lkml.org 
[lkml]   [2018]   [Mar]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] sched/numa: Avoid trapping faults and attempting migration of file-backed dirty pages
From
Date
On Mon, 2018-03-26 at 10:43 +0100, Mel Gorman wrote:
> change_pte_range is called from task work context to mark PTEs for
> receiving
> NUMA faulting hints. If the marked pages are dirty then migration may
> fail.
> Some filesystems cannot migrate dirty pages without blocking so are
> skipped
> in MIGRATE_ASYNC mode which just wastes CPU. Even when they can, it
> can
> be a waste of cycles when the pages are shared forcing higher scan
> rates.

> Signed-off-by: Mel Gorman <mgorman@techsingularity.net>

Reviewed-by: Rik van Riel <riel@surriel.com>

--
All Rights Reversed.[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2018-03-26 23:59    [W:0.029 / U:4.528 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site