diff options
| author | Andrew Morton <akpm@linux-foundation.org> | 2013-07-03 15:02:11 -0700 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2014-10-02 17:19:26 +0200 |
| commit | 7ebda0194ff1872ef36d93cf309cc4043ffba4ee (patch) | |
| tree | 210a1cccdec8f56be3d10be8f928106e2df376c6 | |
| parent | ad4ef3e73e40166a585d71f36a521f9f6d5db3c4 (diff) | |
include/linux/mm.h: add PAGE_ALIGNED() helper
To test whether an address is aligned to PAGE_SIZE.
Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 0fa73b86ef0797ca4fde5334117ca0b330f08030)
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| -rw-r--r-- | include/linux/mm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index e0c8528a41a4..f42c5baa47cc 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -52,6 +52,9 @@ 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 |