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

Improve readability, no functional change. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Wei Yang <[email protected]> Reviewed-by: Andrew Morton <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
vieko · Dec 1, 2019 · df6c650 · df6c650
1 parent d3cd257
commit df6c650
Showing 1 changed file with 2 additions and 2 deletions.
diff --git 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)