CVS log for src/sys/fs/hfs/Attic/hfs_nhash.c

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Keyword substitution: kv
Default branch: MAIN

Rebase to HEAD as of a few days ago.

Change hfs from hashlist to vcache.
- use (cnid, fork) as key.
- use pool for hfs nodes.

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

The current implementation of vn_lock() is racy.  Modification of
the vnode operations vector for active vnodes is unsafe because it
is not known whether deadfs or the original file system will be
called.

- Pass down LK_RETRY to the lock operation (hint for deadfs only).

- Change deadfs lock operation to return ENOENT if LK_RETRY is unset.

- Change all other lock operations to check for dead vnode once
  the vnode is locked and unlock and return ENOENT in this case.

With these changes in place vnode lock operations will never succeed
after vclean() has marked the vnode as VI_XLOCK and before vclean()
has changed the operations vector.

Adresses PR kern/37706 (Forced unmount of file systems is unsafe)

Discussed on tech-kern.

Welcome to 6.99.33

Catchup with rmind-uvmplock merge.

Welcome to 5.99.53!  Merge rmind-uvmplock branch:

- Reorganize locking in UVM and provide extra serialisation for pmap(9).
  New lock order: [vmpage-owner-lock] -> pmap-lock.

- Simplify locking in some pmap(9) modules by removing P->V locking.

- Use lock object on vmobjlock (and thus vnode_t::v_interlock) to share
  the locks amongst UVM objects where necessary (tmpfs, layerfs, unionfs).

- Rewrite and optimise x86 TLB shootdown code, make it simpler and cleaner.
  Add TLBSTATS option for x86 to collect statistics about TLB shootdowns.

- Unify /dev/mem et al in MI code and provide required locking (removes
  kernel-lock on some ports).  Also, avoid cache-aliasing issues.

Thanks to Andrew Doran and Joerg Sonnenberger, as their initial patches
formed the core changes of this branch.

sync with head

Sync with HEAD.

sync with head.

Make holding v_interlock mandatory for callers of vget().

Announced some time ago on tech-kern.

sync with head

Remove vlockmgr().  Generic vnode lock operations now use a rwlock located
in the vnode.  All LK_* flags move from sys/lock.h to sys/vnode.h.  Calls
to vlockmgr() in file systems get replaced with VOP_LOCK() or VOP_UNLOCK().

Welcome to 5.99.34.

Discussed on tech-kern.

Change struct uvm_object::vmobjlock to be dynamically allocated with
mutex_obj_alloc().  It allows us to share the locks among UVM objects.

sync with head.

Sync with HEAD.

Sync with HEAD.

Sync with wrstuden-revivesa-base-2.

Don't use unnamed structures.

Sync with HEAD.

sync with head.

sync with head.

- Convert hashinit() to use kmem_alloc(). The hash tables can be large
  and it's better to not have them in kmem_map.
- Convert a couple of minor items along the way to kmem_alloc().
- Fix some memory leaks.

sync with HEAD

Sync with HEAD.

sync with head.

Replace struct lock on vnodes with a simpler lock object built on
krwlock_t. This is a step towards removing lockmgr and simplifying
vnode locking. Discussed on tech-kern.

- Fix probelms with inode hash: make MPSAFE, don't allocate with held locks.
- Replace use of lockmgr().

sync with head

sync with HEAD

Sync with HEAD

Start detangling lock.h from intr.h. This is likely to cause short term
breakage, but the mess of dependencies has been regularly breaking the
build recently anyhow.

Sync with HEAD

Merge vmlocking2 to head.

Sync with head.

Sync with HEAD

sync with head.

use __KERNEL_RCSID()

Pull the vmlocking changes into a new branch.

sync with head.

Compile fixes.

Sync with HEAD (missed new files in previous).

file hfs_nhash.c was added on branch yamt-lazymbuf on 2007-09-03 14:40:20 +0000

file hfs_nhash.c was added on branch yamt-idlelwp on 2007-03-12 06:14:52 +0000

Complete rename of hfsp to hfs, requested by thorpej.

Rename files from hfsp to hfs.