Commit 98ba6af7 authored Feb 16, 2017 by Ilya Dryomov

crush: do is_out test only if we do not collide



The is_out() test may require an additional hashing operation, so we
should skip it whenever possible.

Reflects ceph.git commit db107cc7f15cf2481894add325dc93e33479f529.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

parent df963ea8

net/ceph/crush/mapper.c

+1 −3

Original line number	Diff line number	Diff line
		@@ -552,14 +552,12 @@ static int crush_choose_firstn(const struct crush_map *map,
		}
		}

		if (!reject) {
		if (!reject && !collide) {
		/* out? */
		if (itemtype == 0)
		reject = is_out(map, weight,
		weight_max,
		item, x);
		else
		reject = 0;
		}

		reject: