CVS commit: [netbsd-5] src/sys/ufs/ffs

[Soren Jacobsen <snj%netbsd.org@localhost>]

Module Name:    src
Committed By:   snj
Date:           Sat Apr  4 17:27:16 UTC 2009

Modified Files:
        src/sys/ufs/ffs [netbsd-5]: ffs_vnops.c

Log Message:
Pull up following revision(s) (requested by add in ticket #655):
        sys/ufs/ffs/ffs_vfsops.c: revision 1.245 via patch
        sys/ufs/ffs/ffs_vnops.c: revision 1.112 via patch
fsync:
- atime updates were not being synced.
ffs_sync:
- In some cases the sync vnode was acting like now dead /usr/sbin/update.
  It was examining vnodes that it should have ignored.
- It would find dirty inodes and try to flush them. Often ffs_fsync()
  cheerfully ignored the flush request due to the fsync bug. Such inodes
  remained dirty and were repeatedly re-examined by the syncer until
  vnode reclaim or system shutdown.
- We were marking our place in the per-mount vnode list even though in
  most cases there was not flush to perform. While not a bug, this wasted
  CPU cycles because a TAILQ_NEXT would have sufficed.


To generate a diff of this commit:
cvs rdiff -u -r1.104.4.6 -r1.104.4.7 src/sys/ufs/ffs/ffs_vnops.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.