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Message-Id: <1347058760-30794-5-git-send-email-koverstreet@google.com>
Date: Fri, 7 Sep 2012 15:59:15 -0700
From: Kent Overstreet <koverstreet@...gle.com>
To: linux-bcache@...r.kernel.org, linux-kernel@...r.kernel.org,
dm-devel@...hat.com
Cc: Kent Overstreet <koverstreet@...gle.com>, tj@...nel.org,
axboe@...nel.dk, NeilBrown <neilb@...e.de>
Subject: [PATCH 4/9] md: Convert md_trim_bio() to use bio_advance()
Signed-off-by: Kent Overstreet <koverstreet@...gle.com>
CC: Jens Axboe <axboe@...nel.dk>
CC: NeilBrown <neilb@...e.de>
---
drivers/md/md.c | 19 +++++--------------
1 file changed, 5 insertions(+), 14 deletions(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 7a2b079..51ce48c 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -190,25 +190,16 @@ void md_trim_bio(struct bio *bio, int offset, int size)
struct bio_vec *bvec;
int sofar = 0;
- size <<= 9;
if (offset == 0 && size == bio->bi_size)
return;
- bio->bi_sector += offset;
- bio->bi_size = size;
- offset <<= 9;
clear_bit(BIO_SEG_VALID, &bio->bi_flags);
- while (bio->bi_idx < bio->bi_vcnt &&
- bio->bi_io_vec[bio->bi_idx].bv_len <= offset) {
- /* remove this whole bio_vec */
- offset -= bio->bi_io_vec[bio->bi_idx].bv_len;
- bio->bi_idx++;
- }
- if (bio->bi_idx < bio->bi_vcnt) {
- bio->bi_io_vec[bio->bi_idx].bv_offset += offset;
- bio->bi_io_vec[bio->bi_idx].bv_len -= offset;
- }
+ bio_advance(bio, offset << 9);
+
+ size <<= 9;
+ bio->bi_size = size;
+
/* avoid any complications with bi_idx being non-zero*/
if (bio->bi_idx) {
memmove(bio->bi_io_vec, bio->bi_io_vec+bio->bi_idx,
--
1.7.12
--
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