md/raid10: consistently fail atomic writes that require splitting

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RAID10 currently handles one badblock path explicitly by failing atomic
writes with EIO. However, another badblock path can also reduce the
writable range and force the bio through bio_submit_split_bioset(),
which implicitly completes the bio with EINVAL.

Fix this by handling atomic writes in the common split check. If RAID10
determines that an atomic write would require splitting, complete the
bio with EIO.

Fixes: a1d9b4fd42 ("md/raid10: Atomic write support")
Signed-off-by: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
Reviewed-by: Yu Kuai <yukuai@fygo.io>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://patch.msgid.link/20260710101521.1714-4-abd.masalkhi@gmail.com
Signed-off-by: Yu Kuai <yukuai@fygo.io>

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Abd-Alrhman Masalkhi 2026-07-10 10:15:17 +00:00 • committed by Yu Kuai

parent 86d801e895

commit 3409bf2f96

1 changed files with 4 additions and 10 deletions

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drivers/md/raid10.c

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