Commit 48128397 authored Jan 31, 2018 by Jiankang Chen Committed by Linus Torvalds Jan 31, 2018

mm/page_alloc.c: fix comment in __get_free_pages()

__get_free_pages() will return a virtual address, but it is not just a
32-bit address, for example on a 64-bit system.  And this comment really
confuses new readers of mm.

Link: http://lkml.kernel.org/r/1511780964-64864-1-git-send-email-chenjiankang1@huawei.com


Signed-off-by: Jiankang Chen <chenjiankang1@huawei.com>
Reported-by: Hanjun Guo <guohanjun@huawei.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Yisheng Xie <xieyisheng1@huawei.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 8e33771c

mm/page_alloc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -4278,7 +4278,7 @@ unsigned long __get_free_pages(gfp_t gfp_mask, unsigned int order)
		struct page *page;

		/*
		* __get_free_pages() returns a 32-bit address, which cannot represent
		* __get_free_pages() returns a virtual address, which cannot represent
		* a highmem page
		*/
		VM_BUG_ON((gfp_mask & __GFP_HIGHMEM) != 0);

Admin message