From d526916b661badeab9ba8dc05279936cf49f88f3 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 3 Jul 2013 15:02:11 -0700 Subject: UPSTREAM: include/linux/mm.h: add PAGE_ALIGNED() helper To test whether an address is aligned to PAGE_SIZE. Cc: HATAYAMA Daisuke Cc: "Eric W. Biederman" , Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds (cherry picked from commit 0fa73b86ef0797ca4fde5334117ca0b330f08030) Bug: 36007193 Change-Id: I7e912bb0dbd8c9737fb13c5b48acb54ee39dd5fc --- include/linux/mm.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index c2be3b0c6..8aecdef77 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -67,6 +67,9 @@ extern unsigned long sysctl_admin_reserve_kbytes; /* to align the pointer to the (next) page boundary */ #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE) +/* test whether an address (unsigned long or pointer) is aligned to PAGE_SIZE */ +#define PAGE_ALIGNED(addr) IS_ALIGNED((unsigned long)addr, PAGE_SIZE) + /* * Linux kernel virtual memory manager primitives. * The idea being to have a "virtual" mm in the same way -- cgit v1.2.3