commit b1c839bb2d8d6f1f6bf48f5c657752b4963f88f8
author Frederic Weisbecker <fweisbec@gmail.com> Fri May 08 01:05:06 2009 +0200
committer Frederic Weisbecker <fweisbec@gmail.com> Mon Sep 14 07:18:17 2009 +0200
tree 7396e1e56cfe544248d0e21374ab10f4edf6de3a
parent 26931309a47747fd31b2ef029c29d47794c2d93d

kill-the-bkl/reiserfs: don't hold the write recursively in reiserfs_lookup()

The write lock can be acquired recursively in reiserfs_lookup(). But we may
want to *really* release the lock before possible rescheduling from a
reiserfs_lookup() callee.

Hence we want to only acquire the lock once (ie: not recursively).

[ Impact: prevent from possible false unreleased write lock on sleeping ]

Cc: Jeff Mahoney <jeffm@suse.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>