mm/mincore: use offset_in_page macro

linux/mm.h provides offset_in_page() macro.  Let's use already predefined
macro instead of (addr & ~PAGE_MASK).

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/mincore.c b/mm/mincore.c
index be25efde64a4098c11eb126922a0d20b04bbadce..14bb9fb37f0ca4d91989bb9e37c269fbd6ec7d98 100644 (file)
--- a/mm/mincore.c
+++ b/mm/mincore.c
@@ -234,7 +234,7 @@ SYSCALL_DEFINE3(mincore, unsigned long, start, size_t, len,
 
        /* This also avoids any overflows on PAGE_CACHE_ALIGN */
        pages = len >> PAGE_SHIFT;
-       pages += (len & ~PAGE_MASK) != 0;
+       pages += (offset_in_page(len)) != 0;
 
        if (!access_ok(VERIFY_WRITE, vec, pages))
                return -EFAULT;