ceph: add request to the tail of unsafe write list

In sync_write_wait(), we assume that the newest request is at the
tail of unsafe write list. We should maintain the semantics here.

Signed-off-by: Henry C Chang <henry_c_chang@tcloudcomputing.com>
Signed-off-by: Sage Weil <sage@newdream.net>

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index db5d863..159b512 100644 (file)
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -564,7 +564,8 @@ more:
                         * start_request so that a tid has been assigned.
                         */
                        spin_lock(&ci->i_unsafe_lock);
-                       list_add(&req->r_unsafe_item, &ci->i_unsafe_writes);
+                       list_add_tail(&req->r_unsafe_item,
+                                     &ci->i_unsafe_writes);
                        spin_unlock(&ci->i_unsafe_lock);
                        ceph_get_cap_refs(ci, CEPH_CAP_FILE_WR);
                }