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raid5-cache: add another check conditon before replaying one stripe

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New stripe that was just allocated has no STRIPE_R5C_CACHING state too,
add this check condition could avoid unnecessary replaying for empty stripe.

r5l_recovery_replay_one_stripe would reset stripe for any case, delete it
to make code more clean.

Signed-off-by: Zhengyuan Liu <liuzhengyuan@kylinos.cn>
Signed-off-by: Shaohua Li <shli@fb.com>
This commit is contained in:
Zhengyuan Liu 2016-11-26 10:57:13 +08:00 • committed by Shaohua Li
commit f7b7bee75e
1 changed files with 2 additions and 2 deletions
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4
drivers/md/raid5-cache.c
View file

@ -1887,9 +1887,9 @@ r5c_recovery_analyze_meta_block(struct r5l_log *log,
}
if (payload->header.type == R5LOG_PAYLOAD_DATA) {
if (!test_bit(STRIPE_R5C_CACHING, &sh->state)) {
if (!test_bit(STRIPE_R5C_CACHING, &sh->state) &&
test_bit(R5_Wantwrite, &sh->dev[sh->pd_idx].flags)) {
r5l_recovery_replay_one_stripe(conf, sh, ctx);
r5l_recovery_reset_stripe(sh);
sh->log_start = ctx->pos;
list_move_tail(&sh->lru, cached_stripe_list);
}