iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mm/huge_memory: fix comment of page_deferred_list

Browse Source 
The current comment is confusing because if global or memcg deferred list
in the second tail page is occupied by compound_head, why we still use
page[2].deferred_list here? I think it wants to say that Global or memcg
deferred list in the first tail page is occupied by compound_mapcount and
compound_pincount so we use the second tail page's deferred_list instead.

Link: https://lkml.kernel.org/r/20220704132201.14611-14-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Zach O'Keefe <zokeefe@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2022-07-04 21:21:58 +08:00 committed by akpm
parent a17206dac7
commit 121c1781ae
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/linux/huge_mm.h
View File

@ -294,8 +294,8 @@ static inline bool thp_migration_supported(void)
static inline struct list_head *page_deferred_list(struct page *page)
{
/*
* Global or memcg deferred list in the second tail pages is
* occupied by compound_head.
* See organization of tail pages of compound page in
* "struct page" definition.
*/
return &page[2].deferred_list;
}