Re: [PATCH] Revert "Revert "md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d""

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在 2024/01/25 16:21, Song Liu 写道:
This reverts commit bed9e27baf52a09b7ba2a3714f1e24e17ced386d.

The original set [1][2] was expected to undo a suboptimal fix in [2], and
replace it with a better fix [1]. However, as reported by Dan Moulding [2]
causes an issue with raid5 with journal device.

Revert [2] for now to close the issue. We will follow up on another issue
reported by Juxiao Bi, as [2] is expected to fix it. We believe this is a
good trade-off, because the latter issue happens less freqently.

In the meanwhile, we will NOT revert [1], as it contains the right logic.

Reported-by: Dan Moulding<dan@xxxxxxxx>
Closes:https://lore.kernel.org/linux-raid/20240123005700.9302-1-dan@xxxxxxxx/
Fixes: bed9e27baf52 ("Revert "md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d"")
Cc:stable@xxxxxxxxxxxxxxx  # v5.19+
Cc: Junxiao Bi<junxiao.bi@xxxxxxxxxx>
Cc: Yu Kuai<yukuai3@xxxxxxxxxx>
Signed-off-by: Song Liu<song@xxxxxxxxxx>

[1] commit d6e035aad6c0 ("md: bypass block throttle for superblock update")
[2] commit bed9e27baf52 ("Revert "md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d"")

LGTM
Reviewed-by: Yu Kuai <yukuai3@xxxxxxxxxx>





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