use a global lfs_lock.

Revision 1.92.2.2: download - view: text, markup, annotated - select for diffs
Wed Dec 19 00:02:00 2007 UTC (17 years, 2 months ago) by ad
Branches: vmlocking2
Diff to: previous 1.92.2.1: preferred, colored; branchpoint 1.92: preferred, colored
Changes since revision 1.92.2.1: +2 -2 lines
Get lfs mostly working.

Revision 1.91.2.2: download - view: text, markup, annotated - select for diffs
Sun Dec 9 19:38:53 2007 UTC (17 years, 2 months ago) by jmcneill
Branches: jmcneill-pm
Diff to: previous 1.91.2.1: preferred, colored; branchpoint 1.91: preferred, colored; next MAIN 1.92: preferred, colored
Changes since revision 1.91.2.1: +2 -2 lines
Sync with HEAD.

Revision 1.93: download - view: text, markup, annotated - select for diffs
Sat Dec 8 19:29:55 2007 UTC (17 years, 2 months ago) by pooka
Branches: MAIN
CVS tags: yamt-kmem-base3, yamt-kmem-base2, yamt-kmem-base, yamt-kmem, vmlocking2-base3, jmcneill-pm-base, cube-autoconf-base, cube-autoconf
Branch point for: bouyer-xeni386
Diff to: previous 1.92: preferred, colored
Changes since revision 1.92: +2 -2 lines
Remove cn_lwp from struct componentname.  curlwp should be used
from on.  The NDINIT() macro no longer takes the lwp parameter and
associates the credentials of the calling thread with the namei
structure.

Revision 1.91.10.1: download - view: text, markup, annotated - select for diffs
Sat Dec 8 18:21:40 2007 UTC (17 years, 2 months ago) by mjf
Branches: mjf-devfs
Diff to: previous 1.91: preferred, colored
Changes since revision 1.91: +5 -6 lines
Sync with HEAD.

Revision 1.69.2.4: download - view: text, markup, annotated - select for diffs
Fri Dec 7 17:35:21 2007 UTC (17 years, 2 months ago) by yamt
Branches: yamt-lazymbuf
Diff to: previous 1.69.2.3: preferred, colored
Changes since revision 1.69.2.3: +5 -6 lines
sync with head

Revision 1.92.2.1: download - view: text, markup, annotated - select for diffs
Tue Dec 4 13:03:50 2007 UTC (17 years, 2 months ago) by ad
Branches: vmlocking2
Diff to: previous 1.92: preferred, colored
Changes since revision 1.92: +4 -2 lines
Pull the vmlocking changes into a new branch.

Revision 1.91.2.1: download - view: text, markup, annotated - select for diffs
Tue Nov 27 19:39:25 2007 UTC (17 years, 2 months ago) by joerg
Branches: jmcneill-pm
Diff to: previous 1.91: preferred, colored
Changes since revision 1.91: +5 -6 lines
Sync with HEAD. amd64 Xen support needs testing.

Revision 1.92: download - view: text, markup, annotated - select for diffs
Mon Nov 26 19:02:31 2007 UTC (17 years, 2 months ago) by pooka
Branches: MAIN
CVS tags: vmlocking2-base2, vmlocking2-base1, vmlocking-nbase, reinoud-bufcleanup-nbase, reinoud-bufcleanup-base
Branch point for: vmlocking2
Diff to: previous 1.91: preferred, colored
Changes since revision 1.91: +5 -6 lines
Remove the "struct lwp *" argument from all VFS and VOP interfaces.
The general trend is to remove it from all kernel interfaces and
this is a start.  In case the calling lwp is desired, curlwp should
be used.

quick consensus on tech-kern

Revision 1.69.2.3: download - view: text, markup, annotated - select for diffs
Mon Sep 3 14:46:53 2007 UTC (17 years, 5 months ago) by yamt
Branches: yamt-lazymbuf
Diff to: previous 1.69.2.2: preferred, colored
Changes since revision 1.69.2.2: +6 -4 lines
sync with head.

Revision 1.87.12.1: download - view: text, markup, annotated - select for diffs
Mon Sep 3 07:05:19 2007 UTC (17 years, 5 months ago) by wrstuden
Branches: wrstuden-fixsa
Diff to: previous 1.87: preferred, colored; next MAIN 1.88: preferred, colored
Changes since revision 1.87: +3 -2 lines
Sync w/ NetBSD-4-RC_1

Revision 1.88.2.4: download - view: text, markup, annotated - select for diffs
Mon Aug 20 21:28:26 2007 UTC (17 years, 6 months ago) by ad
Branches: vmlocking
Diff to: previous 1.88.2.3: preferred, colored; branchpoint 1.88: preferred, colored; next MAIN 1.89: preferred, colored
Changes since revision 1.88.2.3: +2 -2 lines
Sync with HEAD.

Revision 1.90.2.1: download - view: text, markup, annotated - select for diffs
Wed Aug 15 13:51:14 2007 UTC (17 years, 6 months ago) by skrll
Branches: nick-csl-alignment
Diff to: previous 1.90: preferred, colored; next MAIN 1.91: preferred, colored
Changes since revision 1.90: +2 -2 lines
Sync with HEAD.

Revision 1.91.12.2: download - view: text, markup, annotated - select for diffs
Tue Jul 31 21:14:21 2007 UTC (17 years, 6 months ago) by pooka
Branches: matt-mips64
Diff to: previous 1.91.12.1: preferred, colored; branchpoint 1.91: preferred, colored; next MAIN 1.92: preferred, colored
Changes since revision 1.91.12.1: +297 -0 lines
* nuke the nameidata parameter from VFS_MOUNT().  Nobody on tech-kern
  knew what it was supposed to be used for and wrstuden gave a go-ahead
* while rototilling, convert file systems which went easily to
  use VFS_PROTOS() instead of manually prototyping the methods

Revision 1.91.12.1
Tue Jul 31 21:14:20 2007 UTC (17 years, 6 months ago) by pooka
Branches: matt-mips64
FILE REMOVED
Changes since revision 1.91: +0 -297 lines
file lfs_extern.h was added on branch matt-mips64 on 2007-07-31 21:14:21 +0000

Revision 1.91: download - view: text, markup, annotated - select for diffs
Tue Jul 31 21:14:20 2007 UTC (17 years, 6 months ago) by pooka
Branches: MAIN
CVS tags: yamt-x86pmap-base4, yamt-x86pmap-base3, yamt-x86pmap-base2, yamt-x86pmap-base, yamt-x86pmap, vmlocking-base, nick-csl-alignment-base5, matt-mips64-base, matt-armv6-prevmlocking, jmcneill-base, bouyer-xenamd64-base2, bouyer-xenamd64-base, bouyer-xenamd64
Branch point for: mjf-devfs, matt-mips64, matt-armv6, jmcneill-pm
Diff to: previous 1.90: preferred, colored
Changes since revision 1.90: +2 -2 lines
* nuke the nameidata parameter from VFS_MOUNT().  Nobody on tech-kern
  knew what it was supposed to be used for and wrstuden gave a go-ahead
* while rototilling, convert file systems which went easily to
  use VFS_PROTOS() instead of manually prototyping the methods

Revision 1.88.2.3: download - view: text, markup, annotated - select for diffs
Sun Jul 15 13:28:17 2007 UTC (17 years, 7 months ago) by ad
Branches: vmlocking
Diff to: previous 1.88.2.2: preferred, colored; branchpoint 1.88: preferred, colored
Changes since revision 1.88.2.2: +3 -2 lines
Sync with head.

Revision 1.90: download - view: text, markup, annotated - select for diffs
Thu Jul 12 19:35:36 2007 UTC (17 years, 7 months ago) by dsl
Branches: MAIN
CVS tags: nick-csl-alignment-base, hpcarm-cleanup
Branch point for: nick-csl-alignment
Diff to: previous 1.89: preferred, colored
Changes since revision 1.89: +3 -2 lines
Change the VFS_MOUNT() interface so that the 'data' buffer passed to the
fs code is a kernel buffer, pass though the length of the buffer as well.
Since the length of the userspace buffer isn'it (yet) passed through the mount
system call, add a field to the vfsops structure containing the default length.
Split sys_mount() for calls from compat code.
Ride one of the recent kernel version changes - old fs LKMs will load, but
sys_mount() will reject any attempt to use them.

Revision 1.88.4.1: download - view: text, markup, annotated - select for diffs
Wed Jul 11 20:12:45 2007 UTC (17 years, 7 months ago) by mjf
Branches: mjf-ufs-trans
Diff to: previous 1.88: preferred, colored; next MAIN 1.89: preferred, colored
Changes since revision 1.88: +3 -2 lines
Sync with head.

Revision 1.88.2.2: download - view: text, markup, annotated - select for diffs
Fri Jun 8 14:18:17 2007 UTC (17 years, 8 months ago) by ad
Branches: vmlocking
Diff to: previous 1.88.2.1: preferred, colored; branchpoint 1.88: preferred, colored
Changes since revision 1.88.2.1: +3 -2 lines
Sync with head.

Revision 1.87.6.1: download - view: text, markup, annotated - select for diffs
Tue Jun 5 20:35:00 2007 UTC (17 years, 8 months ago) by bouyer
Branches: netbsd-4
CVS tags: wrstuden-fixsa-newbase, wrstuden-fixsa-base-1, wrstuden-fixsa-base, netbsd-4-0-RELEASE, netbsd-4-0-RC5, netbsd-4-0-RC4, netbsd-4-0-RC3, netbsd-4-0-RC2, netbsd-4-0-RC1, netbsd-4-0-1-RELEASE, netbsd-4-0, matt-nb4-arm-base, matt-nb4-arm
Diff to: previous 1.87: preferred, colored; next MAIN 1.88: preferred, colored
Changes since revision 1.87: +3 -2 lines
Pull up following revision(s) (requested by perseant in ticket #703):
	sys/miscfs/genfs/genfs.h              1.21
	sys/miscfs/genfs/genfs_vnops.c        1.151
	sys/ufs/lfs/lfs.h                     1.119, 1.120
	sys/ufs/lfs/lfs_bio.c                 1.99-101
	sys/ufs/lfs/lfs_extern.h              1.89
	sys/ufs/lfs/lfs_inode.c               1.108, 1.109
	sys/ufs/lfs/lfs_segment.c             1.197, 1.199, 1.200
	sys/ufs/lfs/lfs_subr.c                1.69, 1.70
	sys/ufs/lfs/lfs_syscalls.c            1.119
	sys/ufs/lfs/lfs_vfsops.c              1.234, 1.235
	sys/ufs/lfs/lfs_vnops.c               1.195, 1.196, 1.200, 1.202-206

Reduce busy waiting in lfs_putpages(), and other LFS improvements.

Revision 1.87.8.2: download - view: text, markup, annotated - select for diffs
Mon May 7 10:56:16 2007 UTC (17 years, 9 months ago) by yamt
Branches: yamt-idlelwp
Diff to: previous 1.87.8.1: preferred, colored; branchpoint 1.87: preferred, colored; next MAIN 1.88: preferred, colored
Changes since revision 1.87.8.1: +3 -2 lines
sync with head.

Revision 1.89: download - view: text, markup, annotated - select for diffs
Tue Apr 17 01:16:46 2007 UTC (17 years, 10 months ago) by perseant
Branches: MAIN
CVS tags: yamt-idlelwp-base8, mjf-ufs-trans-base
Diff to: previous 1.88: preferred, colored
Changes since revision 1.88: +3 -2 lines
Install a new sysctl, vfs.lfs.ignore_lazy_sync, which causes LFS to ignore
the "smooth" syncer, as if vfs.sync.*delay = 0, but only for LFS.  The
default is "on", i.e., ignore lazy sync.

Reduce the amount of polling/busy-waiting done by lfs_putpages().  To
accomplish this, copied genfs_putpages() and modified it to indicate which
page it was that caused it to return with EDEADLK.  fsync()/fdatasync()
should no longer ever fail with EAGAIN, and should not consume huge
quantities of cpu.

Also, try to make dirops less likely to be written as the result of a
VOP_PUTPAGES(), while ensuring that they are written regularly.

Revision 1.88.2.1: download - view: text, markup, annotated - select for diffs
Tue Mar 13 17:51:23 2007 UTC (17 years, 11 months ago) by ad
Branches: vmlocking
Diff to: previous 1.88: preferred, colored
Changes since revision 1.88: +4 -2 lines
Pull in the initial set of changes for the vmlocking branch.

Revision 1.87.8.1: download - view: text, markup, annotated - select for diffs
Mon Mar 12 06:01:08 2007 UTC (17 years, 11 months ago) by rmind
Branches: yamt-idlelwp
Diff to: previous 1.87: preferred, colored
Changes since revision 1.87: +2 -2 lines
Sync with HEAD.

Revision 1.88: download - view: text, markup, annotated - select for diffs
Sun Mar 4 06:03:45 2007 UTC (17 years, 11 months ago) by christos
Branches: MAIN
CVS tags: thorpej-atomic-base, thorpej-atomic, reinoud-bufcleanup
Branch point for: vmlocking, mjf-ufs-trans
Diff to: previous 1.87: preferred, colored
Changes since revision 1.87: +2 -2 lines
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

Revision 1.69.2.2: download - view: text, markup, annotated - select for diffs
Sat Dec 30 20:51:01 2006 UTC (18 years, 1 month ago) by yamt
Branches: yamt-lazymbuf
Diff to: previous 1.69.2.1: preferred, colored
Changes since revision 1.69.2.1: +10 -3 lines
sync with head.

Revision 1.75.2.1: download - view: text, markup, annotated - select for diffs
Sat Sep 9 03:00:00 2006 UTC (18 years, 5 months ago) by rpaulo
Branches: rpaulo-netinet-merge-pcb
Diff to: previous 1.75: preferred, colored; next MAIN 1.76: preferred, colored
Changes since revision 1.75: +36 -26 lines
sync with head

Revision 1.75.6.5: download - view: text, markup, annotated - select for diffs
Sun Sep 3 15:26:07 2006 UTC (18 years, 5 months ago) by yamt
Branches: yamt-pdpolicy
Diff to: previous 1.75.6.4: preferred, colored; branchpoint 1.75: preferred, colored; next MAIN 1.76: preferred, colored
Changes since revision 1.75.6.4: +2 -1 lines
sync with head.

Revision 1.87: download - view: text, markup, annotated - select for diffs
Fri Sep 1 19:41:28 2006 UTC (18 years, 5 months ago) by perseant
Branches: MAIN
CVS tags: yamt-splraiseipl-base5, yamt-splraiseipl-base4, yamt-splraiseipl-base3, yamt-splraiseipl-base2, yamt-splraiseipl-base, yamt-splraiseipl, yamt-pdpolicy-base9, yamt-pdpolicy-base8, rpaulo-netinet-merge-pcb-base, post-newlock2-merge, newlock2-nbase, newlock2-base, newlock2, netbsd-4-base, ad-audiomp-base, ad-audiomp
Branch point for: yamt-idlelwp, wrstuden-fixsa, netbsd-4
Diff to: previous 1.86: preferred, colored
Changes since revision 1.86: +2 -1 lines
Changes to help the roll-forward agent, to wit:

* Mark being-deleted files in the Ifile so we can finish deleting them
  at fs mount time.
* Flag the Ifile with "cleaner must clean" when writers are waiting for
  the cleaner, rather than relying solely on the cleaner's estimation of
  whether it should clean or not.
* Note partial segments written by a user agent (in particular,
  fsck_lfs) so that repeated rolls forward don't interfere with one
  another.
* Add a new fcntl, LFCNPASS, that allows the log to wrap exactly once,
  for better testing of the validity of checkpoints.
* Keep track of the on-disk nlink count when cleaning, so that we don't
  partially complete directory operations while cleaning.
* Ensure that every single Ifile inode write represents a consistent
  view of the filesystem.  In particular, the accounting for the segment
  we are writing the inode into must be correct, and the accounting for
  the segment that inode used to reside in must be correct.  Rather than
  just rewriting the inode if we wrote it wrong, rewrite the necessary
  ifile blocks before writing the inode so we never write it wrong.
* Don't unmark any VDIROP vnodes if we haven't written them to disk,
  avoiding yet another problem with the "wait for the cleaner" error
  return from lfs_putpages().

