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blk-mq: Document tags_srcu member in blk_mq_tag_set structure

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Add missing documentation for the tags_srcu member that was introduced
to defer freeing of tags page_list to prevent use-after-free when
iterating tags.

Fixes htmldocs warning:
WARNING: include/linux/blk-mq.h:536 struct member 'tags_srcu' not described in 'blk_mq_tag_set'

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei
2025-09-09 20:33:10 +08:00
committed by Jens Axboe
parent d86eaa0f3c
commit 199c9a8d26
1 changed files with 2 additions and 0 deletions
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2
include/linux/blk-mq.h
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@@ -507,6 +507,8 @@ enum hctx_type {
* request_queue.tag_set_list.
* @srcu: Use as lock when type of the request queue is blocking
* (BLK_MQ_F_BLOCKING).
* @tags_srcu: SRCU used to defer freeing of tags page_list to prevent
* use-after-free when iterating tags.
* @update_nr_hwq_lock:
* Synchronize updating nr_hw_queues with add/del disk &
* switching elevator.