quota: Acquire dqio_sem for reading in dquot_get_next_id()

[sfrench/cifs-2.6.git] / fs / quota / dquot.c

diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 21358f31923d86beac01110f5234b57957019178..8d5ccad3bf3ea502e55ba759377cd391c1b87586 100644 (file)
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2079,9 +2079,9 @@ int dquot_get_next_id(struct super_block *sb, struct kqid *qid)
                return -ESRCH;
        if (!dqopt->ops[qid->type]->get_next_id)
                return -ENOSYS;
                return -ESRCH;
        if (!dqopt->ops[qid->type]->get_next_id)
                return -ENOSYS;

-       down_write(&dqopt->dqio_sem);
+       down_read(&dqopt->dqio_sem);

        err = dqopt->ops[qid->type]->get_next_id(sb, qid);
        err = dqopt->ops[qid->type]->get_next_id(sb, qid);

-       up_write(&dqopt->dqio_sem);
+       up_read(&dqopt->dqio_sem);

        return err;
 }
 EXPORT_SYMBOL(dquot_get_next_id);
        return err;
 }
 EXPORT_SYMBOL(dquot_get_next_id);