Also, move the last callback to an aiodone call, so we no longer do any
memory management from interrupt context.

Revision 1.75.6.4: download - view: text, markup, annotated - select for diffs
Fri Aug 11 15:47:37 2006 UTC (18 years, 6 months ago) by yamt
Branches: yamt-pdpolicy
Diff to: previous 1.75.6.3: preferred, colored; branchpoint 1.75: preferred, colored
Changes since revision 1.75.6.3: +9 -3 lines
sync with head

Revision 1.64.2.9: download - view: text, markup, annotated - select for diffs
Thu Aug 10 12:16:46 2006 UTC (18 years, 6 months ago) by tron
Branches: netbsd-3
CVS tags: netbsd-3-1-RELEASE, netbsd-3-1-RC4, netbsd-3-1-RC3, netbsd-3-1-RC2, netbsd-3-1-RC1, netbsd-3-1-1-RELEASE, netbsd-3-1
Diff to: previous 1.64.2.8: preferred, colored; branchpoint 1.64: preferred, colored; next MAIN 1.65: preferred, colored
Changes since revision 1.64.2.8: +4 -1 lines
Apply patch (requested by fair in perseant #1457):
Bring LFS up to current, including a patch (1.95 lfs_alloc.c) that
should prevent the inode free list errors seen on the STABLE branch
subsequent to pullup ticket #1327.

Revision 1.86: download - view: text, markup, annotated - select for diffs
Thu Jul 20 23:49:07 2006 UTC (18 years, 7 months ago) by perseant
Branches: MAIN
CVS tags: yamt-pdpolicy-base7, abandoned-netbsd-4-base, abandoned-netbsd-4
Diff to: previous 1.85: preferred, colored
Changes since revision 1.85: +7 -2 lines
Separate the (non-working) LFS kernel roll-forward code into its own file,
lfs_rfw.c.

Revision 1.83.4.1: download - view: text, markup, annotated - select for diffs
Thu Jul 13 17:50:13 2006 UTC (18 years, 7 months ago) by gdamore
Branches: gdamore-uart
Diff to: previous 1.83: preferred, colored; next MAIN 1.84: preferred, colored
Changes since revision 1.83: +3 -2 lines
Merge from HEAD.

Revision 1.85: download - view: text, markup, annotated - select for diffs
Thu Jul 13 12:00:26 2006 UTC (18 years, 7 months ago) by martin
Branches: MAIN
Diff to: previous 1.84: preferred, colored
Changes since revision 1.84: +2 -2 lines
Fix alignement problems for fhandle_t, exposed by gcc4.1.

While touching all vptofh/fhtovp functions, get rid of VFS_MAXFIDSIZ,
version the getfh(2) syscall and explicitly pass the size available in
the filehandle from userland.

Discussed on tech-kern, with lots of help from yamt (thanks!).

Revision 1.84: download - view: text, markup, annotated - select for diffs
Thu Jun 29 19:28:21 2006 UTC (18 years, 7 months ago) by perseant
Branches: MAIN
Diff to: previous 1.83: preferred, colored
Changes since revision 1.83: +2 -1 lines
Don't wake up the cleaner if the filesystem is unwrappable, and fix the
compatibility fcntls.

Also includes one-line fixes for an MP locking bug and a zero-length FINFO
problem that manifested during testing.

Revision 1.69.2.1: download - view: text, markup, annotated - select for diffs
Wed Jun 21 15:12:39 2006 UTC (18 years, 8 months ago) by yamt
Branches: yamt-lazymbuf
Diff to: previous 1.69: preferred, colored
Changes since revision 1.69: +34 -34 lines
sync with head.

Revision 1.75.4.2: download - view: text, markup, annotated - select for diffs
Thu Jun 1 22:39:43 2006 UTC (18 years, 8 months ago) by kardel
Branches: simonb-timecounters
CVS tags: simonb-timcounters-final
Diff to: previous 1.75.4.1: preferred, colored; branchpoint 1.75: preferred, colored; next MAIN 1.76: preferred, colored
Changes since revision 1.75.4.1: +23 -23 lines
Sync with head.

Revision 1.75.10.2: download - view: text, markup, annotated - select for diffs
Wed May 24 15:50:48 2006 UTC (18 years, 9 months ago) by tron
Branches: peter-altq
Diff to: previous 1.75.10.1: preferred, colored; branchpoint 1.75: preferred, colored; next MAIN 1.76: preferred, colored
Changes since revision 1.75.10.1: +25 -23 lines
Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.

Revision 1.75.6.3: download - view: text, markup, annotated - select for diffs
Wed May 24 10:59:25 2006 UTC (18 years, 9 months ago) by yamt
Branches: yamt-pdpolicy
Diff to: previous 1.75.6.2: preferred, colored; branchpoint 1.75: preferred, colored
Changes since revision 1.75.6.2: +23 -23 lines
sync with head.

Revision 1.64.2.8: download - view: text, markup, annotated - select for diffs
Sat May 20 22:41:31 2006 UTC (18 years, 9 months ago) by riz
Branches: netbsd-3
Diff to: previous 1.64.2.7: preferred, colored; branchpoint 1.64: preferred, colored
Changes since revision 1.64.2.7: +2 -1 lines
Pull up following revision(s) (requested by perseant in ticket #1327):
	sys/ufs/lfs/lfs_vnops.c: revision 1.171
	sys/ufs/lfs/lfs_extern.h: revision 1.81
	sys/ufs/lfs/lfs_segment.c: revision 1.177
Don't ever partially write dirops, even if we need the cleaner to run.
This increases the chances of the "no clean segments" panic slightly,
but allows us to run the ckckp regression test successfully to completion.

Revision 1.64.2.7: download - view: text, markup, annotated - select for diffs
Sat May 20 22:38:57 2006 UTC (18 years, 9 months ago) by riz
Branches: netbsd-3
Diff to: previous 1.64.2.6: preferred, colored; branchpoint 1.64: preferred, colored
Changes since revision 1.64.2.6: +3 -1 lines
Pull up following revision(s) (requested by perseant in ticket #1327):
	sys/ufs/lfs/lfs.h: revision 1.104
	sys/ufs/lfs/lfs_vfsops.c: revision 1.206
	sys/ufs/lfs/lfs_vnops.c: revision 1.170
	sys/ufs/lfs/lfs_extern.h: revision 1.80
	sys/ufs/lfs/lfs_segment.c: revision 1.176
	sys/ufs/lfs/lfs_inode.c: revision 1.103 via patch
	sys/ufs/lfs/lfs_alloc.c: revision 1.90
Postpone the segment accounting changes coming from truncation until the
inode that makes those changes valid is either written to disk by
lfs_writeinode() or discarded by lfs_vfree().
A couple of locking fixes are also included as well.

Revision 1.64.2.6: download - view: text, markup, annotated - select for diffs
Sat May 20 22:10:29 2006 UTC (18 years, 9 months ago) by riz
Branches: netbsd-3
Diff to: previous 1.64.2.5: preferred, colored; branchpoint 1.64: preferred, colored
Changes since revision 1.64.2.5: +2 -1 lines
Pull up following revision(s) (requested by perseant in ticket #1327):
	sys/ufs/lfs/lfs_vfsops.c: revision 1.200
	sys/ufs/lfs/lfs_vnops.c: revision 1.164
	sys/ufs/lfs/lfs_inode.c: revision 1.101
	sys/ufs/lfs/lfs_extern.h: revision 1.78
	sys/ufs/lfs/lfs.h: revision 1.100
Implement a somewhat finer-grained mechanism for paging LFS-backed pages.
The writer daemon, if it does not need to flush the whole filesystem,
now only writes the vnodes for which the pagedaemon has requested pageouts
(although it does not pay attention to the page ranges the pagedaemon
supplies).

Revision 1.64.2.5: download - view: text, markup, annotated - select for diffs
Sat May 20 22:09:28 2006 UTC (18 years, 9 months ago) by riz
Branches: netbsd-3
Diff to: previous 1.64.2.4: preferred, colored; branchpoint 1.64: preferred, colored
Changes since revision 1.64.2.4: +2 -1 lines
Pull up following revision(s) (requested by perseant in ticket #1327):
	sys/ufs/lfs/lfs_alloc.c: revision 1.87
	sys/ufs/lfs/lfs.h: revision 1.99
	sys/ufs/lfs/lfs_vfsops.c: revision 1.199
	sys/ufs/lfs/lfs_extern.h: revision 1.77 via patch
Keep the free list ordered.  This solves a problem first pointed out to me
by Michel Oey, in which an aged LFS writes up to an extra Ifile block for
every file created; and paves the way for the truncation of the Ifile when
many files are deleted.

Revision 1.64.2.4: download - view: text, markup, annotated - select for diffs
Sat May 20 21:59:47 2006 UTC (18 years, 9 months ago) by riz
Branches: netbsd-3
Diff to: previous 1.64.2.3: preferred, colored; branchpoint 1.64: preferred, colored
Changes since revision 1.64.2.3: +3 -2 lines
Pull up following revision(s) (requested by perseant in ticket #1327):
	sys/ufs/lfs/lfs_vnops.c: revision 1.158
	sys/ufs/lfs/lfs_subr.c: revision 1.57
	sys/ufs/lfs/lfs_segment.c: revision 1.171
	sys/ufs/lfs/lfs.h: revision 1.97
	sys/ufs/lfs/lfs_vfsops.c: revision 1.195
	sys/ufs/lfs/lfs_extern.h: revision 1.76
Improvements to LFS's paging mechanism, to wit:
* Acknowledge that sometimes there are more dirty pages to be written to
   disk than clean segments.  When we reach the danger line,
   lfs_gop_write() now returns EAGAIN.  The caller of VOP_PUTPAGES(), if
   it holds the segment lock, drops it and waits for the cleaner to make
   room before continuing.
* Note and avoid a three-way deadlock in lfs_putpages (a writer holding
   a page busy blocks on the cleaner while the cleaner blocks on the
   segment lock while lfs_putpages blocks on the page).

Revision 1.64.2.3: download - view: text, markup, annotated - select for diffs
Sat May 20 21:50:26 2006 UTC (18 years, 9 months ago) by riz
Branches: netbsd-3
Diff to: previous 1.64.2.2: preferred, colored; branchpoint 1.64: preferred, colored
Changes since revision 1.64.2.2: +3 -3 lines
Pull up following revision(s) (requested by perseant in ticket #1327):
	sys/ufs/lfs/lfs_vnops.c: revision 1.152
	sys/ufs/lfs/lfs_debug.c: revision 1.31
	sys/ufs/lfs/lfs_subr.c: revision 1.53
	sys/ufs/lfs/lfs_extern.h: revision 1.68
	sys/ufs/lfs/lfs_inode.c: revision 1.96
	sys/ufs/lfs/lfs_bio.c: revision 1.86
	sys/ufs/lfs/lfs_alloc.c: revision 1.83
	sys/ufs/lfs/lfs_vfsops.c: revision 1.181
	sys/ufs/lfs/lfs.h: revision 1.88
	sys/ufs/lfs/lfs_segment.c: revision 1.164
- sprinkle const
- avoid shadow variables.

Revision 1.83: download - view: text, markup, annotated - select for diffs
Thu May 18 23:15:09 2006 UTC (18 years, 9 months ago) by perseant
Branches: MAIN
CVS tags: yamt-pdpolicy-base6, yamt-pdpolicy-base5, simonb-timecounters-base, gdamore-uart-base, chap-midi-nbase, chap-midi-base, chap-midi
Branch point for: gdamore-uart
Diff to: previous 1.82: preferred, colored
Changes since revision 1.82: +3 -1 lines
Break out the finfo array manipulation code into two new functions,
lfs_acquire_finfo() and lfs_release_finfo().  Add a debugging check
for zero-length finfo arrays in the segment summary to avoid future
regressions.

Revision 1.82: download - view: text, markup, annotated - select for diffs
Sun May 14 21:32:45 2006 UTC (18 years, 9 months ago) by elad
Branches: MAIN
Diff to: previous 1.81: preferred, colored
Changes since revision 1.81: +18 -14 lines
integrate kauth.

Revision 1.75.8.5: download - view: text, markup, annotated - select for diffs
Thu May 11 23:32:03 2006 UTC (18 years, 9 months ago) by elad
Branches: elad-kernelauth
Diff to: previous 1.75.8.4: preferred, colored; branchpoint 1.75: preferred, colored; next MAIN 1.76: preferred, colored
Changes since revision 1.75.8.4: +4 -10 lines
sync with head

Revision 1.75.8.4: download - view: text, markup, annotated - select for diffs
Sat May 6 23:32:58 2006 UTC (18 years, 9 months ago) by christos
Branches: elad-kernelauth
Diff to: previous 1.75.8.3: preferred, colored; branchpoint 1.75: preferred, colored
Changes since revision 1.75.8.3: +1 -2 lines
- Move kauth_cred_t declaration to <sys/types.h>
- Cleanup struct ucred; forward declarations that are unused.
- Don't include <sys/kauth.h> in any header, but include it in the c files
  that need it.

Approved by core.

Revision 1.75.8.3: download - view: text, markup, annotated - select for diffs
Wed May 3 16:01:08 2006 UTC (18 years, 9 months ago) by yamt
Branches: elad-kernelauth
Diff to: previous 1.75.8.2: preferred, colored; branchpoint 1.75: preferred, colored
Changes since revision 1.75.8.2: +13 -8 lines
wrap some decls with #ifdef _KERNEL.  ok'ed by elad@.

Revision 1.81: download - view: text, markup, annotated - select for diffs
Mon May 1 19:47:29 2006 UTC (18 years, 9 months ago) by perseant
Branches: MAIN
CVS tags: elad-kernelauth-base
Diff to: previous 1.80: preferred, colored
Changes since revision 1.80: +2 -1 lines
Don't ever partially write dirops, even if we need the cleaner to run.
This increases the chances of the "no clean segments" panic slightly,
but allows us to run the ckckp regression test successfully to completion.

Revision 1.80: download - view: text, markup, annotated - select for diffs
Sun Apr 30 21:19:42 2006 UTC (18 years, 9 months ago) by perseant
Branches: MAIN
Diff to: previous 1.79: preferred, colored
Changes since revision 1.79: +3 -1 lines
Postpone the segment accounting changes coming from truncation until the
inode that makes those changes valid is either written to disk by
lfs_writeinode() or discarded by lfs_vfree().

A couple of locking fixes are also included as well.

Revision 1.79: download - view: text, markup, annotated - select for diffs
Sun Apr 23 14:15:12 2006 UTC (18 years, 10 months ago) by yamt
Branches: MAIN
Diff to: previous 1.78: preferred, colored
Changes since revision 1.78: +1 -10 lines
remove unused FFS_NAMES and LFS_NAMES.

Revision 1.75.4.1: download - view: text, markup, annotated - select for diffs
Sat Apr 22 11:40:25 2006 UTC (18 years, 10 months ago) by simonb
Branches: simonb-timecounters
Diff to: previous 1.75: preferred, colored
Changes since revision 1.75: +5 -2 lines
Sync with head.

