lkml.org 
[lkml]   [2007]   [Feb]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5/5] lumpy: only check for valid pages when holes are present
Date

We only need to check that each page is valid with pfn_valid when
we are on an architecture which had holes within zones. Make this
check conditional.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
---
diff --git a/mm/vmscan.c b/mm/vmscan.c
index bef7e92..f249ad7 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -725,9 +725,11 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan,
/* The target page is in the block, ignore it. */
if (unlikely(pfn == page_pfn))
continue;
+#ifdef CONFIG_HOLES_IN_ZONE
/* Avoid holes within the zone. */
if (unlikely(!pfn_valid(pfn)))
break;
+#endif

cursor_page = pfn_to_page(pfn);
/* Check that we have not crossed a zone boundary. */
-
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: 2007-02-27 20:39    [W:0.148 / U:0.448 seconds]
©2003-2014 Jasper Spaans. Advertise on this site