Currently we have to use vmalloc for the zone wait table possibly generating
the need to create lots of TLBs to access the tables. We can now use
GFP_VFALLBACK to attempt the use of a physically contiguous page that can then
use the large kernel TLBs.
Signed-off-by: Christoph Lameter <[EMAIL PROTECTED]>
---
mm/page_alloc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
Index: linux-2.6/mm/page_alloc.c
===================================================================
--- linux-2.6.orig/mm/page_alloc.c 2007-09-18 14:29:05.000000000 -0700
+++ linux-2.6/mm/page_alloc.c 2007-09-18 14:29:10.000000000 -0700
@@ -2572,7 +2572,9 @@ int zone_wait_table_init(struct zone *zo
* To use this new node's memory, further consideration will be
* necessary.
*/
- zone->wait_table = (wait_queue_head_t *)vmalloc(alloc_size);
+ zone->wait_table = (wait_queue_head_t *)
+ __get_free_pages(GFP_VFALLBACK,
+ get_order(alloc_size));
}
if (!zone->wait_table)
return -ENOMEM;
--
-
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