block: Use RCU in blk_mq_[un]quiesce_tagset() instead of set->tag_list_lock

[PATCH v4 0/1] block: Use RCU in blk_mq_[un]quiesce_tagset() instead of set->tag_list_lock

Posted by Mohamed Khalfella 1 week, 3 days ago

Changes from v3:
- Fixed typos in commit message.
- Updated stacktrace in commit message with one taken from recent kernel.
- Added Fixes: tag to commit message.
- Deleted synchronize_rcu() (added in v3) and pre-existing
  INIT_LIST_HEAD(&q->tag_set_list) call in blk_mq_del_queue_tag_set().
- Updated the commit message to mention why it is safe to delete
  INIT_LIST_HEAD(&q->tag_set_list) in blk_mq_del_queue_tag_set().

v3 - https://lore.kernel.org/all/20251204181212.1484066-1-mkhalfella@purestorage.com/

Mohamed Khalfella (1):
  block: Use RCU in blk_mq_[un]quiesce_tagset() instead of
    set->tag_list_lock

 block/blk-mq.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

-- 
2.51.2

Re: [PATCH v4 0/1] block: Use RCU in blk_mq_[un]quiesce_tagset() instead of set->tag_list_lock

Posted by Jens Axboe 6 days, 4 hours ago

On Fri, 05 Dec 2025 13:17:01 -0800, Mohamed Khalfella wrote:
> Changes from v3:
> - Fixed typos in commit message.
> - Updated stacktrace in commit message with one taken from recent kernel.
> - Added Fixes: tag to commit message.
> - Deleted synchronize_rcu() (added in v3) and pre-existing
>   INIT_LIST_HEAD(&q->tag_set_list) call in blk_mq_del_queue_tag_set().
> - Updated the commit message to mention why it is safe to delete
>   INIT_LIST_HEAD(&q->tag_set_list) in blk_mq_del_queue_tag_set().
> 
> [...]

Applied, thanks!

[1/1] block: Use RCU in blk_mq_[un]quiesce_tagset() instead of set->tag_list_lock
      commit: 59e25ef2b413c72da6686d431e7759302cfccafa

Best regards,
-- 
Jens Axboe