From 9af7c7426c2e49bad77cf7494fea85a773d1ded6 Mon Sep 17 00:00:00 2001 From: Jinliang Zheng Date: Tue, 8 Aug 2023 16:44:32 +0800 Subject: writeback: remove redundant checks for root memcg The check for root memcg will be done in wb_get_lookup(), so remove the redundant one to simplify the code. Link: https://lkml.kernel.org/r/20230808084431.1632934-1-alexjlzheng@tencent.com Signed-off-by: Jinliang Zheng Signed-off-by: Andrew Morton --- mm/backing-dev.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/mm/backing-dev.c b/mm/backing-dev.c index fc44bfbf785e..1e3447bccdb1 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -732,9 +732,6 @@ struct bdi_writeback *wb_get_create(struct backing_dev_info *bdi, might_alloc(gfp); - if (!memcg_css->parent) - return &bdi->wb; - do { wb = wb_get_lookup(bdi, memcg_css); } while (!wb && !cgwb_create(bdi, memcg_css, gfp)); -- cgit v1.2.3