This is a note to let you know that I've just added the patch titled
quota: avoid increasing DQST_LOOKUPS when iterating over dirty/inuse list
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
quota-avoid-increasing-dqst_lookups-when-iterating-o.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a306c49b375583a837d22f04e4828fda544f72a9
Author: Chengguang Xu <cgxu519@xxxxxxxxxxx>
Date: Thu Sep 26 16:34:08 2019 +0800
quota: avoid increasing DQST_LOOKUPS when iterating over dirty/inuse list
[ Upstream commit 05848db2083d4f232e84e385845dcd98d5c511b2 ]
It is meaningless to increase DQST_LOOKUPS number while iterating
over dirty/inuse list, so just avoid it.
Link: https://lore.kernel.org/r/20190926083408.4269-1-cgxu519@xxxxxxxxxxx
Signed-off-by: Chengguang Xu <cgxu519@xxxxxxxxxxx>
Signed-off-by: Jan Kara <jack@xxxxxxx>
Stable-dep-of: dabc8b207566 ("quota: fix dqput() to follow the guarantees dquot_srcu should provide")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 01bec330d54b1..50aaa5b0706e8 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -594,7 +594,6 @@ int dquot_scan_active(struct super_block *sb,
/* Now we have active dquot so we can just increase use count */
atomic_inc(&dquot->dq_count);
spin_unlock(&dq_list_lock);
- dqstats_inc(DQST_LOOKUPS);
dqput(old_dquot);
old_dquot = dquot;
/*
@@ -649,7 +648,6 @@ int dquot_writeback_dquots(struct super_block *sb, int type)
* use count */
dqgrab(dquot);
spin_unlock(&dq_list_lock);
- dqstats_inc(DQST_LOOKUPS);
err = sb->dq_op->write_dquot(dquot);
if (err) {
/*
