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blk-core: use pr_warn_ratelimited() in bio_check_ro()

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If one of the underlying disks of raid or dm is set to read-only, then
each io will generate new log, which will cause message storm. This
environment is indeed problematic, however we can't make sure our
naive custormer won't do this, hence use pr_warn_ratelimited() to
prevent message storm in this case.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Fixes: 57e95e4670 ("block: fix and cleanup bio_check_ro")
Signed-off-by: Ye Bin <yebin10@huawei.com>
Link: https://lore.kernel.org/r/20231107111247.2157820-1-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Yu Kuai 2023-11-07 19:12:47 +08:00 committed by Jens Axboe
parent 327462725b
commit 1b0a151c10
1 changed files with 2 additions and 2 deletions
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block/blk-core.c
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@ -501,7 +501,7 @@ static inline void bio_check_ro(struct bio *bio)
if (op_is_write(bio_op(bio)) && bdev_read_only(bio->bi_bdev)) {
if (op_is_flush(bio->bi_opf) && !bio_sectors(bio))
return;
pr_warn("Trying to write to read-only block-device %pg\n",
pr_warn_ratelimited("Trying to write to read-only block-device %pg\n",
bio->bi_bdev);
/* Older lvm-tools actually trigger this */
}