[PATCH 12/16] xfs: simplify xfs_qm_detach_gdquots

Christoph Hellwig
2011-11-28T08:28:40Z

[-- Attachment #1: xfs-quota-simplify-xfs_qm_detach_gdquots --]
[-- Type: text/plain, Size: 1407 bytes --]

With the new lock order there is no reason to drop qi_dqlist_lock around
calls to xfs_qm_dqrele.

Signed-off-by: Christoph Hellwig <hch@lst.de>

---
fs/xfs/xfs_qm.c | 22 +++++-----------------
1 file changed, 5 insertions(+), 17 deletions(-)

Index: xfs/fs/xfs/xfs_qm.c
===================================================================
--- xfs.orig/fs/xfs/xfs_qm.c 2011-10-27 22:40:07.538179215 +0200
+++ xfs/fs/xfs/xfs_qm.c 2011-10-27 22:40:08.124671538 +0200
@@ -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);
}
}