blk-mq: Make it safe to use RCU to iterate over blk_mq_tag_set.tag_list

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Since the next patch in this series will use RCU to iterate over
tag_list, make this safe. Add lockdep_assert_held() statements
in functions that iterate over tag_list to make clear that using
list_for_each_entry() instead of list_for_each_entry_rcu() is
fine in these functions.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

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Bart Van Assche 2017-04-07 11:16:49 -07:00 • committed by Jens Axboe

parent d945a365a0

commit 705cda97ee

1 changed files with 9 additions and 2 deletions

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block/blk-mq.c

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