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| author | Junxiao Bi <junxiao.bi@oracle.com> | 2023-11-08 10:22:16 -0800 |
|---|---|---|
| committer | Song Liu <song@kernel.org> | 2023-11-27 15:46:51 -0800 |
| commit | bed9e27baf52a09b7ba2a3714f1e24e17ced386d (patch) | |
| tree | b6c8af2f11aeff72555ed8b614a3af82756ec03e /mm | |
| parent | d6e035aad6c09991da1c667fb83419329a3baed8 (diff) | |
| download | linux-stable-bed9e27baf52a09b7ba2a3714f1e24e17ced386d.tar.gz linux-stable-bed9e27baf52a09b7ba2a3714f1e24e17ced386d.tar.bz2 linux-stable-bed9e27baf52a09b7ba2a3714f1e24e17ced386d.zip | |
Revert "md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d"
This reverts commit 5e2cf333b7bd5d3e62595a44d598a254c697cd74.
That commit introduced the following race and can cause system hung.
md_write_start: raid5d:
// mddev->in_sync == 1
set "MD_SB_CHANGE_PENDING"
// running before md_write_start wakeup it
waiting "MD_SB_CHANGE_PENDING" cleared
>>>>>>>>> hung
wakeup mddev->thread
...
waiting "MD_SB_CHANGE_PENDING" cleared
>>>> hung, raid5d should clear this flag
but get hung by same flag.
The issue reverted commit fixing is fixed by last patch in a new way.
Fixes: 5e2cf333b7bd ("md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d")
Cc: stable@vger.kernel.org # v5.19+
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20231108182216.73611-2-junxiao.bi@oracle.com
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions