[PATCH] Split struct request ->flags into two parts

Right now ->flags is a bit of a mess: some are request types, and
others are just modifiers. Clean this up by splitting it into
->cmd_type and ->cmd_flags. This allows introduction of generic
Linux block message types, useful for sending generic Linux commands
to block devices.

Signed-off-by: Jens Axboe <axboe@suse.de>

drivers/cdrom/cdrom.c

@@ -2129,7 +2129,7 @@ static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
 		rq->cmd[9] = 0xf8;
 
 		rq->cmd_len = 12;
-		rq->flags |= REQ_BLOCK_PC;
+		rq->cmd_type = REQ_TYPE_BLOCK_PC;
 		rq->timeout = 60 * HZ;
 		bio = rq->bio;
 

drivers/cdrom/cdu31a.c

@@ -1338,8 +1338,10 @@ static void do_cdu31a_request(request_queue_t * q)
 		}
 
 		/* WTF??? */
-		if (!(req->flags & REQ_CMD))
+		if (!blk_fs_request(req)) {
+			end_request(req, 0);
 			continue;
+		}
 		if (rq_data_dir(req) == WRITE) {
 			end_request(req, 0);
 			continue;