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

Mohamed Khalfella
2025-12-04T18:12:40Z

The patch in v2 converted set->tag_list_lock to a rwsemaphore. It was
pointed out this could result in a different kind of deadlock. This
patch uses RCU to protect set->tag_list when accessed from [un]quiesce
code.

v2 - https://lore.kernel.org/all/20251117202414.4071380-1-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 | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)

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2.51.2