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

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Message-ID: <CANubcdUgYpxBqPrsOnFpGJK8S9DM46DT6hriu4kDckPMVzc-Fw@mail.gmail.com>
Date: Fri, 28 Nov 2025 16:37:54 +0800
From: Stephen Zhang <starzhangzsd@...il.com>
To: Johannes.Thumshirn@....com, hch@...radead.org, gruenba@...hat.com, 
	ming.lei@...hat.com, Gao Xiang <hsiangkao@...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
Subject: Re: [PATCH v2 00/12] Fix bio chain related issues

zhangshida <starzhangzsd@...il.com> 于2025年11月28日周五 16:32写道：
>
> 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
>

Apologies, I missed the 'h' in the email address when CC'ing
hsiangkao@...ux.alibaba.com.

Thanks,
Shida