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authorChristoph Lameter <clameter@sgi.com>2008-01-14 00:55:14 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-01-14 08:52:22 -0800
commit96990a4ae979df9e235d01097d6175759331e88c (patch)
treeba545616c7deb1cca99565655a80564564d39bd4
parent8f4c79ce79d1552014af3c115d03e13092443905 (diff)
downloadlinux-linaro-stable-96990a4ae979df9e235d01097d6175759331e88c.tar.gz
quicklists: Only consider memory that can be used with GFP_KERNEL
Quicklists calculates the size of the quicklists based on the number of free pages. This must be the number of free pages that can be allocated with GFP_KERNEL. node_page_state() includes the pages in ZONE_HIGHMEM and ZONE_MOVABLE which may lead the quicklists to become too large causing OOM. Signed-off-by: Christoph Lameter <clameter@sgi.com> Tested-by: Dhaval Giani <dhaval@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/quicklist.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/mm/quicklist.c b/mm/quicklist.c
index ae8189c2799e..3f703f7cb398 100644
--- a/mm/quicklist.c
+++ b/mm/quicklist.c
@@ -26,9 +26,17 @@ DEFINE_PER_CPU(struct quicklist, quicklist)[CONFIG_NR_QUICK];
static unsigned long max_pages(unsigned long min_pages)
{
unsigned long node_free_pages, max;
+ struct zone *zones = NODE_DATA(numa_node_id())->node_zones;
+
+ node_free_pages =
+#ifdef CONFIG_ZONE_DMA
+ zone_page_state(&zones[ZONE_DMA], NR_FREE_PAGES) +
+#endif
+#ifdef CONFIG_ZONE_DMA32
+ zone_page_state(&zones[ZONE_DMA32], NR_FREE_PAGES) +
+#endif
+ zone_page_state(&zones[ZONE_NORMAL], NR_FREE_PAGES);
- node_free_pages = node_page_state(numa_node_id(),
- NR_FREE_PAGES);
max = node_free_pages / FRACTION_OF_NODE_MEM;
return max(max, min_pages);
}