From: Shida Zhang <zhangshida@kylinos.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 1-3 fix incorrect usage of bio_chain_endio().
Patches 4-9 clean up repetitive code patterns in bio chain handling.

v3:
- Remove the dead code in bio_chain_endio and drop patch 1 in v2 
- Refined the __bio_chain_endio changes with minor modifications (was
  patch 02 in v2).
- Dropped cleanup patches 06 and 12 from v2 due to an incorrect 'prev'
  and 'new' order.

v2:
- Added fix for bcache.
- Added BUG_ON() in bio_chain_endio().
- Enhanced commit messages for each patch
https://lore.kernel.org/all/20251128083219.2332407-1-zhangshida@kylinos.cn/

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

Shida Zhang (9):
  md: bcache: fix improper use of bi_end_io
  block: prohibit calls to bio_chain_endio
  block: prevent race condition on bi_status in __bio_chain_endio
  block: export bio_chain_and_submit
  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

 block/bio.c                   | 12 +++++++++---
 drivers/block/zram/zram_drv.c |  3 +--
 drivers/md/bcache/request.c   |  6 +++---
 drivers/nvdimm/nd_virtio.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 +--
 9 files changed, 20 insertions(+), 28 deletions(-)

-- 
2.34.1