Re: [PATCH V2 0/5] blk-mq: Replace tags->lock with SRCU for tag iterators
From: Martin K. Petersen <hidden>
Date: 2025-08-31 00:36:04
Ming,
Replace the spinlock in blk_mq_find_and_get_req() with an SRCU read lock around the tag iterators. Avoids scsi_host_busy() lockup during scsi host blocked in case of big cpu cores & deep queue depth.
Reviewed-by: Martin K. Petersen <redacted> -- Martin K. Petersen