The patch titled
Subject: writeback: remove redundant checks for root memcg
has been added to the -mm mm-unstable branch. Its filename is
writeback-remove-redundant-checks-for-root-memcg.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/writeback-remove-redundant-checks-for-root-memcg.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Jinliang Zheng <alexjlzheng@xxxxxxxxxxx>
Subject: writeback: remove redundant checks for root memcg
Date: Tue, 8 Aug 2023 16:44:32 +0800
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@xxxxxxxxxxx
Signed-off-by: Jinliang Zheng <alexjlzheng@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/backing-dev.c | 3 ---
1 file changed, 3 deletions(-)
--- a/mm/backing-dev.c~writeback-remove-redundant-checks-for-root-memcg
+++ a/mm/backing-dev.c
@@ -732,9 +732,6 @@ struct bdi_writeback *wb_get_create(stru
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));
_
Patches currently in -mm which might be from alexjlzheng@xxxxxxxxxxx are
writeback-remove-redundant-checks-for-root-memcg.patch
