From: Ming Lei <ming.lei@redhat.com>
To: Jens Axboe <axboe@fb.com>, Christoph Hellwig <hch@infradead.org>,
Kent Overstreet <kent.overstreet@gmail.com>
Cc: David Sterba <dsterba@suse.cz>, Huang Ying <ying.huang@intel.com>,
Mike Snitzer <snitzer@redhat.com>,
linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
Theodore Ts'o <tytso@mit.edu>,
"Darrick J . Wong" <darrick.wong@oracle.com>,
Coly Li <colyli@suse.de>, Filipe Manana <fdmanana@gmail.com>,
Randy Dunlap <rdunlap@infradead.org>,
Ming Lei <ming.lei@redhat.com>, Chris Mason <clm@fb.com>,
Josef Bacik <jbacik@fb.com>, David Sterba <dsterba@suse.com>,
linux-btrfs@vger.kernel.org
Subject: [PATCH V7 17/24] btrfs: move bio_pages_all() to btrfs
Date: Wed, 27 Jun 2018 20:45:41 +0800 [thread overview]
Message-ID: <20180627124548.3456-18-ming.lei@redhat.com> (raw)
In-Reply-To: <20180627124548.3456-1-ming.lei@redhat.com>
BTRFS is the only user of this helper, so move this helper into
BTRFS, and implement it via bio_for_each_segment_all(), since
bio->bi_vcnt may not equal to number of pages after multipage bvec
is enabled.
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <jbacik@fb.com>
Cc: David Sterba <dsterba@suse.com>
Cc: linux-btrfs@vger.kernel.org
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
fs/btrfs/extent_io.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 0b5e07723f5f..9fce9f0793fe 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2356,6 +2356,18 @@ struct bio *btrfs_create_repair_bio(struct inode *inode, struct bio *failed_bio,
return bio;
}
+static unsigned btrfs_bio_pages_all(struct bio *bio)
+{
+ unsigned i;
+ struct bio_vec *bv;
+
+ WARN_ON_ONCE(bio_flagged(bio, BIO_CLONED));
+
+ bio_for_each_segment_all(bv, bio, i)
+ ;
+ return i;
+}
+
/*
* this is a generic handler for readpage errors (default
* readpage_io_failed_hook). if other copies exist, read those and write back
@@ -2376,7 +2388,7 @@ static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset,
int read_mode = 0;
blk_status_t status;
int ret;
- unsigned failed_bio_pages = bio_pages_all(failed_bio);
+ unsigned failed_bio_pages = btrfs_bio_pages_all(failed_bio);
BUG_ON(bio_op(failed_bio) == REQ_OP_WRITE);
--
2.9.5
next prev parent reply other threads:[~2018-06-27 12:45 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-27 12:45 [PATCH V7 00/24] block: support multipage bvec Ming Lei
2018-06-27 12:45 ` [PATCH V7 01/24] dm: use bio_split() when splitting out the already processed bio Ming Lei
2018-06-27 13:17 ` Mike Snitzer
2018-06-27 12:45 ` [PATCH V7 02/24] bcache: don't clone bio in bch_data_verify Ming Lei
2018-06-27 12:45 ` [PATCH V7 03/24] exofs: use bio_clone_fast in _write_mirror Ming Lei
2018-06-27 12:45 ` [PATCH V7 04/24] block: remove bio_clone_kmalloc Ming Lei
2018-06-27 12:45 ` [PATCH V7 05/24] md: remove a bogus comment Ming Lei
2018-06-27 12:45 ` [PATCH V7 06/24] block: unexport bio_clone_bioset Ming Lei
2018-06-27 12:45 ` [PATCH V7 07/24] block: simplify bio_check_pages_dirty Ming Lei
2018-06-27 12:45 ` [PATCH V7 08/24] block: bio_set_pages_dirty can't see NULL bv_page in a valid bio_vec Ming Lei
2018-06-27 12:45 ` [PATCH V7 09/24] block: use bio_add_page in bio_iov_iter_get_pages Ming Lei
2018-06-27 12:45 ` [PATCH V7 10/24] block: introduce multipage page bvec helpers Ming Lei
2018-06-27 15:59 ` kbuild test robot
2018-11-09 11:15 ` Ming Lei
2018-06-27 12:45 ` [PATCH V7 11/24] block: introduce bio_for_each_bvec() Ming Lei
2018-06-27 12:45 ` [PATCH V7 12/24] block: use bio_for_each_bvec() to compute multipage bvec count Ming Lei
2018-06-27 12:45 ` [PATCH V7 13/24] block: use bio_for_each_bvec() to map sg Ming Lei
2018-06-27 12:45 ` [PATCH V7 14/24] block: introduce bvec_last_segment() Ming Lei
2018-06-27 12:45 ` [PATCH V7 15/24] fs/buffer.c: use bvec iterator to truncate the bio Ming Lei
2018-06-27 12:45 ` [PATCH V7 16/24] btrfs: use bvec_last_segment to get bio's last page Ming Lei
2018-06-27 12:45 ` Ming Lei [this message]
2018-06-27 12:45 ` [PATCH V7 18/24] block: introduce bio_bvecs() Ming Lei
2018-06-27 12:45 ` [PATCH V7 19/24] block: loop: pass multipage bvec to iov_iter Ming Lei
2018-06-27 12:45 ` [PATCH V7 20/24] bcache: avoid to use bio_for_each_segment_all() in bch_bio_alloc_pages() Ming Lei
2018-06-27 15:55 ` Coly Li
2018-06-28 1:28 ` Ming Lei
2018-06-28 2:01 ` Coly Li
2018-06-27 12:45 ` [PATCH V7 21/24] block: allow bio_for_each_segment_all() to iterate over multipage bvec Ming Lei
2018-06-27 12:45 ` [PATCH V7 22/24] block: enable multipage bvecs Ming Lei
2018-06-27 12:45 ` [PATCH V7 23/24] block: always define BIO_MAX_PAGES as 256 Ming Lei
2018-06-27 12:45 ` [PATCH V7 24/24] block: document usage of bio iterator helpers Ming Lei
2018-06-27 18:13 ` Randy Dunlap
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=20180627124548.3456-18-ming.lei@redhat.com \
--to=ming.lei@redhat.com \
--cc=axboe@fb.com \
--cc=clm@fb.com \
--cc=colyli@suse.de \
--cc=darrick.wong@oracle.com \
--cc=dsterba@suse.com \
--cc=dsterba@suse.cz \
--cc=fdmanana@gmail.com \
--cc=hch@infradead.org \
--cc=jbacik@fb.com \
--cc=kent.overstreet@gmail.com \
--cc=linux-block@vger.kernel.org \
--cc=linux-btrfs@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=rdunlap@infradead.org \
--cc=snitzer@redhat.com \
--cc=tytso@mit.edu \
--cc=ying.huang@intel.com \
/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).