ceph: add d_drop for some error cases in ceph_symlink()

When file num exceeds quota limit, should call d_drop to drop
dentry from cache as well.

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 4b6a49fd2a61..0210b02b86d4 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -885,8 +885,10 @@ static int ceph_symlink(struct inode *dir, struct dentry *dentry,
         if (ceph_snap(dir) != CEPH_NOSNAP)
                 return -EROFS;
 
-        if (ceph_quota_is_max_files_exceeded(dir))
-                return -EDQUOT;
+        if (ceph_quota_is_max_files_exceeded(dir)) {
+                err = -EDQUOT;
+                goto out;
+        }
 
         dout("symlink in dir %p dentry %p to '%s'\n", dir, dentry, dest);
         req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SYMLINK, USE_AUTH_MDS);