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| author | Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> | 2022-11-22 17:49:17 +0900 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-11-22 06:10:54 -0700 |
| commit | d4b2e0d433769cb7c87e4c93dc048733388d1c46 (patch) | |
| tree | 4c51983db9288f8e21fe7c6a1718cf83a2937656 | |
| parent | 3569788c08235c6f3e9e6ca724b2df44787ff487 (diff) | |
| download | linux-d4b2e0d433769cb7c87e4c93dc048733388d1c46.tar.bz2 | |
block: fix missing nr_hw_queues update in blk_mq_realloc_tag_set_tags
The commit ee9d55210c2f ("blk-mq: simplify blk_mq_realloc_tag_set_tags")
cleaned up the function blk_mq_realloc_tag_set_tags. After this change,
the function does not update nr_hw_queues of struct blk_mq_tag_set when
new nr_hw_queues value is smaller than original. This results in failure
of queue number change of block devices. To avoid the failure, add the
missing nr_hw_queues update.
Fixes: ee9d55210c2f ("blk-mq: simplify blk_mq_realloc_tag_set_tags")
Reported-by: Chaitanya Kulkarni <chaitanyak@nvidia.com>
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Link: https://lore.kernel.org/linux-block/20221118140640.featvt3fxktfquwh@shindev/
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20221122084917.2034220-1-shinichiro.kawasaki@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-mq.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index ee16b4c34c6a..cdd8efcec191 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -4381,7 +4381,7 @@ static int blk_mq_realloc_tag_set_tags(struct blk_mq_tag_set *set, struct blk_mq_tags **new_tags; if (set->nr_hw_queues >= new_nr_hw_queues) - return 0; + goto done; new_tags = kcalloc_node(new_nr_hw_queues, sizeof(struct blk_mq_tags *), GFP_KERNEL, set->numa_node); @@ -4393,8 +4393,8 @@ static int blk_mq_realloc_tag_set_tags(struct blk_mq_tag_set *set, sizeof(*set->tags)); kfree(set->tags); set->tags = new_tags; +done: set->nr_hw_queues = new_nr_hw_queues; - return 0; } |