lkml.org 
[lkml]   [2009]   [Jun]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 2/3] check unevictable flag in lumy reclaim
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>

Lumpy reclaim scans pages from their pfn. Then, it can find unevictable pages
in its loop. Abort lumpy reclaim when we find Unevictable page, we never get a
block of pages for requested order.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
---
Index: lumpy-reclaim-trial/mm/vmscan.c
===================================================================
--- lumpy-reclaim-trial.orig/mm/vmscan.c
+++ lumpy-reclaim-trial/mm/vmscan.c
@@ -936,6 +936,9 @@ static unsigned long isolate_lru_pages(u
/* Check that we have not crossed a zone boundary. */
if (unlikely(page_zone_id(cursor_page) != zone_id))
continue;
+ /* Abort when the page is mlocked */
+ if (unlikely(PageUnevictable(cursor_page)))
+ break;
if (__isolate_lru_page(cursor_page, mode, file) == 0) {
list_move(&cursor_page->lru, dst);
nr_taken++;


\
 
 \ /
  Last update: 2009-06-11 10:07    [from the cache]
©2003-2011 Jasper Spaans