linux-kernel - [PATCH v1 17/27] dm: crypt: use bio_add

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Message-Id: <1460635375-28282-18-git-send-email-tom.leiming@gmail.com>
Date:	Thu, 14 Apr 2016 20:02:35 +0800
From:	Ming Lei <tom.leiming@...il.com>
To:	Jens Axboe <axboe@...com>, linux-kernel@...r.kernel.org
Cc:	linux-block@...r.kernel.org, Christoph Hellwig <hch@...radead.org>,
	Ming Lei <tom.leiming@...il.com>,
	Alasdair Kergon <agk@...hat.com>,
	Mike Snitzer <snitzer@...hat.com>,
	dm-devel@...hat.com (maintainer:DEVICE-MAPPER (LVM)),
	Shaohua Li <shli@...nel.org>,
	linux-raid@...r.kernel.org (open list:SOFTWARE RAID (Multiple Disks)
	SUPPORT)
Subject: [PATCH v1 17/27] dm: crypt: use bio_add_page()

Reviewed-by: Christoph Hellwig <hch@....de>
Signed-off-by: Ming Lei <tom.leiming@...il.com>
---
 drivers/md/dm-crypt.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 4f3cb35..a2805c1 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -995,7 +995,6 @@ static struct bio *crypt_alloc_buffer(struct dm_crypt_io *io, unsigned size)
 	gfp_t gfp_mask = GFP_NOWAIT | __GFP_HIGHMEM;
 	unsigned i, len, remaining_size;
 	struct page *page;
-	struct bio_vec *bvec;
 
 retry:
 	if (unlikely(gfp_mask & __GFP_DIRECT_RECLAIM))
@@ -1020,12 +1019,7 @@ retry:
 
 		len = (remaining_size > PAGE_SIZE) ? PAGE_SIZE : remaining_size;
 
-		bvec = &clone->bi_io_vec[clone->bi_vcnt++];
-		bvec->bv_page = page;
-		bvec->bv_len = len;
-		bvec->bv_offset = 0;
-
-		clone->bi_iter.bi_size += len;
+		bio_add_page(clone, page, len, 0);
 
 		remaining_size -= len;
 	}
-- 
1.9.1