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authorSheng Yong <shengyong1@huawei.com>2018-07-24 15:17:53 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2018-08-01 21:52:36 +0300
commit955ac6e523444493298016523788bb7ec1a2f06e (patch)
tree908eee1074652ca14419ff1a0004c76345dae351 /fs/f2fs
parent970e348d9829e9fc3091da2fe189ab34a07201e6 (diff)
downloadlinux-955ac6e523444493298016523788bb7ec1a2f06e.tar.xz
f2fs: quota: decrease the lock granularity of statfs_project
According to fs/quota/dquot.c, `dq_data_lock' protects mem_dqinfo structures and modifications of dquot pointers in the inode, and `dquot->dq_dqb_lock' protects data from dq_dqb. We should use dquot->dq_dqb_lock in statfs_project instead of dq_dat_lock. Signed-off-by: Sheng Yong <shengyong1@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/super.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 609ea8736dbf..bdea57067bc0 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1117,7 +1117,7 @@ static int f2fs_statfs_project(struct super_block *sb,
dquot = dqget(sb, qid);
if (IS_ERR(dquot))
return PTR_ERR(dquot);
- spin_lock(&dq_data_lock);
+ spin_lock(&dquot->dq_dqb_lock);
limit = (dquot->dq_dqb.dqb_bsoftlimit ?
dquot->dq_dqb.dqb_bsoftlimit :
@@ -1140,7 +1140,7 @@ static int f2fs_statfs_project(struct super_block *sb,
(buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
}
- spin_unlock(&dq_data_lock);
+ spin_unlock(&dquot->dq_dqb_lock);
dqput(dquot);
return 0;
}