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authorMing Lei <ming.lei@redhat.com>2025-05-05 22:18:01 +0800
committerJens Axboe <axboe@kernel.dk>2025-05-06 07:43:43 -0600
commit0a47d2b433ad275236d625b9f09c6d3672329712 (patch)
treef941ca698f07c1ef6407a43e6f61d5511c351fef /tools/perf/scripts/python/export-to-postgresql.py
parent9dc7a882ce96482bfff3dba51dadcbe68daeac6c (diff)
block: don't acquire ->elevator_lock in blk_mq_map_swqueue and blk_mq_realloc_hw_ctxs
Both blk_mq_map_swqueue() and blk_mq_realloc_hw_ctxs() are called before the request queue is added to tagset list, so the two won't run concurrently with blk_mq_update_nr_hw_queues(). When the two functions are only called from queue initialization or blk_mq_update_nr_hw_queues(), elevator switch can't happen. So remove ->elevator_lock uses from the two functions. Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Nilay Shroff <nilay@linux.ibm.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20250505141805.2751237-24-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
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