From: Christoph Hellwig <hch@infradead.org>
Date: Tue, 6 Dec 2011 21:58:18 +0000 (+0000)
Subject: xfs: flatten the dquot lock ordering
X-Git-Tag: v3.3-rc1~169^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=92678554abfc2a2f2727ad168da87d8d434ac904;p=pandora-kernel.git

xfs: flatten the dquot lock ordering

Introduce a new XFS_DQ_FREEING flag that tells lookup and mplist walks
to skip a dquot that is beeing freed, and use this avoid the trylock
on the hash and mplist locks in xfs_qm_dqreclaim_one.  Also simplify
xfs_dqpurge by moving the inodes to a dispose list after marking them
XFS_DQ_FREEING and avoid the locker ordering constraints.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
---

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