lkml.org 
[lkml]   [2015]   [Feb]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC 13/16] mm/cma: populate ZONE_CMA and use this zone when GFP_HIGHUSERMOVABLE


2015-02-12 오후 4:32에 Joonsoo Kim 이(가) 쓴 글:
> Until now, reserved pages for CMA are managed altogether with normal
> page in the same zone. This approach has numorous problems and fixing
> them isn't easy. To fix this situation, ZONE_CMA is introduced in
> previous patch, but, not yet populated. This patch implement population
> of ZONE_CMA by stealing reserved pages from normal zones. This stealing
> break one uncertain assumption on zone, that is, zone isn't overlapped.
> In the early of this series, some check is inserted to every zone's span
> iterator to handle zone overlap so there would be no problem with
> this assumption break.
>
> To utilize this zone, user should use GFP_HIGHUSERMOVABLE, because

I think it might be typo of GFP_HIGHUSER_MOVABLE.

> these pages are only applicable for movable type and ZONE_CMA could
> contain highmem.
>


\
 
 \ /
  Last update: 2015-02-14 06:21    [W:0.148 / U:4.304 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site