# \[PATCH 06/13\] READ\_ONCE: Remove smp\_read\_barrier\_depends() invocation - From: Will Deacon \ - Date: 2019-11-08 17:02:30 - List: linux-alpha - Page: https://ratatoskr.run/linux-alpha/2019/11/5770158 - Thread: https://ratatoskr.run/linux-alpha/2019/11/5770140/t.md ```text Alpha overrides '__read_once_size_n()' directly, so there's no need to use 'smp_read_barrier_depends()' in the core code. Signed-off-by: Will Deacon --- include/asm-generic/rwonce.h | 1 - 1 file changed, 1 deletion(-) diff --git a/include/asm-generic/rwonce.h b/include/asm-generic/rwonce.h index 2c2ac0948c94..2e3289268a89 100644 --- a/include/asm-generic/rwonce.h +++ b/include/asm-generic/rwonce.h @@ -102,7 +102,6 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s __read_once_size(&(x), __u.__c, sizeof(x)); \ else \ __read_once_size_nocheck(&(x), __u.__c, sizeof(x)); \ - smp_read_barrier_depends(); /* Enforce dependency ordering from x */ \ __u.__val; \ }) #define READ_ONCE(x) __READ_ONCE(x, 1) -- 2.24.0.rc1.363.gb1bccd3e3d-goog ```