Revision 1.75.8.2: download - view: text, markup, annotated - select for diffs
Wed Apr 19 03:54:09 2006 UTC (18 years, 10 months ago) by elad
Branches: elad-kernelauth
Diff to: previous 1.75.8.1: preferred, colored; branchpoint 1.75: preferred, colored
Changes since revision 1.75.8.1: +5 -2 lines
sync with head.

Revision 1.75.6.2: download - view: text, markup, annotated - select for diffs
Tue Apr 11 11:55:58 2006 UTC (18 years, 10 months ago) by yamt
Branches: yamt-pdpolicy
Diff to: previous 1.75.6.1: preferred, colored; branchpoint 1.75: preferred, colored
Changes since revision 1.75.6.1: +3 -1 lines
sync with head

Revision 1.78: download - view: text, markup, annotated - select for diffs
Sat Apr 8 00:26:34 2006 UTC (18 years, 10 months ago) by perseant
Branches: MAIN
CVS tags: yamt-pdpolicy-base4
Diff to: previous 1.77: preferred, colored
Changes since revision 1.77: +2 -1 lines
Implement a somewhat finer-grained mechanism for paging LFS-backed pages.
The writer daemon, if it does not need to flush the whole filesystem,
now only writes the vnodes for which the pagedaemon has requested pageouts
(although it does not pay attention to the page ranges the pagedaemon
supplies).

Revision 1.77: download - view: text, markup, annotated - select for diffs
Sat Apr 8 00:16:56 2006 UTC (18 years, 10 months ago) by perseant
Branches: MAIN
Diff to: previous 1.76: preferred, colored
Changes since revision 1.76: +2 -1 lines
Keep the free list ordered.  This solves a problem first pointed out to me
by Michel Oey, in which an aged LFS writes up to an extra Ifile block for
every file created; and paves the way for the truncation of the Ifile when
many files are deleted.

Revision 1.75.6.1: download - view: text, markup, annotated - select for diffs
Sat Apr 1 12:07:56 2006 UTC (18 years, 10 months ago) by yamt
Branches: yamt-pdpolicy
Diff to: previous 1.75: preferred, colored
Changes since revision 1.75: +3 -2 lines
sync with head.

Revision 1.75.10.1: download - view: text, markup, annotated - select for diffs
Tue Mar 28 09:42:30 2006 UTC (18 years, 10 months ago) by tron
Branches: peter-altq
Diff to: previous 1.75: preferred, colored
Changes since revision 1.75: +3 -2 lines
Merge 2006-03-28 NetBSD-current into the "peter-altq" branch.

Revision 1.76: download - view: text, markup, annotated - select for diffs
Fri Mar 24 20:05:32 2006 UTC (18 years, 11 months ago) by perseant
Branches: MAIN
CVS tags: yamt-pdpolicy-base3
Diff to: previous 1.75: preferred, colored
Changes since revision 1.75: +3 -2 lines
Improvements to LFS's paging mechanism, to wit:

* Acknowledge that sometimes there are more dirty pages to be written to
  disk than clean segments.  When we reach the danger line,
  lfs_gop_write() now returns EAGAIN.  The caller of VOP_PUTPAGES(), if
  it holds the segment lock, drops it and waits for the cleaner to make
  room before continuing.

* Note and avoid a three-way deadlock in lfs_putpages (a writer holding
  a page busy blocks on the cleaner while the cleaner blocks on the
  segment lock while lfs_putpages blocks on the page).

Revision 1.75.8.1: download - view: text, markup, annotated - select for diffs
Wed Mar 8 01:39:12 2006 UTC (18 years, 11 months ago) by elad
Branches: elad-kernelauth
Diff to: previous 1.75: preferred, colored
Changes since revision 1.75: +6 -6 lines
Adapt to kernel authorization KPI.

Revision 1.73.2.1: download - view: text, markup, annotated - select for diffs
Sun Jan 15 10:03:05 2006 UTC (19 years, 1 month ago) by yamt
Branches: yamt-uio_vmspace
Diff to: previous 1.73: preferred, colored; next MAIN 1.74: preferred, colored
Changes since revision 1.73: +1 -3 lines
sync with head.

Revision 1.75: download - view: text, markup, annotated - select for diffs
Sat Jan 14 17:41:17 2006 UTC (19 years, 1 month ago) by yamt
Branches: MAIN
CVS tags: yamt-uio_vmspace-base5, yamt-pdpolicy-base2, yamt-pdpolicy-base, peter-altq-base
Branch point for: yamt-pdpolicy, simonb-timecounters, rpaulo-netinet-merge-pcb, peter-altq, elad-kernelauth
Diff to: previous 1.74: preferred, colored
Changes since revision 1.74: +0 -1 lines
- unify ffs_blkatoff and lfs_blkatoff.
- remove ufs_ops::uo_blkatoff.
- add directory read-ahead code.  (disabled for now.)

Revision 1.74: download - view: text, markup, annotated - select for diffs
Fri Jan 6 09:27:55 2006 UTC (19 years, 1 month ago) by yamt
Branches: MAIN
Diff to: previous 1.73: preferred, colored
Changes since revision 1.73: +1 -2 lines
remove an obsolete prototype.

Revision 1.73: download - view: text, markup, annotated - select for diffs
Sun Dec 11 12:25:26 2005 UTC (19 years, 2 months ago) by christos
Branches: MAIN
Branch point for: yamt-uio_vmspace
Diff to: previous 1.72: preferred, colored
Changes since revision 1.72: +7 -7 lines
merge ktrace-lwp.

Revision 1.50.2.9: download - view: text, markup, annotated - select for diffs
Thu Nov 10 14:12:32 2005 UTC (19 years, 3 months ago) by skrll
Branches: ktrace-lwp
Diff to: previous 1.50.2.8: preferred, colored; next MAIN 1.51: preferred, colored
Changes since revision 1.50.2.8: +15 -13 lines
Sync with HEAD. Here we go again...

Revision 1.72: download - view: text, markup, annotated - select for diffs
Wed Nov 2 12:39:14 2005 UTC (19 years, 3 months ago) by yamt
Branches: MAIN
CVS tags: yamt-readahead-pervnode, yamt-readahead-perfile, yamt-readahead-base3, yamt-readahead-base2, yamt-readahead-base, yamt-readahead, ktrace-lwp-base
Diff to: previous 1.71: preferred, colored
Changes since revision 1.71: +8 -7 lines
merge yamt-vop branch.  remove following VOPs.

	VOP_BLKATOFF
	VOP_VALLOC
	VOP_BALLOC
	VOP_REALLOCBLKS
	VOP_VFREE
	VOP_TRUNCATE
	VOP_UPDATE

Revision 1.71.2.1: download - view: text, markup, annotated - select for diffs
Thu Oct 20 03:00:30 2005 UTC (19 years, 4 months ago) by yamt
Branches: yamt-vop
Diff to: previous 1.71: preferred, colored; next MAIN 1.72: preferred, colored
Changes since revision 1.71: +8 -7 lines
adapt ufs.

Revision 1.71: download - view: text, markup, annotated - select for diffs
Tue Sep 13 04:13:25 2005 UTC (19 years, 5 months ago) by christos
Branches: MAIN
CVS tags: yamt-vop-base3, yamt-vop-base2, yamt-vop-base, thorpej-vnode-attr-base, thorpej-vnode-attr
Branch point for: yamt-vop
Diff to: previous 1.70: preferred, colored
Changes since revision 1.70: +1 -3 lines
split out lfs_itimes(). It is used in fsck_lfs.

Revision 1.70: download - view: text, markup, annotated - select for diffs
Mon Sep 12 16:24:41 2005 UTC (19 years, 5 months ago) by christos
Branches: MAIN
Diff to: previous 1.69: preferred, colored
Changes since revision 1.69: +3 -3 lines
Use nanotime() to update the time fields in filesystems. Convert the code
from macros to real functions. Original patch and review from chuq.
Note: ext2fs only keeps seconds in the on-disk inode, and msdosfs does not
have enough precision for all fields, so this is not very useful for those
two.

Revision 1.64.2.2: download - view: text, markup, annotated - select for diffs
Wed Aug 24 18:43:37 2005 UTC (19 years, 5 months ago) by riz
Branches: netbsd-3
CVS tags: netbsd-3-0-RELEASE, netbsd-3-0-RC6, netbsd-3-0-RC5, netbsd-3-0-RC4, netbsd-3-0-RC3, netbsd-3-0-RC2, netbsd-3-0-RC1, netbsd-3-0-3-RELEASE, netbsd-3-0-2-RELEASE, netbsd-3-0-1-RELEASE, netbsd-3-0
Diff to: previous 1.64.2.1: preferred, colored; branchpoint 1.64: preferred, colored
Changes since revision 1.64.2.1: +2 -2 lines
Pull up following revision(s) (requested by yamt in ticket #688):
	sys/miscfs/genfs/genfs_vnops.c: revision 1.98 via patch
	sys/ufs/ffs/ffs_vfsops.c: revision 1.165
	sys/ufs/lfs/lfs_extern.h: revision 1.69
	sys/fs/filecorefs/filecore_vfsops.c: revision 1.20
	sys/nfs/nfs_node.c: revision 1.80
	sys/fs/smbfs/smbfs_node.c: revision 1.24
	sys/fs/cd9660/cd9660_vfsops.c: revision 1.24
	sys/fs/msdosfs/msdosfs_denode.c: revision 1.8
	sys/miscfs/genfs/genfs_node.h: revision 1.6
	sys/ufs/lfs/lfs_vfsops.c: revision 1.183
	sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.86
	sys/fs/adosfs/advfsops.c: revision 1.23
	sys/fs/ntfs/ntfs_vfsops.c: revision 1.31
- constify genfs_ops.
- use member designators.

        sys/miscfs/genfs/genfs_vnops.c: revision 1.99 via patch
genfs_getpages: don't forget to put the vnode onto the syncer's work que
ue
even in the case of PGO_LOCKED.

        sys/uvm/uvm_bio.c: revision 1.40
        sys/uvm/uvm_pager.h: revision 1.29
        sys/miscfs/genfs/genfs_vnops.c: revision 1.100 via patch
        sys/ufs/ufs/ufs_inode.c: revision 1.50
- introduce PGO_NOBLOCKALLOC and use it for ubc mapping
  to prevent unnecessary block allocations in the case that
  page size > block size.
- ufs_balloc_range: use VM_PROT_WRITE+PGO_NOBLOCKALLOC rather than
  VM_PROT_READ.

        sys/uvm/uvm_fault.c: revision 1.96
        sys/miscfs/genfs/genfs_vnops.c: revision 1.101 via patch
        sys/uvm/uvm_object.h: revision 1.19
        sys/miscfs/genfs/genfs_node.h: revision 1.7
ensure that vnodes with dirty pages are always on syncer's queue.
- genfs_putpages: wait for i/o completion of PG_RELEASED/PG_PAGEOUT pages by
  setting "wasclean" false when encountering them.
  suggested by Stephan Uphoff in PR/24596 (1).
- genfs_putpages: write protect pages when cleaning out, if
  we're going to take the vnode off the syncer's queue.
  uvm_fault: don't write-map pages unless its vnode is already on
  the syncer's queue.
  fix PR/24596 (3) but in the different way from the suggested fix.
  (to keep our current behaviour, ie. not to require explicit msync.
  discussed on tech-kern@.)
- genfs_putpages: don't mistakenly take a vnode off the queue
  by introducing a generation number in genfs_node.
  genfs_getpages: increment the generation number.
  suggested by Stephan Uphoff in PR/24596 (2).
- add some assertions.

        sys/miscfs/genfs/genfs_vnops.c: revision 1.102 via patch
genfs_putpages: don't bother to clean the vnode unless VONWORKLST.

        sys/ufs/ffs/ffs_vnops.c: revision 1.71
ffs_full_fsync: because VBLK/VCHR can be mmap'ed,
do VOP_PUTPAGES for them as well.

        sys/uvm/uvm_fault.c: revision 1.97
uvm_fault: check a correct object in the case of layered filesystems.
fix PR/30811 from Jukka Salmi.

        sys/uvm/uvm_object.h: revision 1.20
        sys/ufs/ffs/ffs_vfsops.c: revision 1.167
        sys/uvm/uvm_bio.c: revision 1.41
        sys/ufs/ufs/ufs_vnops.c: revision 1.129
        sys/uvm/uvm_mmap.c: revision 1.92
        sys/uvm/uvm_fault.c: revision 1.98
        sys/kern/vfs_subr.c: revision 1.252
        sys/fs/msdosfs/denode.h: revision 1.5
        sys/miscfs/genfs/genfs_vnops.c: revision 1.103 via patch
        sys/fs/msdosfs/msdosfs_denode.c: revision 1.9
        sys/sys/vnode.h: revision 1.141
        sys/ufs/ufs/ufs_inode.c: revision 1.51
        sys/ufs/ufs/ufs_extern.h: revision 1.45 via patch
        sys/miscfs/genfs/genfs_node.h: revision 1.8
        sys/ufs/lfs/lfs_vfsops.c: revision 1.184
        sys/uvm/uvm_pager.h: revision 1.30
        sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.87
update file timestamps for nfsd loaned-read and mmap.
PR/25279.  discussed on tech-kern@.

        sys/miscfs/genfs/genfs_vnops.c: revision 1.104 via patch
don't write-protect wired pages.  pointed by Chuck Silvers.
for now, leave a vnode on the syncer's queue, as suggested by him.

        sys/ufs/ffs/ffs_vnops.c: revision 1.72
revert VCHR part of ffs_vnops.c 1.71.
as VCHR uses the device pager, no point to call VOP_PUTPAGES here.
pointed by Chuck Silvers.

Revision 1.69: download - view: text, markup, annotated - select for diffs
Tue Jun 28 09:30:38 2005 UTC (19 years, 7 months ago) by yamt
Branches: MAIN
Branch point for: yamt-lazymbuf
Diff to: previous 1.68: preferred, colored
Changes since revision 1.68: +2 -2 lines
- constify genfs_ops.
- use member designators.

Revision 1.68: download - view: text, markup, annotated - select for diffs
Sun May 29 21:25:24 2005 UTC (19 years, 8 months ago) by christos
Branches: MAIN
Diff to: previous 1.67: preferred, colored
Changes since revision 1.67: +3 -3 lines
- sprinkle const
- avoid shadow variables.

