lkml.org 
[lkml]   [2022]   [Jun]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 14/16] mm/huge_memory: fix comment of page_deferred_list
Date
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.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
include/linux/huge_mm.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 12b297f9951d..2e8062b3417a 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -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.
+ * Global or memcg deferred list in the first tail page is
+ * occupied by compound_mapcount and compound_pincount.
*/
return &page[2].deferred_list;
}
--
2.23.0
\
 
 \ /
  Last update: 2022-06-22 19:07    [W:0.330 / U:0.976 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site