block: remove wrappers for request type/flags

Remove all the trivial wrappers for the cmd_type and cmd_flags fields in
struct requests.  This allows much easier grepping for different request
types instead of unwinding through macros.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c
index 03c71f7..7c05ddc 100644
--- a/drivers/cdrom/gdrom.c
+++ b/drivers/cdrom/gdrom.c
@@ -643,7 +643,7 @@
 	struct request *req;
 
 	while ((req = blk_fetch_request(rq)) != NULL) {
-		if (!blk_fs_request(req)) {
+		if (req->cmd_type != REQ_TYPE_FS) {
 			printk(KERN_DEBUG "GDROM: Non-fs request ignored\n");
 			__blk_end_request_all(req, -EIO);
 			continue;