block: Finish renaming REQ_DISCARD into REQ_OP_DISCARD

Some time ago REQ_DISCARD was renamed into REQ_OP_DISCARD. Some comments
and documentation files were not updated however. Update these comments
and documentation files. See also commit 4e1b2d52a80d ("block, fs,
drivers: remove REQ_OP compat defs and related code").

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Mike Christie <mchristi@redhat.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Philipp Reisner <philipp.reisner@linbit.com>
Cc: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

5 files changed, 6 insertions, 6 deletions

diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 8a4c1328e6f9..1e47db57b9d2 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -429,7 +429,7 @@ enum {
         __EE_CALL_AL_COMPLETE_IO,
         __EE_MAY_SET_IN_SYNC,
 
-        /* is this a TRIM aka REQ_DISCARD? */
+        /* is this a TRIM aka REQ_OP_DISCARD? */
         __EE_IS_TRIM,
 
         /* In case a barrier failed,
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 15a9ffce9012..55fd104f1ed4 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1673,7 +1673,7 @@ static u32 bio_flags_to_wire(struct drbd_connection *connection,
                 return bio->bi_opf & REQ_SYNC ? DP_RW_SYNC : 0;
 }
 
-/* Used to send write or TRIM aka REQ_DISCARD requests
+/* Used to send write or TRIM aka REQ_OP_DISCARD requests
  * R_PRIMARY -> Peer    (P_DATA, P_TRIM)
  */
 int drbd_send_dblock(struct drbd_peer_device *peer_device, struct drbd_request *req)
diff --git a/drivers/block/drbd/drbd_protocol.h b/drivers/block/drbd/drbd_protocol.h
index c3081f93051c..48dabbb21e11 100644
--- a/drivers/block/drbd/drbd_protocol.h
+++ b/drivers/block/drbd/drbd_protocol.h
@@ -57,7 +57,7 @@ enum drbd_packet {
         P_PROTOCOL_UPDATE     = 0x2d, /* data sock: is used in established connections */
         /* 0x2e to 0x30 reserved, used in drbd 9 */
 
-        /* REQ_DISCARD. We used "discard" in different contexts before,
+        /* REQ_OP_DISCARD. We used "discard" in different contexts before,
          * which is why I chose TRIM here, to disambiguate. */
         P_TRIM                = 0x31,
 
@@ -126,7 +126,7 @@ struct p_header100 {
 #define DP_UNPLUG             8 /* not used anymore   */
 #define DP_FUA               16 /* equals REQ_FUA     */
 #define DP_FLUSH             32 /* equals REQ_PREFLUSH   */
-#define DP_DISCARD           64 /* equals REQ_DISCARD */
+#define DP_DISCARD           64 /* equals REQ_OP_DISCARD */
 #define DP_SEND_RECEIVE_ACK 128 /* This is a proto B write request */
 #define DP_SEND_WRITE_ACK   256 /* This is a proto C write request */
 #define DP_WSAME            512 /* equiv. REQ_WRITE_SAME */
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index 19cac36e9737..1c4da17e902e 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -650,7 +650,7 @@ int __req_mod(struct drbd_request *req, enum drbd_req_event what,
         case DISCARD_COMPLETED_NOTSUPP:
         case DISCARD_COMPLETED_WITH_ERROR:
                 /* I'd rather not detach from local disk just because it
-                 * failed a REQ_DISCARD. */
+                 * failed a REQ_OP_DISCARD. */
                 mod_rq_state(req, m, RQ_LOCAL_PENDING, RQ_LOCAL_COMPLETED);
                 break;
 
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index c7ef48efe871..99255d0c9e2f 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -152,7 +152,7 @@ void drbd_endio_write_sec_final(struct drbd_peer_request *peer_req) __releases(l
 
         do_wake = list_empty(block_id == ID_SYNCER ? &device->sync_ee : &device->active_ee);
 
-        /* FIXME do we want to detach for failed REQ_DISCARD?
+        /* FIXME do we want to detach for failed REQ_OP_DISCARD?
          * ((peer_req->flags & (EE_WAS_ERROR|EE_IS_TRIM)) == EE_WAS_ERROR) */
         if (peer_req->flags & EE_WAS_ERROR)
                 __drbd_chk_io_error(device, DRBD_WRITE_ERROR);