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Commit 0fa73b86 authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds
Browse files

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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent d702909f

include/linux/mm.h

+3 −0
Original line number Diff line number Diff line
@@ -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