CVS log for src/sys/kern/vfs_init.c

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Keyword substitution: kv
Default branch: MAIN

Repply this change with a couple of bugs fixed:

- Do away with separate pool_cache for some kernel objects that have no special
  requirements and use the general purpose allocator instead. On one of my
  test systems this makes for a small (~1%) but repeatable reduction in system
  time during builds presumably because it decreases the kernel's cache /
  memory bandwidth footprint a little.
- vfs_lockf: cache a pointer to the uidinfo and put mutex in the data segment.

Back out recent change to replace pool_cache with then general allocator.
Will return to this when I have time again.

- Do away with separate pool_cache for some kernel objects that have no special
  requirements and use the general purpose allocator instead.  On one of my
  test systems this makes for a small (~1%) but repeatable reduction in system
  time during builds presumably because it decreases the kernel's cache /
  memory bandwidth footprint a little.
- vfs_lockf: cache a pointer to the uidinfo and put mutex in the data segment.

vfs(9): Move SDT_PROVIDER_DEFINE(vfs) from vfs_cache.c to vfs_init.c.

Not a namecache-specific thing.

kern/vfs_init.c: Sort includes.  No functional change intended.

kern/vfs_init.c: extern vfs_op_descs got rehomed in sys/vnode.h.

miscfs/fifofs/fifo.h: New home for extern fifo_vnodeop_opv_desc.

Add include guard and fix missing includes while here too.

miscfs/specfs/specdev.h: New home for extern spec_vnodeop_opv_desc.

Also use it for extern spec_vnodeop_p, which is already there.

miscfs/deadfs/deadfs.h: New home for deadfs-related externs.

XXX regen sys/kern/vnode_if.c and the others

sys/mount.h: New home for vfs_timestamp_precision, vfs_magiclinks.

Add inline functions to manipulate the klists that link up knotes
via kn_selnext:

- klist_init()
- klist_fini()
- klist_insert()
- klist_remove()

These provide some API insulation from the implementation details of these
lists (but not completely; see vn_knote_attach() and vn_knote_detach()).
Currently just a wrapper around SLIST(9).

This will make it significantly easier to switch kn_selnext linkage
to a different kind of list.

Fix the locking around EVFILT_FS.  Previously, the code would walk the
fs_klist and take the kqueue_misc_lock inside the event callback.
However, that list can be modified by the attach and detach callbacks,
which could result in the walker stepping right off a cliff.

Instead, we give the fs_klist it's own lock, and hold it while we
call knote(), using the NOTE_SUBMIT protocol.  Also, fs_filtops
into vfs_syscalls.c so all of the locking logic is contained in one
file (there is precedence with sig_filtops).  fs_filtops is now marked
MPSAFE.

Sync with HEAD.

introduce vfs.generic.timestamp_precision sysctl to control precision
of the timer used for vfs_timestamp(); default stays the same
to use nanotime(9), but option is there to use the faster, albeit
less precise methods

code taken from FreeBSD

suggested by Mateusz Guzik in:
http://mail-index.netbsd.org/tech-kern/2020/07/19/msg026620.html

Add ACL support for FFS. From FreeBSD.

Merge changes from current as of 20200406

Sync with head.

Explicitly cast pointers to uintptr_t before casting to enums. They are
not necessarily the same size. Don't cast pointers to bool, check for
NULL instead.

Sync with HEAD

Move pnbuf_cache into vfs_init.c, where it belongs.

update from HEAD

Sync with HEAD

Remove miscfs/syncfs and

- move the syncer into kern/vfs_subr.c.

- change the syncer to process the mountlist and VFS_SYNC as appropriate.

- use an API for mount points similiar to the API for vnodes:
  - vfs_syncer_add_to_worklist(struct mount *mp) to add
  - vfs_syncer_remove_from_worklist(struct mount *mp) to remove a mount.

No objections on tech-kern@

Rebase to HEAD as of a few days ago.

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")

sync with head

Ensure that the top level sysctl nodes (kern, vfs, net, ...) exist before
the sysctl link sets are processed, and remove redundancy.

Shaves >13kB off of an amd64 GENERIC, not to mention >1k duplicate
lines of code.

sync with head

sync to latest -current.

Replace the remaining KAUTH_GENERIC_ISSUSER authorization calls with
something meaningful. All relevant documentation has been updated or
written.

