lkml.org 
[lkml]   [2002]   [Jul]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[patch 2/13] leave truncate's orphaned pages on the LRU


Fix to the page reclaim code from Rik.

Anonymous pages which have buffers arise when
truncate_complete_page()'s call to ->releasepage() failed. Those pages
may still be mapped into process address spaces.

We should not remove them from the LRU, because that makes them
unswappable and they hang around until process exit.



vmscan.c | 12 ++----------
1 files changed, 2 insertions(+), 10 deletions(-)

--- 2.5.26/mm/vmscan.c~rmap-lru-fix Tue Jul 16 21:46:28 2002
+++ 2.5.26-akpm/mm/vmscan.c Tue Jul 16 21:59:41 2002
@@ -235,19 +235,11 @@ shrink_cache(int nr_pages, zone_t *class

if (try_to_release_page(page, gfp_mask)) {
if (!mapping) {
- /*
- * We must not allow an anon page
- * with no buffers to be visible on
- * the LRU, so we unlock the page after
- * taking the lru lock
- */
- spin_lock(&pagemap_lru_lock);
- unlock_page(page);
- __lru_cache_del(page);
-
/* effectively free the page here */
+ unlock_page(page);
page_cache_release(page);

+ spin_lock(&pagemap_lru_lock);
if (--nr_pages)
continue;
break;
.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:22    [W:0.032 / U:6.188 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site