lkml.org 
[lkml]   [2017]   [Feb]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC] mm/zsmalloc: remove redundant SetPagePrivate2 in create_page_chain
On (02/14/17 20:48), Yisheng Xie wrote:
> We had used page->lru to link the component pages (except the first
> page) of a zspage, and used INIT_LIST_HEAD(&page->lru) to init it.
> Therefore, to get the last page's next page, which is NULL, we had to
> use page flag PG_Private_2 to identify it.
>
> But now, we use page->freelist to link all of the pages in zspage and
> init the page->freelist as NULL for last page, so no need to use
> PG_Private_2 anymore.
>
> This patch is to remove redundant SetPagePrivate2 in create_page_chain
> and ClearPagePrivate2 in reset_page(). Maybe can save few cycles for
> migration of zsmalloc page :)
>
> Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>

looks good to me.

Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>

-ss

\
 
 \ /
  Last update: 2017-02-14 19:08    [W:0.052 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site