diff options
| author | Ran Xiaokai <ran.xiaokai@zte.com.cn> | 2024-05-15 10:47:54 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-03 19:29:53 -0700 |
| commit | 7f83bf14603ef41a44dc907594d749a283e22c37 (patch) | |
| tree | 8052059521b936b6f0d350ff8e930967ea8ae65a /include/linux | |
| parent | 6f775463d0027733caebfb75d62ec7c4f807f834 (diff) | |
mm/huge_memory: mark racy access onhuge_anon_orders_always
huge_anon_orders_always is accessed lockless, it is better to use the
READ_ONCE() wrapper. This is not fixing any visible bug, hopefully this
can cease some KCSAN complains in the future. Also do that for
huge_anon_orders_madvise.
Link: https://lkml.kernel.org/r/20240515104754889HqrahFPePOIE1UlANHVAh@zte.com.cn
Signed-off-by: Ran Xiaokai <ran.xiaokai@zte.com.cn>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Lu Zhongjun <lu.zhongjun@zte.com.cn>
Reviewed-by: xu xin <xu.xin16@zte.com.cn>
Cc: Yang Yang <yang.yang29@zte.com.cn>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/huge_mm.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 2aa986a5cd1b..088d66a54643 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -134,8 +134,8 @@ static inline bool hugepage_flags_enabled(void) * So we don't need to look at huge_anon_orders_inherit. */ return hugepage_global_enabled() || - huge_anon_orders_always || - huge_anon_orders_madvise; + READ_ONCE(huge_anon_orders_always) || + READ_ONCE(huge_anon_orders_madvise); } static inline int highest_order(unsigned long orders) |