Commit df6c6500 authored by Wei Yang's avatar Wei Yang Committed by Linus Torvalds
Browse files

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

Improve readability, no functional change.

Link: http://lkml.kernel.org/r/20191118032857.22683-1-richardw.yang@linux.intel.com


Signed-off-by: default avatarWei Yang <richardw.yang@linux.intel.com>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent d3cd257c

mm/madvise.c

+2 −2
Original line number Diff line number Diff line
@@ -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)