Commit eaab8e75 authored by Anshuman Khandual's avatar Anshuman Khandual Committed by Linus Torvalds
Browse files

mm/page_alloc.c: modify the comment section for alloc_contig_pages() 

Clarify that the alloc_contig_pages() allocated range will always be
aligned to the requested nr_pages.

Link: https://lkml.kernel.org/r/1639545478-12160-1-git-send-email-anshuman.khandual@arm.com


Signed-off-by: default avatarAnshuman Khandual <anshuman.khandual@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 04a536bf

mm/page_alloc.c

+2 −2
Original line number Diff line number Diff line
@@ -9272,8 +9272,8 @@ static bool zone_spans_last_pfn(const struct zone *zone, 
 * for allocation requests which can not be fulfilled with the buddy allocator.

 *

 * The allocated memory is always aligned to a page boundary. If nr_pages is a

 * power of two then the alignment is guaranteed to be to the given nr_pages

 * (e.g. 1GB request would be aligned to 1GB).

 * power of two, then allocated range is also guaranteed to be aligned to same

 * nr_pages (e.g. 1GB request would be aligned to 1GB).

 *

 * Allocated pages can be freed with free_contig_range() or by manually calling

 * __free_page() on each allocated page.