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
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -564,7 +564,8 @@
* 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);
}