From: Christoph Hellwig hch@lst.de

commit 57e95e4670d1126c103305bcf34a9442f49f6d6a upstream.

Don't use a WARN_ON when printing a potentially user triggered condition. Also don't print the partno when the block device name already includes it, and use the %pg specifier to simplify printing the block device name.

Signed-off-by: Christoph Hellwig hch@lst.de Reviewed-by: Chaitanya Kulkarni kch@nvidia.com Reviewed-by: Johannes Thumshirn johannes.thumshirn@wdc.com Link: https://lore.kernel.org/r/20220304180105.409765-2-hch@lst.de Signed-off-by: Jens Axboe axboe@kernel.dk [the formatted string layout is not changed because struct bio hasn't got bi_bdev field in stable branches older than 5.15] Signed-off-by: Fedor Pchelkin pchelkin@ispras.ru --- v1->v2: added backport comment

block/blk-core.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c index 26664f2a139e..9afb79b322fb 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -700,9 +700,7 @@ static inline bool bio_check_ro(struct bio *bio, struct hd_struct *part)

if (op_is_flush(bio->bi_opf) && !bio_sectors(bio)) return false; - - WARN_ONCE(1, - "Trying to write to read-only block-device %s (partno %d)\n", + pr_warn("Trying to write to read-only block-device %s (partno %d)\n", bio_devname(bio, b), part->partno); /* Older lvm-tools actually trigger this */ return false;