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authorDmitry Monakhov <dmonakhov@openvz.org>2010-04-26 20:03:33 +0400
committerJan Kara <jack@suse.cz>2010-05-21 19:30:41 +0200
commitdde9588853b1bde542eab247f8838c472806688f (patch)
tree9f9c68bf63120056517bbfce78b75e6820cc4c4b /fs/quota/quota_tree.c
parentda8d1ba22fa1fd0c0e541a43d75ebb062589b14b (diff)
quota: Make quota stat accounting lockless.
Quota stats is mostly writable data structure. Let's alloc percpu bucket for each value. NOTE: dqstats_read() function is racy against dqstats_{inc,dec} and may return inconsistent value. But this is ok since absolute accuracy is not required. Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/quota/quota_tree.c')
-rw-r--r--fs/quota/quota_tree.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/quota/quota_tree.c b/fs/quota/quota_tree.c
index f81f4bcfb178..5b7f7416ec7a 100644
--- a/fs/quota/quota_tree.c
+++ b/fs/quota/quota_tree.c
@@ -384,7 +384,7 @@ int qtree_write_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
} else {
ret = 0;
}
- dqstats.writes++;
+ dqstats_inc(DQST_WRITES);
kfree(ddquot);
return ret;
@@ -634,7 +634,7 @@ int qtree_read_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
spin_unlock(&dq_data_lock);
kfree(ddquot);
out:
- dqstats.reads++;
+ dqstats_inc(DQST_READS);
return ret;
}
EXPORT_SYMBOL(qtree_read_dquot);