ceph: allocate cap_release message when receiving cap import

When client wants to release an imported cap, it's possible there is no reserved cap_release message in corresponding mds session. so __queue_cap_release causes kernel panic. Signed-off-by: Yan, Zheng <[email protected]> Reviewed-by: Sage Weil <[email protected]>
niw · Jan 17, 2013 · 66f5869 · 66f5869
1 parent 395c312
commit 66f5869
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
@@ -2833,6 +2833,9 @@ void ceph_handle_caps(struct ceph_mds_session *session,
 	dout(" mds%d seq %lld cap seq %u\n", session->s_mds, session->s_seq,
 	     (unsigned)seq);
 
+	if (op == CEPH_CAP_OP_IMPORT)
+		ceph_add_cap_releases(mdsc, session);
+
 	/* lookup ino */
 	inode = ceph_find_inode(sb, vino);
 	ci = ceph_inode(inode);