[PATCH 04/27] block: loop: use bio_get_base_vec() to retrive bvec table

From: Ming Lei <tom.leiming@gmail.com>
To: Jens Axboe <axboe@fb.com>, linux-kernel@vger.kernel.org
Cc: linux-block@vger.kernel.org,
	Christoph Hellwig <hch@infradead.org>,
	Boaz Harrosh <boaz@plexistor.com>,
	Ming Lei <tom.leiming@gmail.com>,
	Al Viro <viro@zeniv.linux.org.uk>,
	Jarod Wilson <jarod@redhat.com>, Tejun Heo <tj@kernel.org>,
	Miklos Szeredi <mszeredi@suse.cz>, NeilBrown <neilb@suse.de>
Subject: [PATCH 04/27] block: loop: use bio_get_base_vec() to retrive bvec table
Date: Tue,  5 Apr 2016 19:56:49 +0800	[thread overview]
Message-ID: <1459857443-20611-5-git-send-email-tom.leiming@gmail.com> (raw)
In-Reply-To: <1459857443-20611-1-git-send-email-tom.leiming@gmail.com>

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
---
 drivers/block/loop.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 423f4ca..2a94d3bb 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -477,7 +477,7 @@ static int lo_rw_aio(struct loop_device *lo, struct loop_cmd *cmd,
 		     loff_t pos, bool rw)
 {
 	struct iov_iter iter;
-	struct bio_vec *bvec;
+	const struct bio_vec *bvec;
 	struct bio *bio = cmd->rq->bio;
 	struct file *file = lo->lo_backing_file;
 	int ret;
@@ -485,7 +485,8 @@ static int lo_rw_aio(struct loop_device *lo, struct loop_cmd *cmd,
 	/* nomerge for loop request queue */
 	WARN_ON(cmd->rq->bio != cmd->rq->biotail);
 
-	bvec = __bvec_iter_bvec(bio->bi_io_vec, bio->bi_iter);
+	/* passed to iterate_bvec() */
+	bvec = bio_get_base_vec(bio);
 	iov_iter_bvec(&iter, ITER_BVEC | rw, bvec,
 		      bio_segments(bio), blk_rq_bytes(cmd->rq));
 
-- 
1.9.1
