linux-kernel - [PATCH v2 00/12] Fix bio chain related issues

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Message-Id: <20251128083219.2332407-1-zhangshida@kylinos.cn>
Date: Fri, 28 Nov 2025 16:32:07 +0800
From: zhangshida <starzhangzsd@...il.com>
To: Johannes.Thumshirn@....com,
	hch@...radead.org,
	gruenba@...hat.com,
	ming.lei@...hat.com,
	siangkao@...ux.alibaba.com
Cc: linux-block@...r.kernel.org,
	linux-bcache@...r.kernel.org,
	nvdimm@...ts.linux.dev,
	virtualization@...ts.linux.dev,
	linux-nvme@...ts.infradead.org,
	gfs2@...ts.linux.dev,
	ntfs3@...ts.linux.dev,
	linux-xfs@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	zhangshida@...inos.cn,
	starzhangzsd@...il.com
Subject: [PATCH v2 00/12] Fix bio chain related issues

From: Shida Zhang <zhangshida@...inos.cn>

Hi all,

While investigating another problem [mentioned in v1], we identified
some buggy code in the bio chain handling logic. This series addresses
those issues and performs related code cleanup.

Patches 1-4 fix incorrect usage of bio_chain_endio().
Patches 5-12 clean up repetitive code patterns in bio chain handling.

v2:
- Added fix for bcache.
- Added BUG_ON() in bio_chain_endio().
- Enhanced commit messages for each patch

v1:
https://lore.kernel.org/all/20251121081748.1443507-1-zhangshida@kylinos.cn/


Shida Zhang (12):
  block: fix incorrect logic in bio_chain_endio
  block: prevent race condition on bi_status in __bio_chain_endio
  md: bcache: fix improper use of bi_end_io
  block: prohibit calls to bio_chain_endio
  block: export bio_chain_and_submit
  gfs2: Replace the repetitive bio chaining code patterns
  xfs: Replace the repetitive bio chaining code patterns
  block: Replace the repetitive bio chaining code patterns
  fs/ntfs3: Replace the repetitive bio chaining code patterns
  zram: Replace the repetitive bio chaining code patterns
  nvdimm: Replace the repetitive bio chaining code patterns
  nvmet: use bio_chain_and_submit to simplify bio chaining

 block/bio.c                       | 15 ++++++++++++---
 drivers/block/zram/zram_drv.c     |  3 +--
 drivers/md/bcache/request.c       |  6 +++---
 drivers/nvdimm/nd_virtio.c        |  3 +--
 drivers/nvme/target/io-cmd-bdev.c |  3 +--
 fs/gfs2/lops.c                    |  3 +--
 fs/ntfs3/fsntfs.c                 | 12 ++----------
 fs/squashfs/block.c               |  3 +--
 fs/xfs/xfs_bio_io.c               |  3 +--
 fs/xfs/xfs_buf.c                  |  3 +--
 fs/xfs/xfs_log.c                  |  3 +--
 11 files changed, 25 insertions(+), 32 deletions(-)

-- 
2.34.1