mm/slub: mark racy accesses on slab->slabs

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The reads of slab->slabs are racy because it may be changed by
put_cpu_partial concurrently. In slabs_cpu_partial_show() and
show_slab_objects(), slab->slabs is only used for showing information.

Data-racy reads from shared variables that are used only for diagnostic
purposes should typically use data_race(), since it is normally not a
problem if the values are off by a little.

This patch is aimed at reducing the number of benign races reported by
KCSAN in order to focus future debugging effort on harmful races.

Signed-off-by: linke li <lilinke99@qq.com>
Reviewed-by: Chengming Zhou <chengming.zhou@linux.dev>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>

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linke li 2024-03-21 11:48:15 +08:00 • committed by Vlastimil Babka

parent ad7c5ebead

commit 87654cf7a9

1 changed files with 3 additions and 3 deletions

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mm/slub.c

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