md/raid10: avoid deadlock on recovery.

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When disk failure happens and the array has a spare drive, resync thread
kicks in and starts to refill the spare. However it may get blocked by
a retry thread that resubmits failed IO to a mirror and itself can get
blocked on a barrier raised by the resync thread.

Acked-by: Nigel Croxon <ncroxon@redhat.com>
Signed-off-by: Vitaly Mayatskikh <vmayatskikh@digitalocean.com>
Signed-off-by: Song Liu <songliubraving@fb.com>

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Vitaly Mayatskikh 2020-03-03 13:14:40 -05:00 • committed by Song Liu

parent c333f9495c

commit fe630de009

1 changed files with 11 additions and 3 deletions

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drivers/md/raid10.c

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