Revision 1.59.2.1.2.1: download - view: text, markup, annotated - select for diffs
Tue May 10 05:08:57 2005 UTC (19 years, 9 months ago) by riz
Branches: netbsd-2
CVS tags: netbsd-2-1-RELEASE, netbsd-2-1-RC6, netbsd-2-1-RC5, netbsd-2-1-RC4, netbsd-2-1-RC3, netbsd-2-1-RC2, netbsd-2-1-RC1, netbsd-2-1
Diff to: previous 1.59.2.1: preferred, colored; next MAIN 1.60: preferred, colored
Changes since revision 1.59.2.1: +11 -3 lines
Pull up the following revisions (requested by perseant in ticket #1281):

        1.8 sys/ufs/lfs/TODO
        1.75 sys/ufs/lfs/lfs.h                  (via patch)
        1.74 sys/ufs/lfs/lfs_alloc.c            (via patch)
        1.49, 1.51 sys/ufs/lfs/lfs_balloc.c     (1.51 via patch)
        1.78 sys/ufs/lfs/lfs_bio.c
        1.62 sys/ufs/lfs/lfs_extern.h           (via patch)
        1.156 sys/ufs/lfs/lfs_segment.c         (via patch)
        1.48 sys/ufs/lfs/lfs_subr.c
        1.101 sys/ufs/lfs/lfs_syscalls.c
        1.163 sys/ufs/lfs/lfs_vfsops.c          (via patch)
        1.134 sys/ufs/lfs/lfs_vnops.c           (via patch)
        1.61 sys/ufs/ufs/ufs_readwrite.c        (via patch)

        1.20 libexec/lfs_cleanerd/clean.h       (via patch)
        1.52 libexec/lfs_cleanerd/cleanerd.c    (via patch)
        1.41 libexec/lfs_cleanerd/library.c     (via patch)

        1.4 regress/sys/fs/lfs/newfs_fsck/Makefile
        1.2 regress/sys/fs/lfs/newfs_fsck/mkfs_mount
        1.2 regress/sys/fs/lfs/newfs_fsck/smallfiles
        1.3 sbin/fsck_lfs/bufcache.c
        1.3 sbin/fsck_lfs/bufcache.h
        1.3 sbin/fsck_lfs/lfs.h
        1.8 sbin/fsck_lfs/lfs.c                 (via patch)
        1.8 sbin/fsck_lfs/pass3.c               (via patch)
        1.18 sbin/fsck_lfs/pass0.c              (via patch)
        1.18 sbin/fsck_lfs/utilities.c          (via patch)
        1.7 sbin/fsck_lfs/segwrite.c
        1.19 sbin/fsck_lfs/setup.c              (via patch)
        1.3 sbin/newfs_lfs/Makefile
        0 sbin/newfs_lfs/lfs.c                  (yes, remove it)
        1.1 sbin/newfs_lfs/make_lfs.c
        1.15 sbin/newfs_lfs/newfs.c             (via patch)

Various minor LFS improvements.

Kernel:

* Note when lfs_putpages(9) thinks it is not going to be writing any
   pages before calling genfs_putpages(9).  This prevents a situation in
   which blocks can be queued for writing without a segment header.
* Correct computation of NRESERVE(), though it is still a gross
   overestimate in most cases.  Note that if NRESERVE() is too high, it
   may be impossible to create files on the filesystem.  We catch this
   case on filesystem mount and refuse to mount r/w.
* Allow filesystems to be mounted whose block size is == MAXBSIZE.
* Somewhere along the line, ufs_bmaparray(9) started mangling UNWRITTEN
   entries in indirect blocks again, triggering a failed assertion "daddr
   <= LFS_MAX_DADDR".  Explicitly convert to and from int32_t to correct
   this.  Should fix PR #29045.
* Add a high-water mark for the number of dirty pages any given LFS can
   hold before triggering a flush.  This is settable by sysctl, but off
   (zero) by default.
* Be more careful about the MAX_BYTES and MAX_BUFS computations so we
   shouldn't see "please increase to at least zero" messages.
* Note that VBLK and VCHR vnodes can have nonzero values in di_db[0]
   even though their v_size == 0.  Don't panic when we see this.
   Fixes PR #26680.
* Change lfs_bfree to a signed quantity.  The manner in which it is
   processed before being passed to the cleaner means that sometimes it
   may drop below zero, and the cleaner must be aware of this.
* Never report bfree < 0 (or higher than lfs_dsize) through
   lfs_statfs(9).  This prevents df(1) from ever telling us that our full
   filesystems have 16TB free.
* Account space allocated through lfs_balloc(9) that does not have
   associated buffer headers, so that the pagedaemon doesn't run us out
   of segments.
* Return ENOSPC from lfs_balloc(9) when bfree drops to zero.
* Address a deadlock in lfs_bmapv/lfs_markv when the filesystem is being
   unmounted.  Because vfs_busy() is a shared lock, and
   lfs_bmapv/lfs_markv mark the filesystem vfs_busy(), the cleaner can be
   holding the lock that umount() is blocking on, then try to vfs_busy()
   again in getnewvnode().

cleaner:

* Adapt lfs_cleanerd to use the fcntl call to get the Ifile filehandle,
   so it need not be in the namespace.
* Make lfs_cleanerd be more careful when there are very few available
   segments.
* Make lfs_cleanerd less verbose when the filesystem is unmounted.

newfs_lfs, fsck_lfs, and regression:

* Extend the lfs library from fsck_lfs(8) so that it can be used with a
   not-yet-existent LFS.  Make newfs_lfs(8) use this library, so it can
   create LFSs whose Ifile is larger than one segment.  Addresses PR #11110.
* Make newfs_lfs(8) use strsuftoi64() for its arguments, a la newfs(8).
* Make fsck_lfs(8) respect the "file system is clean" flag.
* Don't let fsck_lfs(8) think it has dirty blocks when invoked with the
   -n flag.
* Remove the Ifile from the filesystem namespace.  The cleaner now uses
   a fcntl call on the root inode to find the Ifile filehandle.  (As a
   side-effect, addresses PR #29144.)

Revision 1.64.2.1: download - view: text, markup, annotated - select for diffs
Sat May 7 11:21:30 2005 UTC (19 years, 9 months ago) by tron
Branches: netbsd-3
Diff to: previous 1.64: preferred, colored
Changes since revision 1.64: +5 -2 lines
Apply patch (requested by perseant in ticket #242):
* fsck_lfs buffer cache fixes, including PR #29151
* Change fsck_lfs phase 0 message to reflect reality
* fsck_lfs: check phase 5 (cleanerinfo accounting) even on
  roll-forward
* Keep better track of the free list during roll-forward, avoiding
  a core dump
* Improve hash table use for fsck_lfs buffer and vnode cache
* Document fsck_lfs flag -f, and implement -q
* Add resize_lfs, including kernel support
* Add LFS to mountd's list of exportable filesystem types
* Make the LFS lkm work again [christos@]
* Add MP locking to the LFS kernel subsystem
* Fix pager_map deadlock in lfs_putpages()
* Avoid incomplete file extension that looks like "partial
  truncation" to fsck
* Use lfs_malloc for cleaner malloc, since the cleaner often runs
  in low-memory conditions.
* Use splay trees, not hash table, to track page allocation for
  write.
* Fix mkdir panic on full fs
* Fix page accounting leak by counting differently.
* Use rightly named structure for lfs_getattr [skrll@]
* Cosmetic changes for readability.

Revision 1.61.4.1: download - view: text, markup, annotated - select for diffs
Fri Apr 29 11:29:39 2005 UTC (19 years, 9 months ago) by kent
Branches: kent-audio2
Diff to: previous 1.61: preferred, colored; next MAIN 1.62: preferred, colored
Changes since revision 1.61: +22 -5 lines
sync with -current

Revision 1.67: download - view: text, markup, annotated - select for diffs
Sat Apr 23 19:47:51 2005 UTC (19 years, 10 months ago) by perseant
Branches: MAIN
CVS tags: kent-audio2-base
Diff to: previous 1.66: preferred, colored
Changes since revision 1.66: +5 -2 lines
Provide a resize_lfs(8), including kernel and cleaner support.  The current
implementation requires the fs to be mounted while resizing.  Tested in both
directions, and everything appears to work happily, but ymmv.

Revision 1.66: download - view: text, markup, annotated - select for diffs
Sat Apr 16 17:35:58 2005 UTC (19 years, 10 months ago) by perseant
Branches: MAIN
Diff to: previous 1.65: preferred, colored
Changes since revision 1.65: +2 -1 lines
Use splay trees, rather than a hash table, to manage the accounting of
blocks allocated through VOP_BALLOC() for pages to be written to disk.
This accounting no longer takes a noticeable fraction of the system CPU.

Revision 1.65: download - view: text, markup, annotated - select for diffs
Thu Apr 14 00:44:17 2005 UTC (19 years, 10 months ago) by perseant
Branches: MAIN
Diff to: previous 1.64: preferred, colored
Changes since revision 1.64: +1 -2 lines
Consolidate the hash table we use to maintain the integrity of lfs_avail
into a single, system-wide table, rather than having a separate hash table
per inode.  Significantly reduces the "system" cpu usage of your average
file write.

Revision 1.61.6.1: download - view: text, markup, annotated - select for diffs
Sat Mar 19 08:37:03 2005 UTC (19 years, 11 months ago) by yamt
Branches: yamt-km
Diff to: previous 1.61: preferred, colored; next MAIN 1.62: preferred, colored
Changes since revision 1.61: +18 -4 lines
sync with head.  xen and whitespace.  xen part is not finished.

Revision 1.50.2.8: download - view: text, markup, annotated - select for diffs
Tue Mar 8 13:53:12 2005 UTC (19 years, 11 months ago) by skrll
Branches: ktrace-lwp
Diff to: previous 1.50.2.7: preferred, colored
Changes since revision 1.50.2.7: +8 -2 lines
Sync with HEAD.

Revision 1.64: download - view: text, markup, annotated - select for diffs
Tue Mar 8 00:18:19 2005 UTC (19 years, 11 months ago) by perseant
Branches: MAIN
CVS tags: yamt-km-base4, yamt-km-base3, netbsd-3-base
Branch point for: netbsd-3
Diff to: previous 1.63: preferred, colored
Changes since revision 1.63: +8 -2 lines
Straighten out the maze of ifdefs.  Instead, consolidate all the debugging
stuff under '#ifdef DEBUG', and use sysctl knobs to turn on/off particular
parts of the debugging reporting (if DEBUG is enabled).  Re-enable the LFS
statistics in sysctl, while I'm there.  A bit of a rototill.

Revision 1.50.2.7: download - view: text, markup, annotated - select for diffs
Fri Mar 4 16:54:48 2005 UTC (19 years, 11 months ago) by skrll
Branches: ktrace-lwp
Diff to: previous 1.50.2.6: preferred, colored
Changes since revision 1.50.2.6: +12 -4 lines
Sync with HEAD.

Hi Perry!

Revision 1.63: download - view: text, markup, annotated - select for diffs
Sat Feb 26 22:32:20 2005 UTC (19 years, 11 months ago) by perry
Branches: MAIN
Diff to: previous 1.62: preferred, colored
Changes since revision 1.62: +2 -2 lines
nuke trailing whitespace

Revision 1.62: download - view: text, markup, annotated - select for diffs
Sat Feb 26 05:40:42 2005 UTC (19 years, 11 months ago) by perseant
Branches: MAIN
Diff to: previous 1.61: preferred, colored
Changes since revision 1.61: +11 -3 lines
Various minor LFS improvements:

* Note when lfs_putpages(9) thinks it is not going to be writing any
  pages before calling genfs_putpages(9).  This prevents a situation in
  which blocks can be queued for writing without a segment header.
* Correct computation of NRESERVE(), though it is still a gross
  overestimate in most cases.  Note that if NRESERVE() is too high, it
  may be impossible to create files on the filesystem.  We catch this
  case on filesystem mount and refuse to mount r/w.
* Allow filesystems to be mounted whose block size is == MAXBSIZE.
* Somewhere along the line, ufs_bmaparray(9) started mangling UNWRITTEN
  entries in indirect blocks again, triggering a failed assertion "daddr
  <= LFS_MAX_DADDR".  Explicitly convert to and from int32_t to correct
  this.
* Add a high-water mark for the number of dirty pages any given LFS can
  hold before triggering a flush.  This is settable by sysctl, but off
  (zero) by default.
* Be more careful about the MAX_BYTES and MAX_BUFS computations so we
  shouldn't see "please increase to at least zero" messages.
* Note that VBLK and VCHR vnodes can have nonzero values in di_db[0]
  even though their v_size == 0.  Don't panic when we see this.
* Change lfs_bfree to a signed quantity.  The manner in which it is
  processed before being passed to the cleaner means that sometimes it
  may drop below zero, and the cleaner must be aware of this.
* Never report bfree < 0 (or higher than lfs_dsize) through
  lfs_statvfs(9).  This prevents df(1) from ever telling us that our full
  filesystems have 16TB free.
* Account space allocated through lfs_balloc(9) that does not have
  associated buffer headers, so that the pagedaemon doesn't run us out
  of segments.
* Return ENOSPC from lfs_balloc(9) when bfree drops to zero.
* Address a deadlock in lfs_bmapv/lfs_markv when the filesystem is being
  unmounted.  Because vfs_busy() is a shared lock, and
  lfs_bmapv/lfs_markv mark the filesystem vfs_busy(), the cleaner can be
  holding the lock that umount() is blocking on, then try to vfs_busy()
  again in getnewvnode().

Revision 1.50.2.6: download - view: text, markup, annotated - select for diffs
Sat Oct 30 09:17:57 2004 UTC (20 years, 3 months ago) by skrll
Branches: ktrace-lwp
Diff to: previous 1.50.2.5: preferred, colored
Changes since revision 1.50.2.5: +2 -2 lines
Oops, forgot this as part of the

"Reduced diff to HEAD by restoring the struct proc * argument to lfs_bmapv"

change

Revision 1.50.2.5: download - view: text, markup, annotated - select for diffs
Tue Sep 21 13:39:15 2004 UTC (20 years, 5 months ago) by skrll
Branches: ktrace-lwp
Diff to: previous 1.50.2.4: preferred, colored
Changes since revision 1.50.2.4: +7 -7 lines
Fix the sync with head I botched.

Revision 1.50.2.4: download - view: text, markup, annotated - select for diffs
Sat Sep 18 14:56:59 2004 UTC (20 years, 5 months ago) by skrll
Branches: ktrace-lwp
Diff to: previous 1.50.2.3: preferred, colored
Changes since revision 1.50.2.3: +7 -7 lines
Sync with HEAD.

Revision 1.50.2.3: download - view: text, markup, annotated - select for diffs
Tue Aug 24 17:57:53 2004 UTC (20 years, 5 months ago) by skrll
Branches: ktrace-lwp
Diff to: previous 1.50.2.2: preferred, colored
Changes since revision 1.50.2.2: +3 -3 lines
Undo part of the ktrace/lwp changes.  In particular:
* Remove the "lwp *" argument that was added to vget().  Turns out
  that nothing actually used it!
* Remove the "lwp *" arguments that were added to VFS_ROOT(), VFS_VGET(),
  and VFS_FHTOVP(); all they did was pass it to vget() (which, as noted
  above, didn't use it).
* Remove all of the "lwp *" arguments to internal functions that were added
  just to appease the above.

Revision 1.50.2.2: download - view: text, markup, annotated - select for diffs
Tue Aug 3 10:56:57 2004 UTC (20 years, 6 months ago) by skrll
Branches: ktrace-lwp
Diff to: previous 1.50.2.1: preferred, colored
Changes since revision 1.50.2.1: +22 -16 lines
Sync with HEAD

Revision 1.59.2.1: download - view: text, markup, annotated - select for diffs
Sun May 23 10:44:28 2004 UTC (20 years, 9 months ago) by tron
Branches: netbsd-2-0
CVS tags: netbsd-2-base, netbsd-2-0-RELEASE, netbsd-2-0-RC5, netbsd-2-0-RC4, netbsd-2-0-RC3, netbsd-2-0-RC2, netbsd-2-0-RC1, netbsd-2-0-3-RELEASE, netbsd-2-0-2-RELEASE, netbsd-2-0-1-RELEASE
Branch point for: netbsd-2
Diff to: previous 1.59: preferred, colored; next MAIN 1.60: preferred, colored
Changes since revision 1.59: +5 -1 lines
Pull up revision 1.61 (requested by atatat in ticket #374):
Tweak sysctl setup functions (the macros, actually) for use in lkms,
and tweak lkminit_*.c (where applicable) to call them, and to call
sysctl_teardown() when being unloaded.
This consists of (1) making setup functions not be static when being
compiled as lkms (change to sys/sysctl.h), (2) making prototypes
visible for the various setup functions in header files (changes to
various header files), and (3) making simple "load" and "unload"
functions in the actual lkminit stuff.
linux_sysctl.c also needs its root exposed (ie, made not static) for
this (when built as an lkm).

