diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-07-02 21:21:25 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-07-02 13:34:30 -0600 |
| commit | 7c792f33c1b3e231cfd50fea589194c593a6ce3c (patch) | |
| tree | 3f4133563ba245a682afca52250d887456d52357 | |
| parent | 4e2f62e566b5bddec00682f36a404e05a3b64b6a (diff) | |
| download | lwn-7c792f33c1b3e231cfd50fea589194c593a6ce3c.tar.gz lwn-7c792f33c1b3e231cfd50fea589194c593a6ce3c.zip | |
block: initialize current->bio_list[1] in __submit_bio_noacct_mq
bio_alloc_bioset references current->bio_list[1], so we need to
initialize it for the blk-mq submission path as well.
Fixes: ff93ea0ce763 ("block: shortcut __submit_bio_noacct for blk-mq drivers")
Reported-by: Qian Cai <cai@lca.pw>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-core.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index bf882b8d8445..9f1bf8658b61 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1155,11 +1155,10 @@ 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; + struct bio_list bio_list[2] = { }; blk_qc_t ret = BLK_QC_T_NONE; - bio_list_init(&bio_list); - current->bio_list = &bio_list; + current->bio_list = bio_list; do { WARN_ON_ONCE(bio->bi_disk != disk); @@ -1174,7 +1173,7 @@ static blk_qc_t __submit_bio_noacct_mq(struct bio *bio) } ret = blk_mq_submit_bio(bio); - } while ((bio = bio_list_pop(&bio_list))); + } while ((bio = bio_list_pop(&bio_list[0]))); current->bio_list = NULL; return ret; |