raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2025-12-27 20:42:52 +00:00
Code Issues Projects Releases Wiki Activity

mm: page_counters: initialize usage using ATOMIC_LONG_INIT() macro

Browse Source 
When a page_counter structure is initialized, there is no need to use an
atomic set operation to initialize the usage counter because at this point
the structure is not visible to anybody else.  ATOMIC_LONG_INIT() is what
should be used in such cases.

Link: https://lkml.kernel.org/r/20240726203110.1577216-4-roman.gushchin@linux.dev
Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Roman Gushchin
2024-07-26 20:31:10 +00:00
committed by Andrew Morton
parent 941ce63523
commit 57979fabff
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/page_counter.h
View File

@@ -52,7 +52,7 @@ static inline void page_counter_init(struct page_counter *counter,
struct page_counter *parent,
bool protection_support)
{
atomic_long_set(&counter->usage, 0);
counter->usage = (atomic_long_t)ATOMIC_LONG_INIT(0);
counter->max = PAGE_COUNTER_MAX;
counter->parent = parent;
counter->protection_support = protection_support;