mm/madvise.c: use PAGE_ALIGN[ED] for range checking

[linux.git] / mm / madvise.c

diff --git a/mm/madvise.c b/mm/madvise.c
index e808dbeb27f39bbd9cce68f678c531ac334788fa..bcdb6a04278794ca97eea24cb59e8b7f04ab7111 100644 (file)
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -1059,9 +1059,9 @@ SYSCALL_DEFINE3(madvise, unsigned long, start, size_t, len_in, int, behavior)
        if (!madvise_behavior_valid(behavior))
                return error;
 
-       if (start & ~PAGE_MASK)
+       if (!PAGE_ALIGNED(start))
                return error;
-       len = (len_in + ~PAGE_MASK) & PAGE_MASK;
+       len = PAGE_ALIGN(len_in);
 
        /* Check to see whether len was rounded up from small -ve to zero */
        if (len_in && !len)