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| author |   Songtang Liu <liusongtang@bytedance.com> | 2025-04-02 03:41:16 -0400 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2025-05-11 17:48:07 -0700 |
| commit | cd348c5e6af3b4220eb37a08fdaf9c924a2e1c19 (patch) | |
| tree | d4f935b7cd2a51e785cb49e038e93df0a3e4cfb3 /mm/page_alloc.c | |
| parent | memcg, oom: do not bypass oom killer for dying tasks (diff) | |
| download | linux-rng-cd348c5e6af3b4220eb37a08fdaf9c924a2e1c19.tar.xz linux-rng-cd348c5e6af3b4220eb37a08fdaf9c924a2e1c19.zip | |
mm: page_alloc: remove redundant READ_ONCE
In the current code, batch is a local variable, and it cannot be
concurrently modified. It's unnecessary to use READ_ONCE here, so remove
it.
Link: https://lkml.kernel.org/r/CAA=HWd1kn01ym8YuVFuAqK2Ggq3itEGkqX8T6eCXs_C7tiv-Jw@mail.gmail.com
Fixes: 51a755c56dc0 ("mm: tune PCP high automatically")
Signed-off-by: Songtang Liu <liusongtang@bytedance.com>
Reviewed-by: Qi Zheng <zhengqi.arch@bytedance.com>
Reviewed-by: Huang Ying <ying.huang@linux.alibaba.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta@amd.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 8258349e49ac..1ee0e8265888 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2675,7 +2675,7 @@ static void free_frozen_page_commit(struct zone *zone, free_high = (pcp->free_count >= batch && (pcp->flags & PCPF_PREV_FREE_HIGH_ORDER) && (!(pcp->flags & PCPF_FREE_HIGH_BATCH) || - pcp->count >= READ_ONCE(batch))); + pcp->count >= batch)); pcp->flags |= PCPF_PREV_FREE_HIGH_ORDER; } else if (pcp->flags & PCPF_PREV_FREE_HIGH_ORDER) { pcp->flags &= ~PCPF_PREV_FREE_HIGH_ORDER; |