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OpenCloudOS-Kernel
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xfs: simplify xfs_qm_detach_gdquots 

There is no reason to drop qi_dqlist_lock around calls to xfs_qm_dqrele
because the free list lock now nests inside qi_dqlist_lock and the
dquot lock.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Christoph Hellwig 2011-12-06 21:58:21 +00:00 committed by Ben Myers
parent 093019cf1b
commit 28fb588c9b
1 changed files with 5 additions and 17 deletions
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22
fs/xfs/xfs_qm.c
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@ -449,7 +449,6 @@ xfs_qm_detach_gdquots(
{
struct xfs_quotainfo *q = mp->m_quotainfo;
struct xfs_dquot *dqp, *gdqp;
int nrecl;
again:
ASSERT(mutex_is_locked(&q->qi_dqlist_lock));
@ -462,25 +461,14 @@ xfs_qm_detach_gdquots(
mutex_lock(&q->qi_dqlist_lock);
goto again;
}
if ((gdqp = dqp->q_gdquot)) {
xfs_dqlock(gdqp);
gdqp = dqp->q_gdquot;
if (gdqp)
dqp->q_gdquot = NULL;
}
xfs_dqunlock(dqp);
if (gdqp) {
/*
* Can't hold the mplist lock across a dqput.
* XXXmust convert to marker based iterations here.
*/
nrecl = q->qi_dqreclaims;
mutex_unlock(&q->qi_dqlist_lock);
xfs_qm_dqput(gdqp);
mutex_lock(&q->qi_dqlist_lock);
if (nrecl != q->qi_dqreclaims)
goto again;
}
if (gdqp)
xfs_qm_dqrele(gdqp);
}
}