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path: root/fs/quota/quota_v2.c
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Diffstat (limited to 'fs/quota/quota_v2.c')
-rw-r--r--fs/quota/quota_v2.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/quota/quota_v2.c b/fs/quota/quota_v2.c
index b2cd34f6b3da..482733abe4ac 100644
--- a/fs/quota/quota_v2.c
+++ b/fs/quota/quota_v2.c
@@ -298,7 +298,15 @@ static int v2_read_dquot(struct dquot *dquot)
static int v2_write_dquot(struct dquot *dquot)
{
- return qtree_write_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot);
+ struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
+ int ret;
+
+ down_write(&dqopt->dqio_sem);
+ ret = qtree_write_dquot(
+ sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv,
+ dquot);
+ up_write(&dqopt->dqio_sem);
+ return ret;
}
static int v2_release_dquot(struct dquot *dquot)