linux-kernel - [PATCH] mm/page_alloc: Modify the comment section for alloc_contig

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Message-Id: <1639545478-12160-1-git-send-email-anshuman.khandual@arm.com>
Date:   Wed, 15 Dec 2021 10:47:58 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     linux-mm@...ck.org
Cc:     Anshuman Khandual <anshuman.khandual@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] mm/page_alloc: Modify the comment section for alloc_contig_pages()

Just clarify, that the alloc_contig_pages() allocated range will always be
aligned to the requested nr_pages.

Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-mm@...ck.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
---
 mm/page_alloc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index c5952749ad40..0d74ea524dd4 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -9214,8 +9214,8 @@ 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.
-- 
2.20.1