[RFC PATCH v2 10/11] bfq: remove unnecessary initialization logic
From: brookxu <hidden>
Date: 2021-03-12 11:09:54
Also in:
linux-block, lkml
Subsystem:
bfq i/o scheduler, block layer, control group - block io controller (blkio), the rest · Maintainers:
Yu Kuai, Jens Axboe, Tejun Heo, Josef Bacik, Linus Torvalds
From: Chunguang Xu <redacted> Since we will initialize sched_data.service_tree[] in bfq_init_root_group(), bfq_create_group_hierarchy() can ignore this part of the initialization, which can avoid repeated initialization. Signed-off-by: Chunguang Xu <redacted> --- block/bfq-cgroup.c | 4 ---- 1 file changed, 4 deletions(-)
diff --git a/block/bfq-cgroup.c b/block/bfq-cgroup.c
index ab4bc410e635..05054e1b5d97 100644
--- a/block/bfq-cgroup.c
+++ b/block/bfq-cgroup.c@@ -1514,15 +1514,11 @@ void bfqg_and_blkg_put(struct bfq_group *bfqg) {} struct bfq_group *bfq_create_group_hierarchy(struct bfq_data *bfqd, int node) { struct bfq_group *bfqg; - int i; bfqg = kmalloc_node(sizeof(*bfqg), GFP_KERNEL | __GFP_ZERO, node); if (!bfqg) return NULL; - for (i = 0; i < BFQ_IOPRIO_CLASSES; i++) - bfqg->sched_data.service_tree[i] = BFQ_SERVICE_TREE_INIT; - return bfqg; } #endif /* CONFIG_BFQ_GROUP_IOSCHED */
--
2.30.0