Commit 61445b56 authored by Omar Sandoval's avatar Omar Sandoval Committed by Jens Axboe
Browse files

sbitmap: warn if using smaller shallow depth than was setup 



Make sure the user passed the right value to
sbitmap_queue_min_shallow_depth().

Acked-by: default avatarPaolo Valente <paolo.valente@linaro.org>
Signed-off-by: default avatarOmar Sandoval <osandov@fb.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 28820640

lib/sbitmap.c

+2 −0
Original line number Diff line number Diff line
@@ -402,6 +402,8 @@ int __sbitmap_queue_get_shallow(struct sbitmap_queue *sbq, 
	unsigned int hint, depth;

	int nr;



	WARN_ON_ONCE(shallow_depth < sbq->min_shallow_depth);



	hint = this_cpu_read(*sbq->alloc_hint);

	depth = READ_ONCE(sbq->sb.depth);

	if (unlikely(hint >= depth)) {