6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yu Kuai <yukuai3@xxxxxxxxxx>
[ Upstream commit 67d995e069535c32829f5d368d919063492cec6e ]
Commit 1b0a151c10a6 ("blk-core: use pr_warn_ratelimited() in
bio_check_ro()") fix message storm by limit the rate, however, there
will still be lots of message in the long term. Fix it better by warn
once for each partition.
Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Link: https://lore.kernel.org/r/20231128123027.971610-3-yukuai1@xxxxxxxxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
block/blk-core.c | 14 +++++++++++---
include/linux/blk_types.h | 1 +
2 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index fdf25b8d6e78..2eca76ccf4ee 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -501,9 +501,17 @@ 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_ratelimited("Trying to write to read-only block-device %pg\n",
- bio->bi_bdev);
- /* Older lvm-tools actually trigger this */
+
+ if (bio->bi_bdev->bd_ro_warned)
+ return;
+
+ bio->bi_bdev->bd_ro_warned = true;
+ /*
+ * Use ioctl to set underlying disk of raid/dm to read-only
+ * will trigger this.
+ */
+ pr_warn("Trying to write to read-only block-device %pg\n",
+ bio->bi_bdev);
}
}
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index d5c5e59ddbd2..92c8997b1938 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -69,6 +69,7 @@ struct block_device {
#ifdef CONFIG_FAIL_MAKE_REQUEST
bool bd_make_it_fail;
#endif
+ bool bd_ro_warned;
/*
* keep this out-of-line as it's both big and not needed in the fast
* path
--
2.43.0