Revision 1.61: download - view: text, markup, annotated - select for diffs
Thu May 20 06:34:33 2004 UTC (20 years, 9 months ago) by atatat
Branches: MAIN
CVS tags: yamt-km-base2, yamt-km-base, kent-audio1-beforemerge, kent-audio1-base, kent-audio1
Branch point for: yamt-km, kent-audio2
Diff to: previous 1.60: preferred, colored
Changes since revision 1.60: +5 -1 lines
Tweak sysctl setup functions (the macros, actually) for use in lkms,
and tweak lkminit_*.c (where applicable) to call them, and to call
sysctl_teardown() when being unloaded.

This consists of (1) making setup functions not be static when being
compiled as lkms (change to sys/sysctl.h), (2) making prototypes
visible for the various setup functions in header files (changes to
various header files), and (3) making simple "load" and "unload"
functions in the actual lkminit stuff.

linux_sysctl.c also needs its root exposed (ie, made not static) for
this (when built as an lkm).

Revision 1.60: download - view: text, markup, annotated - select for diffs
Wed Apr 21 01:05:44 2004 UTC (20 years, 10 months ago) by christos
Branches: MAIN
Diff to: previous 1.59: preferred, colored
Changes since revision 1.59: +3 -3 lines
Replace the statfs() family of system calls with statvfs().
Retain binary compatibility.

Revision 1.59: download - view: text, markup, annotated - select for diffs
Tue Mar 9 07:43:49 2004 UTC (20 years, 11 months ago) by yamt
Branches: MAIN
CVS tags: netbsd-2-0-base
Branch point for: netbsd-2-0
Diff to: previous 1.58: preferred, colored
Changes since revision 1.58: +3 -1 lines
calculate data checksum inline.

Revision 1.58: download - view: text, markup, annotated - select for diffs
Thu Dec 4 19:38:25 2003 UTC (21 years, 2 months ago) by atatat
Branches: MAIN
Diff to: previous 1.57: preferred, colored
Changes since revision 1.57: +1 -2 lines
Dynamic sysctl.

Gone are the old kern_sysctl(), cpu_sysctl(), hw_sysctl(),
vfs_sysctl(), etc, routines, along with sysctl_int() et al.  Now all
nodes are registered with the tree, and nodes can be added (or
removed) easily, and I/O to and from the tree is handled generically.

Since the nodes are registered with the tree, the mapping from name to
number (and back again) can now be discovered, instead of having to be
hard coded.  Adding new nodes to the tree is likewise much simpler --
the new infrastructure handles almost all the work for simple types,
and just about anything else can be done with a small helper function.

All existing nodes are where they were before (numerically speaking),
so all existing consumers of sysctl information should notice no
difference.

PS - I'm sorry, but there's a distinct lack of documentation at the
moment.  I'm working on sysctl(3/8/9) right now, and I promise to
watch out for buses.

Revision 1.57: download - view: text, markup, annotated - select for diffs
Fri Nov 7 17:55:29 2003 UTC (21 years, 3 months ago) by yamt
Branches: MAIN
Diff to: previous 1.56: preferred, colored
Changes since revision 1.56: +3 -2 lines
- tweak lfs_update_single()'s prototype so that it can be used by
  roll-forward code.
- reduce code duplication using the above in update_meta()
  this also fixes fragment accounting.

Revision 1.56: download - view: text, markup, annotated - select for diffs
Fri Nov 7 14:52:27 2003 UTC (21 years, 3 months ago) by yamt
Branches: MAIN
Diff to: previous 1.55: preferred, colored
Changes since revision 1.55: +2 -2 lines
fix spec vnode aliasing.

Revision 1.55: download - view: text, markup, annotated - select for diffs
Mon Sep 29 15:12:08 2003 UTC (21 years, 4 months ago) by yamt
Branches: MAIN
Diff to: previous 1.54: preferred, colored
Changes since revision 1.54: +1 -6 lines
remove redundant prototypes.

Revision 1.54: download - view: text, markup, annotated - select for diffs
Tue Sep 23 05:26:49 2003 UTC (21 years, 5 months ago) by yamt
Branches: MAIN
Diff to: previous 1.53: preferred, colored
Changes since revision 1.53: +2 -1 lines
cleanup IN_ADIROP/VDIROP handling a little.

Revision 1.53: download - view: text, markup, annotated - select for diffs
Thu Aug 7 16:34:36 2003 UTC (21 years, 6 months ago) by agc
Branches: MAIN
Diff to: previous 1.52: preferred, colored
Changes since revision 1.52: +2 -6 lines
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

Revision 1.52: download - view: text, markup, annotated - select for diffs
Sat Jul 12 16:17:07 2003 UTC (21 years, 7 months ago) by yamt
Branches: MAIN
Diff to: previous 1.51: preferred, colored
Changes since revision 1.51: +7 -1 lines
- protect global resource counts with lfs_subsys_lock.
- clean up scattered externs a little.

Revision 1.50.2.1: download - view: text, markup, annotated - select for diffs
Wed Jul 2 15:27:23 2003 UTC (21 years, 7 months ago) by darrenr
Branches: ktrace-lwp
Diff to: previous 1.50: preferred, colored
Changes since revision 1.50: +10 -10 lines
Apply the aborted ktrace-lwp changes to a specific branch.  This is just for
others to review, I'm concerned that patch fuziness may have resulted in some
errant code being generated but I'll look at that later by comparing the diff
from the base to the branch with the file I attempt to apply to it.  This will,
at the very least, put the changes in a better context for others to review
them and attempt to tinker with removing passing of 'struct lwp' through
the kernel.

Revision 1.51: download - view: text, markup, annotated - select for diffs
Wed Jul 2 13:40:52 2003 UTC (21 years, 7 months ago) by yamt
Branches: MAIN
Diff to: previous 1.50: preferred, colored
Changes since revision 1.50: +3 -1 lines
- add a new functions, lfs_writer_enter/leave, and use them instead of
  duplicated code fragments.
- add an assertion.

Revision 1.50: download - view: text, markup, annotated - select for diffs
Sun Jun 29 22:32:38 2003 UTC (21 years, 7 months ago) by fvdl
Branches: MAIN
Branch point for: ktrace-lwp
Diff to: previous 1.49: preferred, colored
Changes since revision 1.49: +8 -8 lines
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Revision 1.49: download - view: text, markup, annotated - select for diffs
Sun Jun 29 18:43:44 2003 UTC (21 years, 7 months ago) by thorpej
Branches: MAIN
Diff to: previous 1.48: preferred, colored
Changes since revision 1.48: +3 -3 lines
Undo part of the ktrace/lwp changes.  In particular:
* Remove the "lwp *" argument that was added to vget().  Turns out
  that nothing actually used it!
* Remove the "lwp *" arguments that were added to VFS_ROOT(), VFS_VGET(),
  and VFS_FHTOVP(); all they did was pass it to vget() (which, as noted
  above, didn't use it).
* Remove all of the "lwp *" arguments to internal functions that were added
  just to appease the above.

Revision 1.48: download - view: text, markup, annotated - select for diffs
Sat Jun 28 14:22:26 2003 UTC (21 years, 7 months ago) by darrenr
Branches: MAIN
Diff to: previous 1.47: preferred, colored
Changes since revision 1.47: +10 -10 lines
Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records.  The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V

Revision 1.47: download - view: text, markup, annotated - select for diffs
Wed Apr 2 10:39:40 2003 UTC (21 years, 10 months ago) by fvdl
Branches: MAIN
Diff to: previous 1.46: preferred, colored
Changes since revision 1.46: +7 -6 lines
Add support for UFS2. UFS2 is an enhanced FFS, adding support for
64 bit block pointers, extended attribute storage, and a few
other things.

This commit does not yet include the code to manipulate the extended
storage (for e.g. ACLs), this will be done later.

Originally written by Kirk McKusick and Network Associates Laboratories for
FreeBSD.

Revision 1.46: download - view: text, markup, annotated - select for diffs
Thu Mar 20 14:11:46 2003 UTC (21 years, 11 months ago) by yamt
Branches: MAIN
Diff to: previous 1.45: preferred, colored
Changes since revision 1.45: +2 -1 lines
fix "more than one fragment" panics;
direct and indirect block pointers are not valid in the case of shortlinks.
while i'm here, move duplicated code in lfs_vget/fastvget into a new
function, lfs_vinit.

Revision 1.45: download - view: text, markup, annotated - select for diffs
Sat Mar 8 02:55:48 2003 UTC (21 years, 11 months ago) by perseant
Branches: MAIN
Diff to: previous 1.44: preferred, colored
Changes since revision 1.44: +2 -1 lines
Add an lfs_strategy() that checks to make sure we're not trying to read
where the cleaner is trying to write, instead of tying up the "live"
buffers (or pages).

Fix a bug in the LFS_UBC case where oversized buffers would not be
checksummed correctly, causing uncleanable segments.

Make sure that wakeup(fs->lfs_iocount) is done if fs->lfs_iocount is 1
as well as 0, since we wait in some places for it to drop to 1.

Activate all pages that make it into lfs_gop_write without the segment
lock held, since they must have been dirtied very recently, even if
PG_DELWRI is not set.

Revision 1.44: download - view: text, markup, annotated - select for diffs
Tue Feb 25 23:12:07 2003 UTC (21 years, 11 months ago) by perseant
Branches: MAIN
Diff to: previous 1.43: preferred, colored
Changes since revision 1.43: +2 -2 lines
Make fs-specific fcntl macros take three arguments (approved wrstuden).
Let LFS use fcntl for cleaner functions.

Revision 1.43: download - view: text, markup, annotated - select for diffs
Mon Feb 24 08:42:49 2003 UTC (21 years, 11 months ago) by perseant
Branches: MAIN
Diff to: previous 1.42: preferred, colored
Changes since revision 1.42: +7 -1 lines
Add lfs_ioctl vnode op, with ioctls to take over cleaner system call
functionality (not including segment clean, since that is now done
automatically as checkpoints happen).

Revision 1.42: download - view: text, markup, annotated - select for diffs
Sun Feb 23 00:22:34 2003 UTC (22 years ago) by perseant
Branches: MAIN
Diff to: previous 1.41: preferred, colored
Changes since revision 1.41: +3 -3 lines
Fix a buffer overflow bug in the LFS_UBC case that manifested itself
either as a mysterious UVM error or as "panic: dirty bufs".  Verify
maximum size in lfs_malloc.

Teach lfs_updatemeta and lfs_shellsort about oversized cluster blocks from
lfs_gop_write.

When unwiring pages in lfs_gop_write, deactivate them, under the theory
that the pagedaemon wanted to free them last we knew.

Revision 1.41: download - view: text, markup, annotated - select for diffs
Thu Feb 20 04:27:24 2003 UTC (22 years ago) by perseant
Branches: MAIN
Diff to: previous 1.40: preferred, colored
Changes since revision 1.40: +4 -4 lines
Tabify, and fix some comment alignment problems.

Revision 1.40: download - view: text, markup, annotated - select for diffs
Tue Feb 18 02:00:08 2003 UTC (22 years ago) by perseant
Branches: MAIN
Diff to: previous 1.39: preferred, colored
Changes since revision 1.39: +2 -1 lines
Make it compile again, grr....

Revision 1.39: download - view: text, markup, annotated - select for diffs
Mon Feb 17 23:48:18 2003 UTC (22 years ago) by perseant
Branches: MAIN
Diff to: previous 1.38: preferred, colored
Changes since revision 1.38: +20 -17 lines
Add code to UBCify LFS.  This is still behind "#ifdef LFS_UBC" for now
(there are still some details to work out) but expect that to go
away soon.  To support these basic changes (creation of lfs_putpages,
lfs_gop_write, mods to lfs_balloc) several other changes were made, to
wit:

* Create a writer daemon kernel thread whose purpose is to handle page
  writes for the pagedaemon, but which also takes over some of the
  functions of lfs_check().  This thread is started the first time an
  LFS is mounted.

* Add a "flags" parameter to GOP_SIZE.  Current values are
  GOP_SIZE_READ, meaning that the call should return the size of the
  in-core version of the file, and GOP_SIZE_WRITE, meaning that it
  should return the on-disk size.  One of GOP_SIZE_READ or
  GOP_SIZE_WRITE must be specified.

* Instead of using malloc(...M_WAITOK) for everything, reserve enough
  resources to get by and use malloc(...M_NOWAIT), using the reserves if
  necessary.  Use the pool subsystem for structures small enough that
  this is feasible.  This also obsoletes LFS_THROTTLE.

And a few that are not strictly necessary:

* Moves the LFS inode extensions off onto a separately allocated
  structure; getting closer to LFS as an LKM.  "Welcome to 1.6O."

* Unified GOP_ALLOC between FFS and LFS.

* Update LFS copyright headers to correct values.

* Actually cast to unsigned in lfs_shellsort, like the comment says.

* Keep track of which segments were empty before the previous
  checkpoint; any segments that pass two checkpoints both dirty and
  empty can be summarily cleaned.  Do this.  Right now lfs_segclean
  still works, but this should be turned into an effectless
  compatibility syscall.

Revision 1.38: download - view: text, markup, annotated - select for diffs
Sat Feb 1 18:34:14 2003 UTC (22 years ago) by tron
Branches: MAIN
Diff to: previous 1.37: preferred, colored
Changes since revision 1.37: +4 -1 lines
Only use MALLOC_DECLARE() in kernel namespace.

Revision 1.37: download - view: text, markup, annotated - select for diffs
Sat Feb 1 06:23:53 2003 UTC (22 years ago) by thorpej
Branches: MAIN
Diff to: previous 1.36: preferred, colored
Changes since revision 1.36: +4 -1 lines
Add extensible malloc types, adapted from FreeBSD.  This turns
malloc types into a structure, a pointer to which is passed around,
instead of an int constant.  Allow the limit to be adjusted when the
malloc type is defined, or with a function call, as suggested by
Jonathan Stone.

Revision 1.36: download - view: text, markup, annotated - select for diffs
Thu Jan 30 14:18:32 2003 UTC (22 years ago) by yamt
Branches: MAIN
Diff to: previous 1.35: preferred, colored
Changes since revision 1.35: +1 -2 lines
there's no need to treat VOP_WHITEOUT as dirop
because it modifies only one inode.

Revision 1.35: download - view: text, markup, annotated - select for diffs
Fri Jan 24 21:55:27 2003 UTC (22 years ago) by fvdl
Branches: MAIN
Diff to: previous 1.34: preferred, colored
Changes since revision 1.34: +7 -6 lines
Bump daddr_t to 64 bits. Replace it with int32_t in all places where
it was used on-disk, so that on-disk formats remain the same.
Remove ufs_daddr_t and ufs_lbn_t for the time being.

Revision 1.24.2.8: download - view: text, markup, annotated - select for diffs
Sun Dec 29 20:57:19 2002 UTC (22 years, 1 month ago) by thorpej
Branches: nathanw_sa
CVS tags: nathanw_sa_end
Diff to: previous 1.24.2.7: preferred, colored; branchpoint 1.24: preferred, colored; next MAIN 1.25: preferred, colored
Changes since revision 1.24.2.7: +2 -2 lines
Sync with HEAD.

