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/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 33d6503..df3d91b 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -184,7 +184,7 @@
 	ide_hwif_t *hwif = drive->hwif;
 
 	BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED);
-	BUG_ON(!blk_fs_request(rq));
+	BUG_ON(rq->cmd_type != REQ_TYPE_FS);
 
 	ledtrig_ide_activity();