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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_v1.c
parentsuppress warning: "quotatypes" defined but not used (diff)
downloadlinux-dev-dde9588853b1bde542eab247f8838c472806688f.tar.xz
linux-dev-dde9588853b1bde542eab247f8838c472806688f.zip
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_v1.c')
-rw-r--r--fs/quota/quota_v1.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/quota/quota_v1.c b/fs/quota/quota_v1.c
index 2ae757e9c008..4af344c5852a 100644
--- a/fs/quota/quota_v1.c
+++ b/fs/quota/quota_v1.c
@@ -71,7 +71,7 @@ static int v1_read_dqblk(struct dquot *dquot)
dquot->dq_dqb.dqb_ihardlimit == 0 &&
dquot->dq_dqb.dqb_isoftlimit == 0)
set_bit(DQ_FAKE_B, &dquot->dq_flags);
- dqstats.reads++;
+ dqstats_inc(DQST_READS);
return 0;
}
@@ -104,7 +104,7 @@ static int v1_commit_dqblk(struct dquot *dquot)
ret = 0;
out:
- dqstats.writes++;
+ dqstats_inc(DQST_WRITES);
return ret;
}