From: Ming Lei <tom.leiming@gmail.com>
To: Jens Axboe <axboe@fb.com>, linux-kernel@vger.kernel.org
Cc: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Ming Lei <tom.leiming@gmail.com>,
Philipp Reisner <philipp.reisner@linbit.com>,
Lars Ellenberg <lars.ellenberg@linbit.com>,
drbd-dev@lists.linbit.com (open list:DRBD DRIVER)
Subject: [PATCH 14/60] block: drbd: comment on direct access bvec table
Date: Sat, 29 Oct 2016 16:08:13 +0800 [thread overview]
Message-ID: <1477728600-12938-15-git-send-email-tom.leiming@gmail.com> (raw)
In-Reply-To: <1477728600-12938-1-git-send-email-tom.leiming@gmail.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
---
drivers/block/drbd/drbd_bitmap.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index ab62b81c2ca7..ce9506da30ad 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -953,6 +953,7 @@ static void drbd_bm_endio(struct bio *bio)
struct drbd_bm_aio_ctx *ctx = bio->bi_private;
struct drbd_device *device = ctx->device;
struct drbd_bitmap *b = device->bitmap;
+ /* single page bio, safe for multipage bvec */
unsigned int idx = bm_page_to_idx(bio->bi_io_vec[0].bv_page);
if ((ctx->flags & BM_AIO_COPY_PAGES) == 0 &&
--
2.7.4
next prev parent reply other threads:[~2016-10-29 8:12 UTC|newest]
Thread overview: 107+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-29 8:07 [PATCH 00/60] block: support multipage bvec Ming Lei
2016-10-29 8:08 ` [PATCH 01/60] block: bio: introduce bio_init_with_vec_table() Ming Lei
2016-10-29 15:21 ` Christoph Hellwig
2016-10-29 8:08 ` [PATCH 02/60] block drivers: convert to bio_init_with_vec_table() Ming Lei
2016-10-29 8:08 ` [PATCH 03/60] block: drbd: remove impossible failure handling Ming Lei
2016-10-31 15:25 ` Christoph Hellwig
2016-10-29 8:08 ` [PATCH 04/60] block: floppy: use bio_add_page() Ming Lei
2016-10-31 15:26 ` Christoph Hellwig
2016-10-31 22:54 ` Ming Lei
2016-10-29 8:08 ` [PATCH 05/60] target: avoid to access .bi_vcnt directly Ming Lei
2016-10-31 15:26 ` Christoph Hellwig
2016-10-29 8:08 ` [PATCH 06/60] bcache: debug: avoid to access .bi_io_vec directly Ming Lei
2016-10-29 8:08 ` [PATCH 07/60] dm: crypt: use bio_add_page() Ming Lei
2016-10-29 8:08 ` [PATCH 08/60] dm: use bvec iterator helpers to implement .get_page and .next_page Ming Lei
2016-10-29 8:08 ` [PATCH 09/60] dm: dm.c: replace 'bio->bi_vcnt == 1' with !bio_multiple_segments Ming Lei
2016-10-31 15:29 ` Christoph Hellwig
2016-10-31 22:59 ` Ming Lei
2016-11-02 3:09 ` Kent Overstreet
2016-11-02 7:56 ` Ming Lei
2016-11-02 14:24 ` Mike Snitzer
2016-11-02 23:47 ` Ming Lei
2016-10-29 8:08 ` [PATCH 10/60] fs: logfs: convert to bio_add_page() in sync_request() Ming Lei
2016-10-29 8:08 ` [PATCH 11/60] fs: logfs: use bio_add_page() in __bdev_writeseg() Ming Lei
2016-10-31 15:29 ` Christoph Hellwig
2016-10-29 8:08 ` [PATCH 12/60] fs: logfs: use bio_add_page() in do_erase() Ming Lei
2016-10-31 15:29 ` Christoph Hellwig
2016-10-29 8:08 ` [PATCH 13/60] fs: logfs: remove unnecesary check Ming Lei
2016-10-31 15:29 ` Christoph Hellwig
2016-10-29 8:08 ` Ming Lei [this message]
2016-10-29 8:08 ` [PATCH 15/60] block: loop: comment on direct access to bvec table Ming Lei
2016-10-31 15:31 ` Christoph Hellwig
2016-10-31 23:08 ` Ming Lei
2016-10-29 8:08 ` [PATCH 16/60] block: pktcdvd: " Ming Lei
2016-10-31 15:33 ` Christoph Hellwig
2016-10-31 23:08 ` Ming Lei
2016-10-29 8:08 ` [PATCH 17/60] kernel/power/swap.c: " Ming Lei
2016-10-29 8:08 ` [PATCH 18/60] mm: page_io.c: " Ming Lei
2016-10-29 8:08 ` [PATCH 19/60] fs/buffer: " Ming Lei
2016-10-31 15:35 ` Christoph Hellwig
2016-10-31 23:12 ` Ming Lei
2016-10-29 8:08 ` [PATCH 20/60] f2fs: f2fs_read_end_io: " Ming Lei
2016-10-29 8:08 ` [PATCH 21/60] bcache: " Ming Lei
2016-10-29 8:08 ` [PATCH 22/60] block: comment on bio_alloc_pages() Ming Lei
2016-10-29 8:08 ` [PATCH 23/60] block: introduce flag QUEUE_FLAG_NO_MP Ming Lei
