From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Tue, 5 Jan 2010 01:14:30 +0000 (+0100)
Subject: reiserfs: Relax lock on xattr removing
X-Git-Tag: v2.6.33-rc4~66^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4f3be1b5a98587b86cae05aa5d129dd0b3fff466;p=pandora-kernel.git

reiserfs: Relax lock on xattr removing

When we remove an xattr, we call lookup_and_delete_xattr()
that takes some private xattr inodes mutexes. But we hold
the reiserfs lock at this time, which leads to dependency
inversions.

We can safely call lookup_and_delete_xattr() without the
reiserfs lock, where xattr inodes lookups only need the
xattr inodes mutexes.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Christian Kujau <lists@nerdbynature.de>
Cc: Alexander Beregalov <a.beregalov@gmail.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Ingo Molnar <mingo@elte.hu>
---

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