Most of these changes were brought up in the following messages:

    http://mail-index.netbsd.org/tech-kern/2012/01/18/msg012490.html
    http://mail-index.netbsd.org/tech-kern/2012/01/19/msg012502.html
    http://mail-index.netbsd.org/tech-kern/2012/02/17/msg012728.html

Thanks to christos, manu, njoly, and jmmv for input.

Huge thanks to pgoyette for spinning these changes through some build
cycles and ATF.

sync with head

- Add usermount_common_policy() that implements some common (everything
  but access control) user mounting policies: enforced MNT_NOSUID and
  MNT_NODEV, no MNT_EXPORT, MNT_EXEC propagation. This can be useful for
  secmodels that are interested in simply adding finer grained user mount
  support.

- Add a mount subsystem listener for KAUTH_REQ_SYSTEM_MOUNT_GET.

Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.

sync with head.

Move dovfsusermount to secmodel_bsd44, where it really belongs.

The secmodel code now creates the same knob in two places: both under the
secmodel itself, as well as the widely known location.

Mailing list references:

    http://mail-index.netbsd.org/source-changes/2009/05/02/msg220641.html
    http://mail-index.netbsd.org/tech-kern/2009/05/03/msg005015.html

Sync with HEAD.

Sync with HEAD.

malloc -> kmem_alloc.

Update haad-dm branch to haad-dm-base2.

Move some sysctl node creations away from linksets and into the
constructors for subsystems.

XXX: CTLFLAG_PERMANENT is non-sensible.

Sync with HEAD.

Sync with HEAD.

Sync with HEAD.

Add generic FS agnostic directory hashing support. Currently only in use by
UDF. Future users could be msdosfs, ufs, nilfs2 (when ready), cd9660 etc.

Note that its not the same as UFS's DIRHASH support; UFS would need a good
cleanup/splitout of directory operations to adopt to this new directory
hashing support since most directory operations are interweaved with the
vnops itself. This is a TODO.

Sync w/ -current. 34 merge conflicts to follow.

Sync with HEAD.

sync with head.

sync with head.

Convert file systems to dynamically attach with the new module interface.
Make VFS hooks dynamic while we're here and say farewell to VFS_ATTACH and
VFS_HOOKS_ATTACH linksets.

As a consequence, most of the file systems can now be loaded as new style
modules.

Quick sanity check by ad@.

Ensure that there is always a link_set_vfsops, until we kill VFS_ATTACH().

Remove clause 3 and 4 from TNF licenses

sync with HEAD

Sync with HEAD.

sync with head

Sync with HEAD

Pull in my modules code for review/test/hacking.

Sync with HEAD.

sync with head.

Sync with HEAD

Sync with HEAD.

sync with -HEAD

Merge from vmlocking:

- pool_cache changes.
- Debugger/procfs locking fixes.
- Other minor changes.

sync with HEAD

sync with head.

Sync with HEAD.

Follow the merge of pmap.c on i386 and amd64 and move
pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup
code to restore CR4 before jumping back into kernel space as the large
page option might cover that.

sync with head.

Merge from vmlocking:

- Split vnode::v_flag into three fields, depending on field locking.
- simple_lock -> kmutex in a few places.
- Fix some simple locking problems.

sync with head.

Update for pool_cache API changes.

Sync with HEAD.

Sync with HEAD.

Move vfs_attach(), vfs_detach() and vfs_reinit() from vfs_subr.c
to vfs_init.c.  This permits easier standalone compilation of these
routines.

file vfs_init.c was added on branch matt-mips64 on 2007-07-27 14:25:22 +0000

Move vfs_attach(), vfs_detach() and vfs_reinit() from vfs_subr.c
to vfs_init.c.  This permits easier standalone compilation of these
routines.

sync with head.

Sync with head.

Pass an ipl argument to pool_init/POOL_INIT to be used when initializing
the pool's lock.

sync with head.

Sync with head.

remove some __unused from function parameters.

sync with head

- sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386

sync with head.

changes for making DIAGNOSTIC not change the kernel ABI:
 - for structure fields that are conditionally present,
   make those fields always present.
 - for functions which are conditionally inline, make them never inline.
 - remove some other functions which are conditionally defined but
   don't actually do anything anymore.
 - make a lock-debugging function conditional on only LOCKDEBUG.

as discussed on tech-kern some time back.

merge ktrace-lwp.

Sync with HEAD. Here we go again...

Use ANSI function decls.

sync with -current

Sync with HEAD.

