commit 20c68fdea1646ed746abf19122d7699493927005
author Lars Ellenberg <lars.ellenberg@linbit.com> Mon Apr 28 18:43:25 2014 +0200
committer Jens Axboe <axboe@fb.com> Wed Apr 30 13:46:55 2014 -0600
tree 64ad88b5cdec165eccd5c9b327c7a794dce26c33
parent 2f632aeb5302da93f760d965e970600b35907026

drbd: Enable QUEUE_FLAG_DISCARD only if the peer can recieve P_TRIM

Allow the user of REQ_DISCARD.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

drivers/block/drbd/drbd_protocol.h

diff --git a/drivers/block/drbd/drbd_protocol.h b/drivers/block/drbd/drbd_protocol.h
index 478c63d..2da9104a 100644
--- a/drivers/block/drbd/drbd_protocol.h
+++ b/drivers/block/drbd/drbd_protocol.h
@@ -160,6 +160,8 @@
  *   ReportParams
  */
 
+#define FF_TRIM      1
+
 struct p_connection_features {
 	u32 protocol_min;
 	u32 feature_flags;