linux-kernel - [PATCH 33/42] block: convert rq_data_dir helper to use REQ

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Message-Id: <1460576188-5751-34-git-send-email-mchristi@redhat.com>
Date:	Wed, 13 Apr 2016 14:36:19 -0500
From:	mchristi@...hat.com
To:	linux-f2fs-devel@...ts.sourceforge.net, linux-ext4@...r.kernel.org,
	konrad.wilk@...cle.com, drbd-dev@...ts.linbit.com,
	philipp.reisner@...bit.com, lars.ellenberg@...bit.com,
	linux-raid@...r.kernel.org, dm-devel@...hat.com,
	linux-fsdevel@...r.kernel.org, linux-bcache@...r.kernel.org,
	linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-scsi@...r.kernel.org, linux-mtd@...ts.infradead.org,
	target-devel@...r.kernel.org, linux-btrfs@...r.kernel.org,
	osd-dev@...n-osd.org, xfs@....sgi.com, ocfs2-devel@....oracle.com
Cc:	Mike Christie <mchristi@...hat.com>
Subject: [PATCH 33/42] block: convert rq_data_dir helper to use REQ_OPs

From: Mike Christie <mchristi@...hat.com>

The request->op field is now always setup up with a REQ_OP.
This patch has the rq_data_dir helper convert the operation
to a WRITE or READ direction based on that.

Signed-off-by: Mike Christie <mchristi@...hat.com>
Reviewed-by: Christoph Hellwig <hch@....de>
---
 include/linux/blkdev.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 550b371..25ec7ce 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -599,7 +599,7 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q)
 
 #define list_entry_rq(ptr)	list_entry((ptr), struct request, queuelist)
 
-#define rq_data_dir(rq)		((int)((rq)->cmd_flags & 1))
+#define rq_data_dir(rq)		(op_is_write(rq->op) ? WRITE : READ)
 
 /*
  * Driver can handle struct request, if it either has an old style
-- 
2.7.2