CVS log for src/external/cddl/osnet/dist/uts/common/fs/zfs/zfs_znode.c

Up to [cvs.NetBSD.org] / src / external / cddl / osnet / dist / uts / common / fs / zfs

Request diff between arbitrary revisions

Keyword substitution: kv
Default branch: MAIN

Enable NCLOOKUP for ZFS.

Pull up following revision(s) (requested by hannken in ticket #897):

	external/cddl/osnet/dist/uts/common/fs/zfs/zfs_znode.c: revision 1.33
	external/cddl/osnet/dist/uts/common/fs/zfs/zfs_vnops.c: revision 1.65

Revert Rev. 1.63 and add a comment why we have to zil_commit() here:

Operation zfs_znode.c::zfs_zget_cleaner() depends on this
zil_commit() as a barrier to guarantee the znode cannot
get freed before its log entries are resolved.

Operation zfs_zget_cleaner() cannot fail, comment and add assertions.

Operation zfs_zget_cleaner() cannot fail, comment and add assertions.

Revert Rev. 1.31 as it is no longer possible for the handle to be NULL.

Mostly merge changes from HEAD upto 20200411

With zfs_netbsd_reclaim() no longer doing an unconditional
zil commit dmu_buf_get_user() may return a NULL handle when
the znode already disappeared.

UVM locking changes, proposed on tech-kern:

- Change the lock on uvm_object, vm_amap and vm_anon to be a RW lock.
- Break v_interlock and vmobjlock apart.  v_interlock remains a mutex.
- Do partial PV list locking in the x86 pmap.  Others to follow later.

Unmap pages when zfs_rezget() re-establishes a znode with its dbufs.

Sync with HEAD

Add missing part of kmem_cache cleanup.  Use Solaris argument order for
kmem_cache destructors, umem_cache_alloc() and umem_cache_free() too.

Update the kmem_cache emulation to run its callbacks with
Solaris argument order.

No functional change intended.

Add support for fifos, character and block devices.

Prepare the implementation of the ZFS control directory ".zfs".

- Move the stub routines from zfs_stub.c to zfs_ctldir.c and
  remove now empty file zfs_stub.c

- Add stub routines for zfsctl_loadvnode() to initialize control
  nodes and zfsctl_snapshot() to retrieve ".zfs/snapshot".

- Add an initial vnode operations vector for control nodes.

- Implement lookup into ".zfs" and lookup ".." from ".zfs/snapshot/<snap>".

- Change nodeid of mounted snapshots to the snapshot object id.

- Respect "-u" flag to "zfs rename <snapshot> ...".

Synch with HEAD

Cannot hold zfs object across call to vcache_get() as it might
deadlock with another reclaim.

Add vfs operation zfs_newvnode() to create a new zfs node and
hold the zfs object in zfs_loadvnode() and zfs_newvnode() only.

Sync with HEAD, resolve a few conflicts

Add missing ZFS_OBJ_HOLD_ENTER() / ZFS_OBJ_HOLD_EXIT() to zfs_zget_cleaner().

Add missing sa_buf_rele() into zfs_zget_cleaner().

Sync with HEAD

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

Initialize z_lockf for new znodes.

Ok: Chuck Silvers

Sync with HEAD

merge a new version of the CDDL dtrace and ZFS code.
this changes the upstream vendor from OpenSolaris to FreeBSD,
and this version is based on FreeBSD svn r315983.

in addition to the 10 years of improvements from upstream,
this version also has these NetBSD-specific enhancements:
 - dtrace FBT probes can now be placed in kernel modules.
 - ZFS now supports mmap().

import new CDDL dtrace and ZFS code from FreeBSD svn r315983.

Remove now obsolete operation vcache_remove().

Welcome to 7.99.36

Change zfs to vcache.
- zfs_loadvnode() is based on zfs_zget() plus zfs_znode_alloc().

Remove vnode creation from zfs_create_fs() and zfs_create_share_dir()
as a vnode is not needed here.

Inspired by FreeBSD r253603.

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")

kill sprintf

NetBSD does not have vn_in_dnlc

Don't forget to destroy the mutex we created to the zfsvfs transient object,
otherwise if we load and unload the module the lockdebug code will blow chunks.

Resync to 2012-11-19 00:00:00 UTC

sync with head

Fix various issues in zfs life cycle, locking, and vop protocol.

- Restore some zfs locking and unlocking that got lost randomly.

- Enable use of the BSD vnode lock.  Lock order: all BSD vnode locks
are taken before all zfs internal locks.  There remains an issue with
O_EXCL, to be solved later (famous last words).  KASSERT the locking
scheme up the wazoo.

- Take our cruft out of zfs_lookup and move it to zfs_netbsd_lookup.
Restore much of the way zfs_lookup looked to make merging future
versions easier.  Disable use of the namecache for now because its
locking dance is too scary to contemplate.

- Implement BSD semantics for rename, to appease our tests.  This is
a provisional kludge; eventually we need VOP_RENAME to take a flag
specifying whether to use BSD semantics or POSIX semantics.

- Simplify zfs_netbsd_reclaim and make it work.  Now that getnewvnode
never tries to vclean anything itself, we need not worry about
recursion of ZFS_OBJ_MUTEX locks.

- Clarify and fix genfs node initialization and destruction.

zfs passes most of our atf vfs tests now, including the rename races.

Still to do:

- fix the impedance mismatch between our permissions model and zfs's;
- fix O_EXCL (nontrivial);
- throw dirconc at it and see how badly it explodes;
- find why zpool sometimes wedges itself during mkfs; and
- find why pool caches sometimes seem to get corrupted.

sync with head

enough with the compile time warnings.

Catchup with rmind-uvmplock merge.

Fix ZFS build.

pass in correct variable, the old code can't possibly be correct.

Make holding v_interlock mandatory for callers of vget().

Announced some time ago on tech-kern.

Clean up vnode lock operations pass 2:

VOP_UNLOCK(vp, flags) -> VOP_UNLOCK(vp): Remove the unneeded flags argument.

Welcome to 5.99.32.

Discussed on tech-kern.

Get new vnode when creating zfs share dir for it's znode.

Merge NetBSD local changes to new zfs version 22 sources.

Import new Opensolaris sources for zfs/dtrace.

Opensolaris mercurial changeset: 11751:58c0c8f4305f

Replace VATTR_NULL() with vattr_null(). The ZFS module can be loaded
again now.

Make this build.

Add workaround about zfs vnode reclaiming deadlock by checking if we don't
ehld ZFS_MUTEX_OBJ already. If we can lock OBJ_MUTEX deffer execution of
zfs_zinactive to taskq. Code was inspired by FreeBSD zfs_freebsd_reclaim.

XXX. This needs to be fixed after finding final solution for vnode lifecycle.

Add NetBSD specific changes to OpenSolaris code. These changes were made
by Andrew Doran and me. Thank you Andrew for your great help.

Oked by core@ and ad@.

Import Opensolaris source code used with zfs port. Zfs code si from date 
200811.

Initial revision