Commit 3540303f authored by Sage Weil's avatar Sage Weil
Browse files

ceph: fix rare potential cap leak 



If we grab new_cap, retake the lock, and find we already have a cap now
for the given mds, release new_cap.

Signed-off-by: default avatarSage Weil <sage@newdream.net>
parent 12a2f643

fs/ceph/caps.c

+2 −1
Original line number Diff line number Diff line
@@ -569,7 +569,8 @@ int ceph_add_cap(struct inode *inode, 
		list_add_tail(&cap->session_caps, &session->s_caps);

		session->s_nr_caps++;

		spin_unlock(&session->s_cap_lock);

	}

	} else if (new_cap)

		ceph_put_cap(mdsc, new_cap);



	if (!ci->i_snap_realm) {

		/*