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Commit 38c91407 authored by Hou Tao's avatar Hou Tao Committed by Jens Axboe
Browse files

bfq: fix typos in comments about B-WF2Q+ algorithm 



The start time of eligible entity should be less than or equal to
the current virtual time, and the entity in idle tree has a finish
time being greater than the current virtual time.

Signed-off-by: default avatarHou Tao <houtao1@huawei.com>
Reviewed-by: default avatarPaolo Valente <paolo.valente@linaro.org>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 3b06b1a7

block/bfq-iosched.h

+1 −1
Original line number Diff line number Diff line
@@ -52,7 +52,7 @@ struct bfq_entity; 
struct bfq_service_tree {

	/* tree for active entities (i.e., those backlogged) */

	struct rb_root active;

	/* tree for idle entities (i.e., not backlogged, with V <= F_i)*/

	/* tree for idle entities (i.e., not backlogged, with V < F_i)*/

	struct rb_root idle;



	/* idle entity with minimum F_i */

block/bfq-wf2q.c

+1 −1
Original line number Diff line number Diff line
@@ -1297,7 +1297,7 @@ static void bfq_update_vtime(struct bfq_service_tree *st, u64 new_value) 
 *

 * This function searches the first schedulable entity, starting from the

 * root of the tree and going on the left every time on this side there is

 * a subtree with at least one eligible (start >= vtime) entity. The path on

 * a subtree with at least one eligible (start <= vtime) entity. The path on

 * the right is followed only if a) the left subtree contains no eligible

 * entities and b) no eligible entity has been found yet.

 */