ceph: return ceph_mdsc_do_request() errors from __get_parent()

Return the error returned by ceph_mdsc_do_request(). Otherwise,
r_target_inode ends up being NULL this ends up returning ENOENT
regardless of the error.

Signed-off-by: Qiujun Huang <hqjagain@gmail.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

diff --git a/fs/ceph/export.c b/fs/ceph/export.c
index b6bfa94332c304eb6e608a19f5bb2f581e7f3d5c..79dc06881e78e20fa0a568d570da009d3dc6cfeb 100644 (file)
--- a/fs/ceph/export.c
+++ b/fs/ceph/export.c
@@ -315,6 +315,11 @@ static struct dentry *__get_parent(struct super_block *sb,
 
        req->r_num_caps = 1;
        err = ceph_mdsc_do_request(mdsc, NULL, req);
+       if (err) {
+               ceph_mdsc_put_request(req);
+               return ERR_PTR(err);
+       }
+
        inode = req->r_target_inode;
        if (inode)
                ihold(inode);