From: Jan Kara <jack@suse.cz>
Date: Thu, 13 May 2010 18:18:45 +0000 (+0200)
Subject: ocfs2: Use __dquot_transfer to avoid lock inversion
X-Git-Tag: v2.6.35-rc1~455^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=52a9ee281cfb26fffce1d6c409fb4b1f4aa8a766;p=pandora-kernel.git

ocfs2: Use __dquot_transfer to avoid lock inversion

dquot_transfer() acquires own references to dquots via dqget(). Thus it waits
for dq_lock which creates a lock inversion because dq_lock ranks above
transaction start but transaction is already started in ocfs2_setattr(). Fix
the problem by passing own references directly to __dquot_transfer.

Acked-by: Joel Becker <Joel.Becker@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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