From 3a6da69a93f599588b9bfaf3bee2c36ec938c9a8 Mon Sep 17 00:00:00 2001 From: Chris Down Date: Thu, 3 Oct 2019 14:41:06 +0100 Subject: [PATCH] memory-util: Add PAGE_ALIGN_DOWN For example, cgroup v2 rounds down to the previous page when returning memory limits. --- src/basic/memory-util.h | 1 + 1 file changed, 1 insertion(+) diff --git a/src/basic/memory-util.h b/src/basic/memory-util.h index 9cb8ac3c10f..46a6907a0cf 100644 --- a/src/basic/memory-util.h +++ b/src/basic/memory-util.h @@ -11,6 +11,7 @@ size_t page_size(void) _pure_; #define PAGE_ALIGN(l) ALIGN_TO((l), page_size()) +#define PAGE_ALIGN_DOWN(l) (l & ~(page_size() - 1)) /* Normal memcpy requires src to be nonnull. We do nothing if n is 0. */ static inline void memcpy_safe(void *dst, const void *src, size_t n) { -- 2.47.3