dm verity: skip verity work if I/O error when system is shutting down

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[ Upstream commit 252bd12563 ]

If emergency system shutdown is called, like by thermal shutdown,
a dm device could be alive when the block device couldn't process
I/O requests anymore. In this state, the handling of I/O errors
by new dm I/O requests or by those already in-flight can lead to
a verity corruption state, which is a misjudgment.

So, skip verity work in response to I/O error when system is shutting
down.

Signed-off-by: Hyeongseok Kim <hyeongseok@gmail.com>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Hyeongseok Kim 2020-12-03 09:46:59 +09:00 • committed by Greg Kroah-Hartman

parent 610d2fa0ec

commit aff18aa806

1 changed files with 11 additions and 1 deletions

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drivers/md/dm-verity-target.c

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