Commit a67549c8 authored Jun 19, 2020 by Luis Chamberlain Committed by Jens Axboe Jun 24, 2020

blktrace: annotate required lock on do_blk_trace_setup()



Ensure it is clear which lock is required on do_blk_trace_setup().

Suggested-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent e8c7d14a

kernel/trace/blktrace.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -483,6 +483,8 @@ static int do_blk_trace_setup(struct request_queue q, char name, dev_t dev,
		struct dentry *dir = NULL;
		int ret;

		lockdep_assert_held(&q->blk_trace_mutex);

		if (!buts->buf_size \|\| !buts->buf_nr)
		return -EINVAL;

Admin message