- Define a VFS_ATTACH() macro that places a reference to a vfsops structure
  into the "vfsops" link set.
- Use VFS_ATTACH() where vfsops are declared for individual file systems.
- In vfsinit(), traverse the "vfsops" link set, rather than vfs_list_initial[].

sync with head.  xen and whitespace.  xen part is not finished.

Sync with HEAD.

Hi Perry!

nuke trailing whitespace

Fix the sync with head I botched.

Sync with HEAD.

Sync with HEAD

Nuke __P().

Move UCB-licensed code from 4-clause to 3-clause licence.

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

Typos in comments.

Catch up to -current.

sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work

Overhaul the way parent attachments are specified; instead of using
a vector of indices into the cfdata table to specify potential parents,
record the interface attributes that devices have and add a new "parent
spec" structure which lists the iattr, as well as optionally listing
specific parent device instances.

See:

    http://mail-index.netbsd.org/tech-kern/2002/09/25/0014.html

...for a detailed description.

While here, const poison some things, as suggested by Matt Thomas.

Catch up to -current.
(CVS: It's not just a program. It's an adventure!)

Catch up with -current.

Pool deals fairly well with physical memory shortage, but it doesn't
deal with shortages of the VM maps where the backing pages are mapped
(usually kmem_map).  Try to deal with this:

* Group all information about the backend allocator for a pool in a
  separate structure.  The pool references this structure, rather than
  the individual fields.
* Change the pool_init() API accordingly, and adjust all callers.
* Link all pools using the same backend allocator on a list.
* The backend allocator is responsible for waiting for physical memory
  to become available, but will still fail if it cannot callocate KVA
  space for the pages.  If this happens, carefully drain all pools using
  the same backend allocator, so that some KVA space can be freed.
* Change pool_reclaim() to indicate if it actually succeeded in freeing
  some pages, and use that information to make draining easier and more
  efficient.
* Get rid of PR_URGENT.  There was only one use of it, and it could be
  dealt with by the caller.

From art@openbsd.org.

Sync kqueue branch with -current.

Catch up to -current.

Sync the thorpej-mips-cache branch with -current.

add RCSIDs

Catch up to -current.

Use a pool cache for namei buffers -- it's faster to allocate from
a pool cache than a pool.

Sync with HEAD.

make filesystem vnodeop, specop, fifoop and vnodeopv_* arrays const

rename vfs_op_init() to vfs_op_check() and make it only check the offsets
and number of ops, not touch anything - vnode_if.sh now generated
proper offset numbers; vfs_op_check() is only defined and called for DEBUG
kernels

constify extern declaration of vfs_op_descs[]
g/c vfs_opv_numops, use VNODE_OPS_COUNT instead
make vfs_opv_init_explicit() and vfs_opv_init_default() static

Update thorpej_scsipi to -current as of a month ago

Convert namei pathname buffer allocation to use the pool allocator.

Pull up to last week's -current.

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

Bring in Kirk McKusick's FFS softdep code on a branch.

Abolition of bcopy, ovbcopy, bcmp, and bzero, phase one.
  bcopy(x, y, z) ->  memcpy(y, x, z)
ovbcopy(x, y, z) -> memmove(y, x, z)
   bcmp(x, y, z) ->  memcmp(x, y, z)
  bzero(x, y)    ->  memset(x, 0, y)

Always include fifos; "not an option any more".

defopt for options FIFO

add missing int to typedef

Merge with Lite2 + local changes

Import 4.4BSD-Lite2

Import 4.4BSD-Lite for reference

Change vfs_opv_init_explicit() to not allocate the vnode operations
vectors; defer that to vfs_opv_init().

Change the interface to vfs_opv_init() and export it; it now takes a
pointer to an array of vnodeopv_desc *'s to initialize.  Allocate
the vnode operations vectors here.  Called by vfs_attach().

Implement vfs_opv_free(), which deallocates the vnode operations
vectors.  Called by vfs_detach().

Change vfsinit() to build the initial vfs_list by traversing the
vfs_list_inital[] table, and vfs_attach()'ing those file systems.
Also, initialize special vnodeopv_descs (dead, fifo, spec) which
are not associated with any particular file system.

backout previous kprintf change

printf -> kprintf, sprintf -> ksprintf

More proto fixes

First pass at prototyping

Use %p.

from trunk

Clean this up a bit, and separate parts of vfs_opv_init() into separate
functions.

New RCS ID's, take two.  they're more aesthecially pleasant, and use 'NetBSD'

Update to 4.4-Lite fs code.