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authorChristoph Hellwig <hch@lst.de>2020-07-07 20:45:03 +0300
committerJens Axboe <axboe@kernel.dk>2020-07-07 20:45:59 +0300
commit0e6e255e7a58cdf4ee4163f83deeb5ce4946051e (patch)
tree53c192505570b701bdd5ecdf539ef68850f865ad /block/blk-core.c
parent7c792f33c1b3e231cfd50fea589194c593a6ce3c (diff)
downloadlinux-0e6e255e7a58cdf4ee4163f83deeb5ce4946051e.tar.xz
block: remove a bogus warning in __submit_bio_noacct_mq
If blk_mq_submit_bio flushes the plug list, bios for other disks can show up on current->bio_list. As that doesn't involve any stacking of block device it is entirely harmless and we should not warn about this case. Fixes: ff93ea0ce763 ("block: shortcut __submit_bio_noacct for blk-mq drivers") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-core.c')
-rw-r--r--block/blk-core.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 9f1bf8658b61..93104c7470e8 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1154,14 +1154,13 @@ static blk_qc_t __submit_bio_noacct(struct bio *bio)
static blk_qc_t __submit_bio_noacct_mq(struct bio *bio)
{
- struct gendisk *disk = bio->bi_disk;
struct bio_list bio_list[2] = { };
blk_qc_t ret = BLK_QC_T_NONE;
current->bio_list = bio_list;
do {
- WARN_ON_ONCE(bio->bi_disk != disk);
+ struct gendisk *disk = bio->bi_disk;
if (unlikely(bio_queue_enter(bio) != 0))
continue;