From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Thu, 7 May 2009 23:05:06 +0000 (+0200)
Subject: kill-the-bkl/reiserfs: don't hold the write recursively in reiserfs_lookup()
X-Git-Tag: v2.6.33-rc1~360^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b1c839bb2d8d6f1f6bf48f5c657752b4963f88f8;p=pandora-kernel.git

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>
---

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