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md/raid5: let stripe batch bm_seq comparison wrap-safe

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Once the 32-bit seq wraps, a newer bm_seq can look smaller
than old, so .. covert to wrap-safe calculate way.

Signed-off-by: Chen Cheng <chencheng@fnnas.com>
Link: https://patch.msgid.link/20260618025735.915113-1-chencheng@fnnas.com
Signed-off-by: Yu Kuai <yukuai@fygo.io>
This commit is contained in:
Chen Cheng 2026-06-18 10:57:35 +08:00 committed by Yu Kuai
parent 601d3c21b2
commit 00e93faf4c
1 changed files with 1 additions and 1 deletions
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2
drivers/md/raid5.c
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@ -996,7 +996,7 @@ static void stripe_add_to_batch_list(struct r5conf *conf,
if (test_and_clear_bit(STRIPE_BIT_DELAY, &sh->state)) {
int seq = sh->bm_seq;
if (test_bit(STRIPE_BIT_DELAY, &sh->batch_head->state) &&
sh->batch_head->bm_seq > seq)
sh->batch_head->bm_seq - seq > 0)
seq = sh->batch_head->bm_seq;
set_bit(STRIPE_BIT_DELAY, &sh->batch_head->state);
sh->batch_head->bm_seq = seq;