Revision 1.34: download - view: text, markup, annotated - select for diffs
Sat Dec 28 14:39:09 2002 UTC (22 years, 1 month ago) by yamt
Branches: MAIN
CVS tags: nathanw_sa_before_merge, nathanw_sa_base, fvdl_fs64_base
Diff to: previous 1.33: preferred, colored
Changes since revision 1.33: +2 -2 lines
- in lfs_reserve, vref vnodes that we're locking so that cleaner doesn't
  try to reclaim them.
  (workaround for deadlock noted in the comment in lfs_reserveavail)
- in lfs_rename, mark vnodes which are being moved as well as directry vnodes.

Revision 1.24.2.7: download - view: text, markup, annotated - select for diffs
Thu Dec 19 00:59:48 2002 UTC (22 years, 2 months ago) by thorpej
Branches: nathanw_sa
Diff to: previous 1.24.2.6: preferred, colored; branchpoint 1.24: preferred, colored
Changes since revision 1.24.2.6: +2 -2 lines
Sync with HEAD.

Revision 1.33: download - view: text, markup, annotated - select for diffs
Tue Dec 17 14:37:49 2002 UTC (22 years, 2 months ago) by yamt
Branches: MAIN
CVS tags: gmcgarry_ucred_base, gmcgarry_ucred, gmcgarry_ctxsw_base, gmcgarry_ctxsw
Diff to: previous 1.32: preferred, colored
Changes since revision 1.32: +2 -2 lines
no need for cleaner to hold vnode locks.
cleaner and normal vnode operations are synchronized enough by
seglock/fraglock and buf's B_BUSY-ness.

Revision 1.24.2.6: download - view: text, markup, annotated - select for diffs
Wed Dec 11 06:51:44 2002 UTC (22 years, 2 months ago) by thorpej
Branches: nathanw_sa
Diff to: previous 1.24.2.5: preferred, colored; branchpoint 1.24: preferred, colored
Changes since revision 1.24.2.5: +6 -1 lines
Sync with HEAD.

Revision 1.32: download - view: text, markup, annotated - select for diffs
Sun Dec 1 00:12:11 2002 UTC (22 years, 2 months ago) by matt
Branches: MAIN
Diff to: previous 1.31: preferred, colored
Changes since revision 1.31: +6 -1 lines
Add multiple inclusion protection for headers.  Fix mismatched
variable declarations (missing const's) as needed.

Revision 1.24.6.4: download - view: text, markup, annotated - select for diffs
Sun Jun 23 17:52:11 2002 UTC (22 years, 8 months ago) by jdolecek
Branches: kqueue
Diff to: previous 1.24.6.3: preferred, colored; branchpoint 1.24: preferred, colored; next MAIN 1.25: preferred, colored
Changes since revision 1.24.6.3: +34 -29 lines
catch up with -current on kqueue branch

Revision 1.30.2.1: download - view: text, markup, annotated - select for diffs
Thu Jun 20 15:53:08 2002 UTC (22 years, 8 months ago) by gehenna
Branches: gehenna-devsw
Diff to: previous 1.30: preferred, colored; next MAIN 1.31: preferred, colored
Changes since revision 1.30: +29 -27 lines
catch up with -current.

Revision 1.30.4.1: download - view: text, markup, annotated - select for diffs
Thu Jun 20 03:51:23 2002 UTC (22 years, 8 months ago) by lukem
Branches: netbsd-1-6
CVS tags: netbsd-1-6-RELEASE, netbsd-1-6-RC3, netbsd-1-6-RC2, netbsd-1-6-RC1, netbsd-1-6-PATCH002-RELEASE, netbsd-1-6-PATCH002-RC4, netbsd-1-6-PATCH002-RC3, netbsd-1-6-PATCH002-RC2, netbsd-1-6-PATCH002-RC1, netbsd-1-6-PATCH002, netbsd-1-6-PATCH001-RELEASE, netbsd-1-6-PATCH001-RC3, netbsd-1-6-PATCH001-RC2, netbsd-1-6-PATCH001-RC1, netbsd-1-6-PATCH001
Diff to: previous 1.30: preferred, colored; next MAIN 1.31: preferred, colored
Changes since revision 1.30: +29 -27 lines
Pull up revision 1.31 (requested by perseant in ticket #325):
For synchronous writes, keep separate i/o counters for each write, so
processes don't have to wait for one another to finish (e.g., nfsd seems
to be a little happier now, though I haven't measured the difference).
Synchronous checkpoints, however, must always wait for all i/o to finish.
Take the contents of the callback functions and have them run in thread
context instead (aiodoned thread).  lfs_iocount no longer has to be
protected in splbio(), and quite a bit less of the segment construction
loop needs to be in splbio() as well.
If lfs_markv is handed a block that is not the correct size according to
the inode, refuse to process it.  (Formerly it was extended to the "correct"
size.)  This is possibly more prone to deadlock, but less prone to corruption.
lfs_segclean now outright refuses to clean segments that appear to have live
bytes in them.  Again this may be more prone to deadlock but avoids
corruption.
Replace ufsspec_close and ufsfifo_close with LFS equivalents; this means
that no UFS functions need to know about LFS_ITIMES any more.  Remove
the reference from ufs/inode.h.
Tested on i386, test-compiled on alpha.

Revision 1.24.2.5: download - view: text, markup, annotated - select for diffs
Thu Jun 20 03:50:30 2002 UTC (22 years, 8 months ago) by nathanw
Branches: nathanw_sa
Diff to: previous 1.24.2.4: preferred, colored; branchpoint 1.24: preferred, colored
Changes since revision 1.24.2.4: +34 -29 lines
Catch up to -current.

Revision 1.31: download - view: text, markup, annotated - select for diffs
Sun Jun 16 00:13:15 2002 UTC (22 years, 8 months ago) by perseant
Branches: MAIN
CVS tags: kqueue-beforemerge, kqueue-base, kqueue-aftermerge, gehenna-devsw-base
Diff to: previous 1.30: preferred, colored
Changes since revision 1.30: +29 -27 lines
For synchronous writes, keep separate i/o counters for each write, so
processes don't have to wait for one another to finish (e.g., nfsd seems
to be a little happier now, though I haven't measured the difference).
Synchronous checkpoints, however, must always wait for all i/o to finish.

Take the contents of the callback functions and have them run in thread
context instead (aiodoned thread).  lfs_iocount no longer has to be
protected in splbio(), and quite a bit less of the segment construction
loop needs to be in splbio() as well.

If lfs_markv is handed a block that is not the correct size according to
the inode, refuse to process it.  (Formerly it was extended to the "correct"
size.)  This is possibly more prone to deadlock, but less prone to corruption.

lfs_segclean now outright refuses to clean segments that appear to have live
bytes in them.  Again this may be more prone to deadlock but avoids
corruption.

Replace ufsspec_close and ufsfifo_close with LFS equivalents; this means
that no UFS functions need to know about LFS_ITIMES any more.  Remove
the reference from ufs/inode.h.

Tested on i386, test-compiled on alpha.

Revision 1.30: download - view: text, markup, annotated - select for diffs
Tue May 14 20:03:53 2002 UTC (22 years, 9 months ago) by perseant
Branches: MAIN
CVS tags: netbsd-1-6-base
Branch point for: netbsd-1-6, gehenna-devsw
Diff to: previous 1.29: preferred, colored
Changes since revision 1.29: +5 -3 lines
Phase one of my three-phase plan to make LFS play nice with UBC, and bug-fixes
I found while making sure there weren't any new ones.

* Make the write clusters keep track of the buffers whose blocks they contain.
  This should make it possible to (1) write clusters using a page mapping
  instead of malloc, if desired, and (2) schedule blocks for rewriting
  (somewhere else) if a write error occurs.  Code is present to use
  pagemove() to construct the clusters but that is untested and will go away
  anyway in favor of page mapping.
* DEBUG now keeps a log of Ifile writes, so that any lingering instances of
  the "dirty bufs" problem can be properly debugged.
* Keep track of whether the Ifile has been dirtied by various routines that
  can be called by lfs_segwrite, and loop on that until it is clean, for
  a checkpoint.  Checkpoints need to be squeaky clean.
* Warn the user (once) if the Ifile grows larger than is reasonable for their
  buffer cache.  Both lfs_mountfs and lfs_unmount check since the Ifile can
  grow.
* If an inode is not found in a disk block, try rereading the block, under
  the assumption that the block was copied to a cluster and then freed.
* Protect WRITEINPROG() with splbio() to fix a hang in lfs_update.

Revision 1.29: download - view: text, markup, annotated - select for diffs
Sun May 12 23:06:29 2002 UTC (22 years, 9 months ago) by matt
Branches: MAIN
Diff to: previous 1.28: preferred, colored
Changes since revision 1.28: +2 -1 lines
Eliminate commons.

Revision 1.24.6.3: download - view: text, markup, annotated - select for diffs
Sat Mar 16 16:02:25 2002 UTC (22 years, 11 months ago) by jdolecek
Branches: kqueue
Diff to: previous 1.24.6.2: preferred, colored; branchpoint 1.24: preferred, colored
Changes since revision 1.24.6.2: +2 -1 lines
Catch up with -current.

Revision 1.24.2.4: download - view: text, markup, annotated - select for diffs
Thu Feb 28 04:15:29 2002 UTC (22 years, 11 months ago) by nathanw
Branches: nathanw_sa
Diff to: previous 1.24.2.3: preferred, colored; branchpoint 1.24: preferred, colored
Changes since revision 1.24.2.3: +2 -1 lines
Catch up to -current.

Revision 1.28: download - view: text, markup, annotated - select for diffs
Mon Feb 11 02:47:29 2002 UTC (23 years ago) by perseant
Branches: MAIN
CVS tags: newlock-base, newlock, ifpoll-base, eeh-devprop-base, eeh-devprop
Diff to: previous 1.27: preferred, colored
Changes since revision 1.27: +2 -1 lines
Include the space taken by inodes in the count made by lfs_check();
make VOP_SETATTR call lfs_check.  This prevents large numbers of inode
changes (say, at the end of tar(1)) from filling the buffer cache.

Revision 1.24.6.2: download - view: text, markup, annotated - select for diffs
Thu Jan 10 20:05:12 2002 UTC (23 years, 1 month ago) by thorpej
Branches: kqueue
Diff to: previous 1.24.6.1: preferred, colored; branchpoint 1.24: preferred, colored
Changes since revision 1.24.6.1: +5 -1 lines
Sync kqueue branch with -current.

Revision 1.24.2.3: download - view: text, markup, annotated - select for diffs
Tue Jan 8 00:34:52 2002 UTC (23 years, 1 month ago) by nathanw
Branches: nathanw_sa
Diff to: previous 1.24.2.2: preferred, colored; branchpoint 1.24: preferred, colored
Changes since revision 1.24.2.2: +4 -1 lines
Catch up to -current.

Revision 1.27: download - view: text, markup, annotated - select for diffs
Tue Dec 18 07:51:17 2001 UTC (23 years, 2 months ago) by chs
Branches: MAIN
Diff to: previous 1.26: preferred, colored
Changes since revision 1.26: +4 -1 lines
use the new compatibility routines to allow mmap() to work
(in the same non-coherent fashion that it worked pre-UBC)
until someone has time to do it the right way.

Revision 1.25.2.1: download - view: text, markup, annotated - select for diffs
Mon Oct 1 12:48:27 2001 UTC (23 years, 4 months ago) by fvdl
Branches: thorpej-devvp
Diff to: previous 1.25: preferred, colored; next MAIN 1.26: preferred, colored
Changes since revision 1.25: +2 -1 lines
Catch up with -current.

Revision 1.24.2.2: download - view: text, markup, annotated - select for diffs
Fri Sep 21 22:37:06 2001 UTC (23 years, 5 months ago) by nathanw
Branches: nathanw_sa
Diff to: previous 1.24.2.1: preferred, colored; branchpoint 1.24: preferred, colored
Changes since revision 1.24.2.1: +2 -1 lines
Catch up to -current.

Revision 1.26: download - view: text, markup, annotated - select for diffs
Sat Sep 15 16:13:05 2001 UTC (23 years, 5 months ago) by chs
Branches: MAIN
CVS tags: thorpej-mips-cache-base, thorpej-mips-cache, thorpej-devvp-base3, thorpej-devvp-base2, pre-chs-ubcperf, post-chs-ubcperf
Diff to: previous 1.25: preferred, colored
Changes since revision 1.25: +2 -1 lines
add a new VFS op, vfs_reinit, which is called when desiredvnodes is
adjusted via sysctl.  file systems that have hash tables which are
sized based on the value of this variable now resize those hash tables
using the new value.  the max number of FFS softdeps is also recalculated.

convert various file systems to use the <sys/queue.h> macros for
their hash tables.

Revision 1.24.2.1: download - view: text, markup, annotated - select for diffs
Fri Aug 24 00:13:26 2001 UTC (23 years, 6 months ago) by nathanw
Branches: nathanw_sa
Diff to: previous 1.24: preferred, colored
Changes since revision 1.24: +93 -94 lines
Catch up with -current.

Revision 1.24.6.1: download - view: text, markup, annotated - select for diffs
Fri Aug 3 04:14:08 2001 UTC (23 years, 6 months ago) by lukem
Branches: kqueue
Diff to: previous 1.24: preferred, colored
Changes since revision 1.24: +93 -94 lines
update to -current

Revision 1.25: download - view: text, markup, annotated - select for diffs
Fri Jul 13 20:30:23 2001 UTC (23 years, 7 months ago) by perseant
Branches: MAIN
CVS tags: thorpej-devvp-base
Branch point for: thorpej-devvp
Diff to: previous 1.24: preferred, colored
Changes since revision 1.24: +93 -94 lines
Merge the short-lived perseant-lfsv2 branch into the trunk.

Kernels and tools understand both v1 and v2 filesystems; newfs_lfs
generates v2 by default.  Changes for the v2 layout include:

- Segments of non-PO2 size and arbitrary block offset, so these can be
  matched to convenient physical characteristics of the partition (e.g.,
  stripe or track size and offset).

- Address by fragment instead of by disk sector, paving the way for
  non-512-byte-sector devices.  In theory fragments can be as large
  as you like, though in reality they must be smaller than MAXBSIZE in size.

- Use serial number and filesystem identifier to ensure that roll-forward
  doesn't get old data and think it's new.  Roll-forward is enabled for
  v2 filesystems, though not for v1 filesystems by default.

- The inode free list is now a tailq, paving the way for undelete (undelete
  is not yet implemented, but can be without further non-backwards-compatible
  changes to disk structures).

- Inode atime information is kept in the Ifile, instead of on the inode;
  that is, the inode is never written *just* because atime was changed.
  Because of this the inodes remain near the file data on the disk, rather
  than wandering all over as the disk is read repeatedly.  This speeds up
  repeated reads by a small but noticeable amount.

Other changes of note include:

- The ifile written by newfs_lfs can now be of arbitrary length, it is no
  longer restricted to a single indirect block.

- Fixed an old bug where ctime was changed every time a vnode was created.
  I need to look more closely to make sure that the times are only updated
  during write(2) and friends, not after-the-fact during a segment write,
  and certainly not by the cleaner.

Revision 1.24.4.2: download - view: text, markup, annotated - select for diffs
Fri Jun 29 03:56:41 2001 UTC (23 years, 7 months ago) by perseant
Branches: perseant-lfsv2
Diff to: previous 1.24.4.1: preferred, colored; branchpoint 1.24: preferred, colored; next MAIN 1.25: preferred, colored
Changes since revision 1.24.4.1: +92 -93 lines
Get rid of __P(), protoizing where it had not already been done

Revision 1.24.4.1: download - view: text, markup, annotated - select for diffs
Wed Jun 27 03:49:39 2001 UTC (23 years, 7 months ago) by perseant
Branches: perseant-lfsv2
Diff to: previous 1.24: preferred, colored
Changes since revision 1.24: +5 -5 lines
Import of what I've been calling "LFSv2", that is, LFS with some features
added that require changes to the on-disk data structures.  These include:

- 64-bit time in everything but inodes
- User-specified segment offset, and segment size no longer
  restricted to PO2.
- Serial number on segment summaries in addition to timestamp, and
  a new volume identifier, to make roll-forward feasible without
  fear of finding old data and thinking it was new.

Although I think this version works at least as well as what's on the trunk,
we're not done yet; hence this commit is going in on a branch and not on
the trunk.  Enhancements that are not here yet include fragment addressing,
like FFS does, instead of block addressing.

Revision 1.17.4.3: download - view: text, markup, annotated - select for diffs
Sat Feb 3 21:52:03 2001 UTC (24 years ago) by he
Branches: netbsd-1-5
CVS tags: netbsd-1-5-PATCH003, netbsd-1-5-PATCH002, netbsd-1-5-PATCH001
Diff to: previous 1.17.4.2: preferred, colored; branchpoint 1.17: preferred, colored; next MAIN 1.18: preferred, colored
Changes since revision 1.17.4.2: +3 -1 lines
Pull up revision 1.22 (requested by perseant):
  o Close up accounting holes in LFS' accounting of immediately-
    available-space, number of clean segments, and amount of dirty
    space taken up by metadata (PR#11468, PR#11470, PR#11534).

Revision 1.14.2.3: download - view: text, markup, annotated - select for diffs
Fri Dec 8 09:20:14 2000 UTC (24 years, 2 months ago) by bouyer
Branches: thorpej_scsipi
Diff to: previous 1.14.2.2: preferred, colored; branchpoint 1.14: preferred, colored; next MAIN 1.15: preferred, colored
Changes since revision 1.14.2.2: +12 -3 lines
Sync with HEAD.

Revision 1.24: download - view: text, markup, annotated - select for diffs
Sun Dec 3 05:56:27 2000 UTC (24 years, 2 months ago) by perseant
Branches: MAIN
CVS tags: thorpej_scsipi_nbase, thorpej_scsipi_beforemerge, thorpej_scsipi_base, perseant-lfsv2-base
Branch point for: perseant-lfsv2, nathanw_sa, kqueue
Diff to: previous 1.23: preferred, colored
Changes since revision 1.23: +10 -2 lines
Get rid of some old unnecessary code that cleared B_NEEDCOMMIT from buffers in
lfs_writeseg (possibly after they had been freed).

If MALLOCLOG is defined, make lfs_newbuf and lfs_freebuf pass along the
caller's file and line to _malloc and _free.

Revision 1.23: download - view: text, markup, annotated - select for diffs
Sat Nov 25 02:39:35 2000 UTC (24 years, 2 months ago) by perseant
Branches: MAIN
Diff to: previous 1.22: preferred, colored
Changes since revision 1.22: +4 -3 lines
Use u_int32_t instead of u_long to compute LFS checksums, since the
checksum is stored in a u_int32_t.

Revision 1.14.2.2: download - view: text, markup, annotated - select for diffs
Wed Nov 22 16:06:50 2000 UTC (24 years, 3 months ago) by bouyer
Branches: thorpej_scsipi
Diff to: previous 1.14.2.1: preferred, colored; branchpoint 1.14: preferred, colored
Changes since revision 1.14.2.1: +3 -1 lines
Sync with HEAD.

Revision 1.14.2.1: download - view: text, markup, annotated - select for diffs
Mon Nov 20 18:11:49 2000 UTC (24 years, 3 months ago) by bouyer
Branches: thorpej_scsipi
Diff to: previous 1.14: preferred, colored
Changes since revision 1.14: +17 -11 lines
Update thorpej_scsipi to -current as of a month ago

Revision 1.22: download - view: text, markup, annotated - select for diffs
Fri Nov 17 19:14:41 2000 UTC (24 years, 3 months ago) by perseant
Branches: MAIN
Diff to: previous 1.21: preferred, colored
Changes since revision 1.21: +3 -1 lines
Correct accounting of lfs_avail, locked_queue_count, and locked_queue_bytes.
(PR #11468).  In the case of fragment allocation, check to see if enough
space is available before extending a fragment already scheduled for writing.

The locked_queue_* variables indicate the number of buffer headers and bytes,
respectively, that are unavailable to getnewbuf() because they are locked up
waiting for LFS to flush them; make sure that that is actually what we're
counting, i.e., never count malloced buffers, and always use b_bufsize instead
of b_bcount.

If DEBUG is defined, the periodic calls to lfs_countlocked will now complain
if either counter is incorrect.  (In the future lfs_countlocked will not need
to be called at all if DEBUG is not defined.)

Revision 1.17.4.2: download - view: text, markup, annotated - select for diffs
Thu Sep 14 18:50:18 2000 UTC (24 years, 5 months ago) by perseant
Branches: netbsd-1-5
CVS tags: netbsd-1-5-RELEASE, netbsd-1-5-BETA2, netbsd-1-5-BETA
Diff to: previous 1.17.4.1: preferred, colored; branchpoint 1.17: preferred, colored
Changes since revision 1.17.4.1: +12 -3 lines
Pull up recent LFS kernel changes (approved by thorpej):

ufs/ufs/inode.h, 1.20--1.22      (add i_lfs_effnblks extension ;
                                 make ITIMES aware of LFS_ITIMES;
                                 _LKM protection so userland progs
                                 compile)
ufs/ufs/ufs_vnops.c, 1.69, 1.71  (remove IN_ADIROP;
                                 use ITIMES instead of FFS_ITIMES)
ufs/ufs/ufs_readwrite.c, 1.27    (use lfs_reserve in lfs_write)
ufs/lfs/lfs.h, 1.26--1.32        (define LFS_EST_* macros ;
                                 change MIN_FREE_SEGS to lfs_minfreesegs ;
                                 add avail and bfree to CLEANERINFO ;
                                 change lfs_uinodes to signed ;
                                 change lfs_dmeta to signed ;
                                 add whitespace to line up structure
                                 members ;
                                 explicit cast to int32_t in LFS_EST_*
                                 macros)
ufs/lfs/lfs_alloc.c, back out 1.34.2.3 (pullups of 1.39, 1.40);
then pull up         1.38        (clean up on error)
                     1.39--1.43  (restore fvdl's ufs_hashlock fix ;
                                 restore fvdl's ufs_hashlock fix ;
                                 set i_lfs_effnblks ;
                                 use UINO macros ;
                                 add comments and fix long lines)
ufs/lfs/lfs_balloc.c, 1.19       (don't succeed halfway)
                      1.21--1.25 (use i_lfs_effnblks ;
                                 fix i_lfs_effnblks computation and
                                 quieten ;
                                 fix i_ffs_blocks in unwritten fragment ;
                                 remove useless debugging check ;
                                 add comments and (c) 2000)
ufs/lfs/lfs_bio.c, 1.24--1.30    (cleanup and make lfs_flush_fs take
                                   "struct lfs *" instead of "struct
                                 mount *" ;
                                 use lfs_minfreeseg instead of
                                 MIN_FREE_SEGS ;
                                 use UINO macros, and copy bfree/avail
                                   to CLEANERINFO ;
                                 add lfs_reserve function ;
                                 1.28--1.30 fix printf formatting)
ufs/lfs/lfs_cksum.c, 1.13        (add (c) 2000)
ufs/lfs/lfs_debug.c, 1.11        (use btodb instead of DEV_BSIZE)
ufs/lfs/lfs_extern.h, 1.18, 1.20--1.21 (function prototype changes)
ufs/lfs/lfs_inode.c, 1.38        (rewrite lfs_truncate from
                                 ffs_truncate)
                     1.40--1.44  (count written and unwritten blocks
                                   seperately ;
                                 use disk block units instead of bytes ;
                                 remove unnecessary "mod" variable ;
                                 correct B_DELWRI to avoid bawrite panic ;
                                 use lfs_reserve)
ufs/lfs/lfs_segment.c, 1.52-1.59 (use lfs_dmeta to note used summaries ;
                                 check for UNWRITTEN in indirect blocks ;
                                 more debugging stuff inside #ifdef
                                 DEBUG_LFS ;
                                 use LK_CANRECURSE ;
                                 don't drop dirty indirect blocks ;
                                 use UINO macros ;
                                 don't hose the free list ;
                                 use btodb() instead of DEV_BSIZE ;
                                 make it compile again (oops))
ufs/lfs/lfs_subr.c, 1.16--1.17   (check for locked inodes before
                                 changing ;
                                 use btodb() instead of DEV_BSIZE, (c)
                                 2000)
ufs/lfs/lfs_syscalls.c, back out 1.41.4.2 (fvdl's ufs_hashlock fix);
then pull up          1.43       (use lfs_dmeta)
                      1.44--1.45 (restore fvdl's ufs_hashlock fix)
                      1.46--1.47 (fix lfs_avail leakage from sblock
                                 segments ;
                                 use UINO macros)
                      1.49       (bounds-check inode numbers in
                                 lfs_markv)
ufs/lfs/lfs_vfsops.c, 1.53       (use LFS_EST_* macros in lfs_statfs)
                      1.56--1.58 (initialize lfs_minfreeseg, lfs_effnblk ;
                                 initialize lfs_uinodes ;
                                 initialize lfs_ravail)
ufs/lfs/lfs_vnops.c, 1.40        (remove VDIROP from removed files)
                     1.42--1.44  (move SET_ENDOP below the removal of
                                 VDIROP ;
                                 use UINO macros and add lfs_itimes
                                 function ;
                                 use lfs_reserve in dirops)

Revision 1.21: download - view: text, markup, annotated - select for diffs
Sat Sep 9 04:49:55 2000 UTC (24 years, 5 months ago) by perseant
Branches: MAIN
Diff to: previous 1.20: preferred, colored
Changes since revision 1.20: +3 -2 lines
Various bug-fixes to LFS, to wit:


Kernel:

* Add runtime quantity lfs_ravail, the number of disk-blocks reserved
  for writing.  Writes to the filesystem first reserve a maximum amount
  of blocks before their write is allowed to proceed; after the blocks
  are allocated the reserved total is reduced by a corresponding amount.

  If the lfs_reserve function cannot immediately reserve the requested
  number of blocks, the inode is unlocked, and the thread sleeps until
  the cleaner has made enough space available for the blocks to be
  reserved.  In this way large files can be written to the filesystem
  (or, smaller files can be written to a nearly-full but thoroughly
  clean filesystem) and the cleaner can still function properly.

* Remove explicit switching on dlfs_minfreeseg from the kernel code; it
  is now merely a fs-creation parameter used to compute dlfs_avail and
  dlfs_bfree (and used by fsck_lfs(8) to check their accuracy).  Its
  former role is better assumed by a properly computed dlfs_avail.

* Bounds-check inode numbers submitted through lfs_bmapv and lfs_markv.
  This prevents a panic, but, if the cleaner is feeding the filesystem
  the wrong data, you are still in a world of hurt.

* Cleanup: remove explicit references of DEV_BSIZE in favor of
  btodb()/dbtob().

lfs_cleanerd:

* Make -n mean "send N segments' blocks through a single call to
  lfs_markv".  Previously it had meant "clean N segments though N calls
  to lfs_markv, before looking again to see if more need to be cleaned".
  The new behavior gives better packing of direct data on disk with as
  little metadata as possible, largely alleviating the problem that the
  cleaner can consume more disk through inefficient use of metadata than
  it frees by moving dirty data away from clean "holes" to produce
  entirely clean segments.

* Make -b mean "read as many segments as necessary to write N segments
  of dirty data back to disk", rather than its former meaning of "read
  as many segments as necessary to free N segments worth of space".  The
  new meaning, combined with the new -n behavior described above,
  further aids in cleaning storage efficiency as entire segments can be
  written at once, using as few blocks as possible for segment summaries
  and inode blocks.

* Make the cleaner take note of segments which could not be cleaned due
  to error, and not attempt to clean them until they are entirely free
  of dirty blocks.  This prevents the case in which a cleanerd running
  with -n 1 and without -b (formerly the default) would spin trying
  repeatedly to clean a corrupt segment, while the remaining space
  filled and deadlocked the filesystem.

* Update the lfs_cleanerd manual page to describe all the options,
  including the changes mentioned here (in particular, the -b and -n
  flags were previously undocumented).

fsck_lfs:

* Check, and optionally fix, lfs_avail (to an exact figure) and
  lfs_bfree (within a margin of error) in pass 5.

newfs_lfs:

* Reduce the default dlfs_minfreeseg to 1/20 of the total segments.

* Add a warning if the sgs disklabel field is 16 (the default for FFS'
  cpg, but not usually desirable for LFS' sgs: 5--8 is a better range).

* Change the calculation of lfs_avail and lfs_bfree, corresponding to
  the kernel changes mentioned above.

mount_lfs:

* Add -N and -b options to pass corresponding -n and -b options to
  lfs_cleanerd.

* Default to calling lfs_cleanerd with "-b -n 4".


[All of these changes were largely tested in the 1.5 branch, with the
idea that they (along with previous un-pulled-up work) could be applied
to the branch while it was still in ALPHA2; however my test system has
experienced corruption on another filesystem (/dev/console has gone
missing :^), and, while I believe this unrelated to the LFS changes, I
cannot with good conscience request that the changes be pulled up.]

Revision 1.20: download - view: text, markup, annotated - select for diffs
Wed Jul 5 22:25:43 2000 UTC (24 years, 7 months ago) by perseant
Branches: MAIN
Diff to: previous 1.19: preferred, colored
Changes since revision 1.19: +6 -1 lines
Clean up accounting of lfs_uinodes (dirty but unwritten inodes).

Make lfs_uinodes a signed quantity for debugging purposes, and set it to
zero as fs mount time.

Enclose setting/clearing of the dirty flags (IN_MODIFIED, IN_ACCESSED,
IN_CLEANING) in macros, and use those macros everywhere.  Make
LFS_ITIMES use these macros; updated the ITIMES macro in inode.h to know
about this.  Make ufs_getattr use ITIMES instead of FFS_ITIMES.

Revision 1.17.4.1: download - view: text, markup, annotated - select for diffs
Mon Jul 3 18:33:55 2000 UTC (24 years, 7 months ago) by fvdl
Branches: netbsd-1-5
CVS tags: netbsd-1-5-ALPHA2
Diff to: previous 1.17: preferred, colored
Changes since revision 1.17: +2 -2 lines
pullup the fixes from the trunk to not hold ufs_hashlock across
getnewvnode()

Revision 1.19: download - view: text, markup, annotated - select for diffs
Fri Jun 30 20:45:39 2000 UTC (24 years, 7 months ago) by fvdl
Branches: MAIN
Diff to: previous 1.18: preferred, colored
Changes since revision 1.18: +2 -2 lines
Rearrange code around getnewvnode as was already done for ffs, to avoid
locking against oneself because getnewvnode recycles a softdep-using vnode.

Revision 1.18: download - view: text, markup, annotated - select for diffs
Tue Jun 27 20:57:13 2000 UTC (24 years, 7 months ago) by perseant
Branches: MAIN
Diff to: previous 1.17: preferred, colored
Changes since revision 1.17: +5 -2 lines
Fixes associated with filling an LFS:

Change the space computation to appear to change the size of the *disk*
rather than the *bytes used* when more segment summaries and inode
blocks are written.  Try to estimate the amount of space that these will
take up when more files are written, so the disk size doesn't change too
much.

