[git pull] vfs fix

[Al Viro <viro@ZenIV.linux.org.uk>]

Off-by-one in d_walk()/__dentry_kill() race fix.  It's very hard to hit;
possible in the same conditions as the original bug, except that you
need the skipped branch to contain all the remaining evictables, so that
the d_walk()-calling loop in d_invalidate() decides there's nothing more
to do and doesn't go for another pass - otherwise that next pass will
sweep the sucker.  So it's not too urgent, but seeing that the fix is obvious
and the original commit has spread into all -stable branches...
Please, pull from

git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git for-linus

Shortlog:
Al Viro (1):
      d_walk() might skip too much

Diffstat:
 fs/dcache.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)