Commit 199c9a8d authored by Ming Lei's avatar Ming Lei Committed by Jens Axboe
Browse files

blk-mq: Document tags_srcu member in blk_mq_tag_set structure 



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: default avatarStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: default avatarMing Lei <ming.lei@redhat.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent d86eaa0f

include/linux/blk-mq.h

+2 −0
Original line number Diff line number Diff line
@@ -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.