From: Ming Lei <tom.leiming@gmail.com>
To: Shaohua Li <shli@kernel.org>, Jens Axboe <axboe@fb.com>,
linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org,
linux-block@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>
Cc: Ming Lei <tom.leiming@gmail.com>
Subject: [PATCH v1 10/14] md: raid1: use bio_segments_all()
Date: Fri, 24 Feb 2017 23:42:47 +0800 [thread overview]
Message-ID: <1487950971-1131-11-git-send-email-tom.leiming@gmail.com> (raw)
In-Reply-To: <1487950971-1131-1-git-send-email-tom.leiming@gmail.com>
Use this helper, instead of direct access to .bi_vcnt.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
---
drivers/md/raid1.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 7363bf56f3b4..391da975e092 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1091,7 +1091,8 @@ static void alloc_behind_pages(struct bio *bio, struct r1bio *r1_bio)
{
int i;
struct bio_vec *bvec;
- struct bio_vec *bvecs = kzalloc(bio->bi_vcnt * sizeof(struct bio_vec),
+ unsigned vcnt = bio_segments_all(bio);
+ struct bio_vec *bvecs = kzalloc(vcnt * sizeof(struct bio_vec),
GFP_NOIO);
if (unlikely(!bvecs))
return;
@@ -1107,12 +1108,12 @@ static void alloc_behind_pages(struct bio *bio, struct r1bio *r1_bio)
kunmap(bvec->bv_page);
}
r1_bio->behind_bvecs = bvecs;
- r1_bio->behind_page_count = bio->bi_vcnt;
+ r1_bio->behind_page_count = vcnt;
set_bit(R1BIO_BehindIO, &r1_bio->state);
return;
do_sync_io:
- for (i = 0; i < bio->bi_vcnt; i++)
+ for (i = 0; i < vcnt; i++)
if (bvecs[i].bv_page)
put_page(bvecs[i].bv_page);
kfree(bvecs);
--
2.7.4
next prev parent reply other threads:[~2017-02-24 15:42 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-24 15:42 [PATCH v1 00/14] md: cleanup on direct access to bvec table Ming Lei
2017-02-24 15:42 ` [PATCH v1 01/14] block: introduce bio_segments_all() Ming Lei
2017-02-25 18:22 ` Christoph Hellwig
2017-02-28 12:15 ` Ming Lei
2017-02-24 15:42 ` [PATCH v1 02/14] block: introduce bio_remove_last_page() Ming Lei
2017-02-25 18:23 ` Christoph Hellwig
2017-02-28 12:18 ` Ming Lei
2017-02-24 15:42 ` [PATCH v1 03/14] md: raid1/raid10: use bio_remove_last_page() Ming Lei
2017-02-24 15:42 ` [PATCH v1 04/14] md: move two macros into md.h Ming Lei
2017-02-24 15:42 ` [PATCH v1 05/14] md: prepare for managing resync I/O pages in clean way Ming Lei
2017-02-24 15:42 ` [PATCH v1 06/14] md: raid1: simplify r1buf_pool_free() Ming Lei
2017-02-24 15:42 ` [PATCH v1 07/14] md: raid1: don't use bio's vec table to manage resync pages Ming Lei
2017-02-24 15:42 ` [PATCH v1 08/14] md: raid1: retrieve page from pre-allocated resync page array Ming Lei
2017-02-24 15:42 ` [PATCH v1 09/14] md: raid1: use bio helper in process_checks() Ming Lei
2017-02-24 15:42 ` Ming Lei [this message]
2017-02-24 15:42 ` [PATCH v1 11/14] md: raid10: refactor code of read reshape's .bi_end_io Ming Lei
2017-02-24 15:42 ` [PATCH v1 12/14] md: raid10: don't use bio's vec table to manage resync pages Ming Lei
2017-02-24 15:42 ` [PATCH v1 13/14] md: raid10: retrieve page from preallocated resync page array Ming Lei
2017-02-24 15:42 ` [PATCH v1 14/14] md: raid10: avoid direct access to bvec table in handle_reshape_read_error Ming Lei
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1487950971-1131-11-git-send-email-tom.leiming@gmail.com \
--to=tom.leiming@gmail.com \
--cc=axboe@fb.com \
--cc=hch@infradead.org \
--cc=linux-block@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-raid@vger.kernel.org \
--cc=shli@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).