[PATCH] quota: Move down dqptr_sem read after initializing default warn[] type at __dquot_alloc_space().

[Jeff Liu <jeff.liu@oracle.com>]

Hello,

sb->s_dqout->dqptr_sem is used to serialize ops using quota_info for pointers from inode to dquots.
But for __dquot_alloc_space(), it could be safely moved down after the default warn[] array got initialized IMHO.

Thanks,
-Jeff


Signed-off-by: Jie Liu <jeff.liu@oracle.com>

---
 fs/quota/dquot.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 10cbe84..510ae87 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -1571,10 +1571,10 @@ int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags)
 		goto out;
 	}
 
-	down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
 	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
 		warn[cnt].w_type = QUOTA_NL_NOWARN;
 
+	down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
 	spin_lock(&dq_data_lock);
 	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
 		if (!dquots[cnt])
-- 
1.7.4.1