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authorChristoph Lameter <clameter@sgi.com>2008-01-14 03:55:14 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-01-14 11:52:22 -0500
commit96990a4ae979df9e235d01097d6175759331e88c (patch)
treeba545616c7deb1cca99565655a80564564d39bd4 /mm/quicklist.c
parent8f4c79ce79d1552014af3c115d03e13092443905 (diff)
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>
Diffstat (limited to 'mm/quicklist.c')
-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];
26static unsigned long max_pages(unsigned long min_pages) 26static unsigned long max_pages(unsigned long min_pages)
27{ 27{
28 unsigned long node_free_pages, max; 28 unsigned long node_free_pages, max;
29 struct zone *zones = NODE_DATA(numa_node_id())->node_zones;
30
31 node_free_pages =
32#ifdef CONFIG_ZONE_DMA
33 zone_page_state(&zones[ZONE_DMA], NR_FREE_PAGES) +
34#endif
35#ifdef CONFIG_ZONE_DMA32
36 zone_page_state(&zones[ZONE_DMA32], NR_FREE_PAGES) +
37#endif
38 zone_page_state(&zones[ZONE_NORMAL], NR_FREE_PAGES);
29 39
30 node_free_pages = node_page_state(numa_node_id(),
31 NR_FREE_PAGES);
32 max = node_free_pages / FRACTION_OF_NODE_MEM; 40 max = node_free_pages / FRACTION_OF_NODE_MEM;
33 return max(max, min_pages); 41 return max(max, min_pages);
34} 42}