Regularize error returns from lfs_valloc, lfs_balloc, lfs_truncate: they
now fail entirely, rather than succeeding half-way and leaving the fs in
an inconsistent state.

Rewrite lfs_truncate, mostly stealing from ffs_truncate.  The old
lfs_truncate had difficulty truncating a large file to a non-zero size
(indirect blocks were not handled appropriately).

Unmark VDIROP on fvp after ufs_remove, ufs_rmdir, so these can be
reclaimed immediately: this vnode would not be written to disk again
anyway if the removal succeeded, and if it failed, no directory
operation occurred.

ufs_makeinode and ufs_mkdir now remove IN_ADIROP on error.

Revision 1.17: download - view: text, markup, annotated - select for diffs
Thu Mar 16 18:08:33 2000 UTC (24 years, 11 months ago) by jdolecek
Branches: MAIN
CVS tags: netbsd-1-5-base, minoura-xpg4dl-base, minoura-xpg4dl
Branch point for: netbsd-1-5
Diff to: previous 1.16: preferred, colored
Changes since revision 1.16: +3 -2 lines
Add new VFS op routine - vfs_done and call it on filesystem detach
in vfs_detach(). vfs_done may free global filesystem's resources,
typically those allocated in respective filesystem's init function.
Needed so those filesystems which went in via LKM have a chance to
clean after themselves before unloading. This fixes random panics
when LKM for filesystem using pools was loaded and unloaded several
times.

For each leaf filesystem, add appropriate vfs_done routine.

Revision 1.13.2.2: download - view: text, markup, annotated - select for diffs
Thu Jan 20 21:01:33 2000 UTC (25 years, 1 month ago) by he
Branches: netbsd-1-4
CVS tags: netbsd-1-4-PATCH003, netbsd-1-4-PATCH002
Diff to: previous 1.13.2.1: preferred, colored; branchpoint 1.13: preferred, colored; next MAIN 1.14: preferred, colored
Changes since revision 1.13.2.1: +2 -2 lines
Pull up revision 1.16 (requested by perseant):
  Files removed (through unlink, rmdir) are now really removed, though the
  removal is postponed until the dirop is complete to ensure validity of
  the filesystem through a crash.  Use a separate per-fs lock, instead of
  ufs_hashlock, to protect the inode free list.  Change calling semantics
  of lfs_ifind, to give better error reporting:  If fed a struct buf, it
  can report the block number of the offending inode block as well as the
  inode number.

Revision 1.16: download - view: text, markup, annotated - select for diffs
Wed Jan 19 00:03:04 2000 UTC (25 years, 1 month ago) by perseant
Branches: MAIN
CVS tags: chs-ubc2-newbase
Diff to: previous 1.15: preferred, colored
Changes since revision 1.15: +2 -2 lines
Changes to stabilize LFS.  The first two of these should also apply to the
1.4 branch.

* Use a separate per-fs lock, instead of ufs_hashlock, to protect the Inode
  free list.  This seems to prevent the "lockmgr: %d, not exclusive lock holder
  %d, unlocking" message I was mis-attributing last night to an unlocked vnode
  being passed to vrele.

* Change calling semantics of lfs_ifind, to give better error reporting:
  If fed a struct buf, it can report the block number of the offending inode
  block as well as the inode number.

* Back out rev 1.10 of lfs_subr.c, since the replacement code was slightly
  uglier while being functionally identical.

* Make lfs_vunref use the same free list convention as vrele/vput, so that
  vget does not remove vnodes from a hash list they are not on.

Revision 1.14.8.1: download - view: text, markup, annotated - select for diffs
Mon Dec 27 18:36:39 1999 UTC (25 years, 1 month ago) by wrstuden
Branches: wrstuden-devbsize
Diff to: previous 1.14: preferred, colored; next MAIN 1.15: preferred, colored
Changes since revision 1.14: +2 -6 lines
Pull up to last week's -current.

Revision 1.13.2.1: download - view: text, markup, annotated - select for diffs
Fri Dec 17 23:21:30 1999 UTC (25 years, 2 months ago) by he
Branches: netbsd-1-4
Diff to: previous 1.13: preferred, colored
Changes since revision 1.13: +2 -1 lines
Pull up revision 1.14 (requested by perseant):
  Avoid flushing vnodes involved in a dirop, making lfs' promise
  of "no fsck needed, even in the event of a crash" closer to
  reality.

Revision 1.15: download - view: text, markup, annotated - select for diffs
Mon Nov 15 18:49:14 1999 UTC (25 years, 3 months ago) by fvdl
Branches: MAIN
CVS tags: wrstuden-devbsize-base, wrstuden-devbsize-19991221
Diff to: previous 1.14: preferred, colored
Changes since revision 1.14: +2 -6 lines
Add Kirk McKusick's soft updates code to the trunk. Not enabled by
default, as the copyright on the main file (ffs_softdep.c) is such
that is has been put into gnusrc. options SOFTDEP will pull this
in. This code also contains the trickle syncer.

Bump version number to 1.4O

Revision 1.14.4.1: download - view: text, markup, annotated - select for diffs
Tue Oct 19 12:50:42 1999 UTC (25 years, 4 months ago) by fvdl
Branches: fvdl-softdep
Diff to: previous 1.14: preferred, colored; next MAIN 1.15: preferred, colored
Changes since revision 1.14: +2 -6 lines
Bring in Kirk McKusick's FFS softdep code on a branch.

Revision 1.13.4.3: download - view: text, markup, annotated - select for diffs
Tue Aug 31 21:03:46 1999 UTC (25 years, 5 months ago) by perseant
Branches: chs-ubc2
Diff to: previous 1.13.4.2: preferred, colored; branchpoint 1.13: preferred, colored; next MAIN 1.14: preferred, colored
Changes since revision 1.13.4.2: +7 -4 lines
Rudimentary support for LFS under UBC:

- LFS-specific VOP_BALLOC and VOP_PUTPAGES vnode ops.

- getblk VREG panic #ifdef'd out (can be reinstated when Ifile is
  internalized and Ifile can be made another type from VREG)

- interface to VOP_PUTPAGES changed to pass all pager flags, not
  just sync.  FS putpages routines must know about the pager flags.

- new LFS magic disk address, -2 ("unwritten"), meaning accounted for
  but not assigned to a fixed disk location (since LFS does these two
  things separately, and the previous accounting method using buffer
  headers no longer will work).  Changed references to (foo == (daddr_t)-1)
  to (foo < 0).  Since disk drivers reject all addresses < 0, this should
  not present a problem for other FSs.

Revision 1.13.4.2: download - view: text, markup, annotated - select for diffs
Sun Jul 11 05:52:10 1999 UTC (25 years, 7 months ago) by chs
Branches: chs-ubc2
Diff to: previous 1.13.4.1: preferred, colored; branchpoint 1.13: preferred, colored
Changes since revision 1.13.4.1: +4 -1 lines
add placeholders for getpages/putpages.

Revision 1.13.4.1: download - view: text, markup, annotated - select for diffs
Mon Jun 21 01:31:09 1999 UTC (25 years, 8 months ago) by thorpej
Branches: chs-ubc2
Diff to: previous 1.13: preferred, colored
Changes since revision 1.13: +2 -1 lines
Sync w/ -current.

Revision 1.14: download - view: text, markup, annotated - select for diffs
Tue Jun 1 03:00:40 1999 UTC (25 years, 8 months ago) by perseant
Branches: MAIN
CVS tags: fvdl-softdep-base, comdex-fall-1999-base, comdex-fall-1999, chs-ubc2-base
Branch point for: wrstuden-devbsize, thorpej_scsipi, fvdl-softdep
Diff to: previous 1.13: preferred, colored
Changes since revision 1.13: +2 -1 lines
Fixed lfs_update (and related functions) so that calls from lfs_fsync
will DTRT with vnodes marked VDIROP.  In particular, the message
"flushing VDIROP" will no longer appear, and the filesystem will remain
stable in the event of a crash.

This was particularly a problem with NFS-exported LFSes, since fsync
was called on every file close.

Revision 1.13: download - view: text, markup, annotated - select for diffs
Wed Mar 10 00:20:00 1999 UTC (25 years, 11 months ago) by perseant
Branches: MAIN
CVS tags: netbsd-1-4-base, netbsd-1-4-RELEASE, netbsd-1-4-PATCH001, kame_14_19990705, kame_14_19990628, kame_141_19991130, kame
Branch point for: netbsd-1-4, chs-ubc2
Diff to: previous 1.12: preferred, colored
Changes since revision 1.12: +67 -8 lines
New sources should leave the LFS in a more-or-less working state.  Changes
include:

	- DIROP segregation is enabled, and greater care is taken
	  to make sure that a checkpoint completes.  Fsck is not
	  needed to remount the filesystem.
	- Several checks to make sure that the LFS subsystem does not
	  overuse various resources (memory, in particular).
	- The cleaner routines, lfs_markv in particular, are completely
	  rewritten.  A buffer overflow is removed.  Greater care is taken
	  to ensure that inodes come from where lfs_cleanerd say they come
	  from (so we know nothing has changed since lfs_bmapv was called).
	- Fragment allocation is fixed, so that writes beyond end-of-file
	  do the right thing.

Revision 1.12: download - view: text, markup, annotated - select for diffs
Fri Feb 26 23:44:49 1999 UTC (25 years, 11 months ago) by wrstuden
Branches: MAIN
Diff to: previous 1.11: preferred, colored
Changes since revision 1.11: +2 -2 lines
Modify vfsops to seperate vfs_fhtovp() into two routines. vfs_fhtovp() now
only handles the file handle to vnode conversion, and a new call,
vfs_checkexp(), performs the export verification.

Revision 1.11: download - view: text, markup, annotated - select for diffs
Fri Sep 11 21:27:12 1998 UTC (26 years, 5 months ago) by pk
Branches: MAIN
CVS tags: kenh-if-detach-base, kenh-if-detach, chs-ubc-base, chs-ubc
Diff to: previous 1.10: preferred, colored
Changes since revision 1.10: +2 -1 lines
PR#6032: define fixed sized on-disk superblock structure.

Revision 1.10: download - view: text, markup, annotated - select for diffs
Tue Sep 1 03:26:05 1998 UTC (26 years, 5 months ago) by thorpej
Branches: MAIN
Diff to: previous 1.9: preferred, colored
Changes since revision 1.9: +3 -1 lines
Use the pool allocator and the "nointr" pool page allocator for LFS inodes.

Revision 1.9: download - view: text, markup, annotated - select for diffs
Wed Jun 24 20:58:48 1998 UTC (26 years, 8 months ago) by sommerfe
Branches: MAIN
CVS tags: eeh-paddr_t-base, eeh-paddr_t
Diff to: previous 1.8: preferred, colored
Changes since revision 1.8: +2 -8 lines
Always include fifos; "not an option any more".

Revision 1.8: download - view: text, markup, annotated - select for diffs
Mon Jun 22 22:01:09 1998 UTC (26 years, 8 months ago) by sommerfe
Branches: MAIN
Diff to: previous 1.7: preferred, colored
Changes since revision 1.7: +3 -1 lines
defopt for options FIFO

Revision 1.7: download - view: text, markup, annotated - select for diffs
Sun Mar 1 02:23:24 1998 UTC (26 years, 11 months ago) by fvdl
Branches: MAIN
Diff to: previous 1.6: preferred, colored
Changes since revision 1.6: +10 -7 lines
Merge with Lite2 + local changes

Revision 1.1.1.2 (vendor branch): download - view: text, markup, annotated - select for diffs
Sun Mar 1 02:14:12 1998 UTC (26 years, 11 months ago) by fvdl
Branches: netbsd, CSRG
CVS tags: lite-2
Diff to: previous 1.1.1.1: preferred, colored
Changes since revision 1.1.1.1: +9 -5 lines
Import 4.4BSD-Lite2

Revision 1.1.1.1 (vendor branch): download - view: text, markup, annotated - select for diffs
Sun Mar 1 02:10:48 1998 UTC (26 years, 11 months ago) by fvdl
Branches: netbsd, CSRG
CVS tags: lite-1, date-03-may-96
Diff to: previous 1.1: preferred, colored
Changes since revision 1.1: +1 -3 lines
Import 4.4BSD-Lite for reference

Revision 1.6: download - view: text, markup, annotated - select for diffs
Sun Dec 22 10:10:42 1996 UTC (28 years, 2 months ago) by cgd
Branches: MAIN
CVS tags: thorpej-signal-base, thorpej-signal, thorpej-setroot, netbsd-1-3-base, netbsd-1-3-RELEASE, netbsd-1-3-PATCH003-CANDIDATE2, netbsd-1-3-PATCH003-CANDIDATE1, netbsd-1-3-PATCH003-CANDIDATE0, netbsd-1-3-PATCH003, netbsd-1-3-PATCH002, netbsd-1-3-PATCH001, netbsd-1-3-BETA, netbsd-1-3, mrg-vm-swap, marc-pcmcia-bp, marc-pcmcia-base, marc-pcmcia, is-newarp-before-merge, is-newarp-base, is-newarp, bouyer-scsipi
Diff to: previous 1.5: preferred, colored
Changes since revision 1.5: +2 -2 lines
Change the second and third args to struct vfsops' (*vfs_mount)() to
'const char *', and 'void *', respectively.  The second arg is taken directly
from user arguments, and is const there, so must be const in the prototypes
and functions.  The third arg is also taken directly from user arguments.
It doesn't have to be changed, but since it's cleaner to keep the type
the same as the user arg's type, and I'm already making the 'const char *'
change...

Revision 1.5: download - view: text, markup, annotated - select for diffs
Mon Feb 12 15:20:12 1996 UTC (29 years ago) by christos
Branches: MAIN
CVS tags: netbsd-1-2-base, netbsd-1-2-RELEASE, netbsd-1-2-PATCH001, netbsd-1-2-BETA, netbsd-1-2
Diff to: previous 1.4: preferred, colored
Changes since revision 1.4: +2 -1 lines
Add fwd declaration for struct ucred

Revision 1.4: download - view: text, markup, annotated - select for diffs
Fri Feb 9 22:28:51 1996 UTC (29 years ago) by christos
Branches: MAIN
Diff to: previous 1.3: preferred, colored
Changes since revision 1.3: +97 -54 lines
lfs prototypes

Revision 1.3: download - view: text, markup, annotated - select for diffs
Wed Dec 14 13:03:47 1994 UTC (30 years, 2 months ago) by mycroft
Branches: MAIN
CVS tags: netbsd-1-1-base, netbsd-1-1-RELEASE, netbsd-1-1-PATCH001, netbsd-1-1
Diff to: previous 1.2: preferred, colored
Changes since revision 1.2: +2 -2 lines
Sync with CSRG.

Revision 1.2: download - view: text, markup, annotated - select for diffs
Wed Jun 29 06:46:55 1994 UTC (30 years, 7 months ago) by cgd
Branches: MAIN
CVS tags: netbsd-1-0-base, netbsd-1-0-RELEASE, netbsd-1-0-PATCH1, netbsd-1-0-PATCH06, netbsd-1-0-PATCH05, netbsd-1-0-PATCH04, netbsd-1-0-PATCH03, netbsd-1-0-PATCH02, netbsd-1-0-PATCH0, netbsd-1-0
Diff to: previous 1.1: preferred, colored
Changes since revision 1.1: +3 -2 lines
New RCS ID's, take two.  they're more aesthecially pleasant, and use 'NetBSD'

Revision 1.1: download - view: text, markup, annotated - select for diffs
Wed Jun 8 11:42:33 1994 UTC (30 years, 8 months ago) by mycroft
Branches: MAIN
Update to 4.4-Lite fs code, with local changes.

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