2016-10-29 15:29 ` Christoph Hellwig
2016-10-29 22:20 ` Ming Lei
2016-10-29 8:08 ` [PATCH 24/60] md: set NO_MP for request queue of md Ming Lei
2016-10-29 8:08 ` [PATCH 25/60] block: pktcdvd: set NO_MP for pktcdvd request queue Ming Lei
2016-10-29 8:08 ` [PATCH 26/60] btrfs: set NO_MP for request queues behind BTRFS Ming Lei
2016-10-31 15:36 ` Christoph Hellwig
2016-10-31 17:58 ` Chris Mason
2016-10-31 18:00 ` Christoph Hellwig
2016-10-29 8:08 ` [PATCH 27/60] block: introduce BIO_SP_MAX_SECTORS Ming Lei
2016-10-29 8:08 ` [PATCH 28/60] block: introduce QUEUE_FLAG_SPLIT_MP Ming Lei
2016-10-31 15:39 ` Christoph Hellwig
2016-10-31 23:56 ` Ming Lei
2016-11-02 3:08 ` Kent Overstreet
2016-11-03 10:38 ` Ming Lei
2016-11-03 11:20 ` Kent Overstreet
2016-11-03 11:26 ` Ming Lei
2016-11-03 11:30 ` Kent Overstreet
2016-10-29 8:08 ` [PATCH 29/60] dm: limit the max bio size as BIO_SP_MAX_SECTORS << SECTOR_SHIFT Ming Lei
2016-10-29 8:08 ` [PATCH 30/60] bcache: set flag of QUEUE_FLAG_SPLIT_MP Ming Lei
2016-10-29 8:08 ` [PATCH 31/60] block: introduce multipage/single page bvec helpers Ming Lei
2016-10-29 8:08 ` [PATCH 32/60] block: implement sp version of bvec iterator helpers Ming Lei
2016-10-29 11:06 ` kbuild test robot
2016-12-17 11:38 ` Ming Lei
2016-10-29 8:08 ` [PATCH 33/60] block: introduce bio_for_each_segment_mp() Ming Lei
2016-10-29 8:08 ` [PATCH 34/60] block: introduce bio_clone_sp() Ming Lei
2016-10-29 8:08 ` [PATCH 35/60] bvec_iter: introduce BVEC_ITER_ALL_INIT Ming Lei
2016-10-29 8:08 ` [PATCH 36/60] block: bounce: avoid direct access to bvec from bio->bi_io_vec Ming Lei
2016-10-29 8:08 ` [PATCH 37/60] block: bounce: don't access bio->bi_io_vec in copy_to_high_bio_irq Ming Lei
2016-10-29 8:08 ` [PATCH 38/60] block: bounce: convert multipage bvecs into singlepage Ming Lei
2016-10-29 8:08 ` [PATCH 39/60] bcache: debug: switch to bio_clone_sp() Ming Lei
2016-10-29 8:08 ` [PATCH 40/60] blk-merge: compute bio->bi_seg_front_size efficiently Ming Lei
2016-10-29 8:08 ` [PATCH 41/60] block: blk-merge: try to make front segments in full size Ming Lei
2016-10-29 8:08 ` [PATCH 42/60] block: use bio_for_each_segment_mp() to compute segments count Ming Lei
2016-10-29 8:08 ` [PATCH 43/60] block: use bio_for_each_segment_mp() to map sg Ming Lei
2016-10-29 8:08 ` [PATCH 44/60] block: introduce bvec_for_each_sp_bvec() Ming Lei
2016-10-29 8:08 ` [PATCH 45/60] block: bio: introduce bio_for_each_segment_all_rd() and its write pair Ming Lei
2016-10-31 13:59 ` Theodore Ts'o
2016-10-31 15:11 ` Christoph Hellwig
2016-10-31 22:50 ` Ming Lei
2016-11-02 3:01 ` Kent Overstreet
2016-10-31 22:46 ` Ming Lei
2016-10-31 23:51 ` Ming Lei
2016-11-01 14:17 ` Theodore Ts'o
2016-11-02 1:58 ` Ming Lei
2016-10-29 8:08 ` [PATCH 46/60] block: deal with dirtying pages for multipage bvec Ming Lei
2016-10-31 15:40 ` Christoph Hellwig
2016-11-01 0:19 ` Ming Lei
2016-10-29 8:08 ` [PATCH 47/60] block: convert to bio_for_each_segment_all_rd() Ming Lei
2016-10-29 8:08 ` [PATCH 48/60] fs/mpage: " Ming Lei
2016-10-29 8:08 ` [PATCH 49/60] fs/direct-io: " Ming Lei
2016-10-29 8:08 ` [PATCH 50/60] ext4: " Ming Lei
2016-10-29 8:08 ` [PATCH 51/60] xfs: " Ming Lei
2016-10-29 8:08 ` [PATCH 52/60] logfs: " Ming Lei
2016-10-29 8:08 ` [PATCH 53/60] gfs2: " Ming Lei
2016-10-29 8:08 ` [PATCH 54/60] f2fs: " Ming Lei
2016-10-29 8:08 ` [PATCH 55/60] exofs: " Ming Lei
2016-10-29 8:08 ` [PATCH 56/60] fs: crypto: " Ming Lei
2016-10-29 8:08 ` [PATCH 57/60] bcache: " Ming Lei
2016-10-29 8:08 ` [PATCH 58/60] dm-crypt: " Ming Lei
2016-10-29 8:08 ` [PATCH 59/60] fs/buffer.c: use bvec iterator to truncate the bio Ming Lei
2016-10-29 8:08 ` [PATCH 60/60] block: enable multipage bvecs Ming Lei
2016-10-31 15:25 ` [PATCH 00/60] block: support multipage bvec Christoph Hellwig
2016-10-31 22:52 ` Ming Lei
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