lkml.org 
[lkml]   [2014]   [May]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 09/19] mm: page_alloc: Use word-based accesses for get/set pageblock bitmaps
On Thu, 22 May 2014 11:24:23 +0200 Vlastimil Babka <vbabka@suse.cz> wrote:

> > In a test running dd onto tmpfs the overhead of the pageblock-related
> > functions went from 1.27% in profiles to 0.5%.
> >
> > Signed-off-by: Mel Gorman <mgorman@suse.de>
> > Acked-by: Vlastimil Babka <vbabka@suse.cz>
>
> Hi, I've tested if this closes the race I've been previously trying to fix
> with the series in http://marc.info/?l=linux-mm&m=139359694028925&w=2
> And indeed with this patch I wasn't able to reproduce it in my stress test
> (which adds lots of memory isolation calls) anymore. So thanks to Mel I can
> dump my series in the trashcan :P
>
> Therefore I believe something like below should be added to the changelog,
> and put to stable as well.

OK, I made it so.

Miraculously, the patch applies OK to 3.14. And it compiles!


\
 
 \ /
  Last update: 2014-05-22 21:01    [W:1.359 / U:0.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site