On Thu, 29 Nov 2007 12:23:29 +0900
KAMEZAWA Hiroyuki <[email protected]> wrote:
> I noticed CONFIG_NUMA + CONFIG_CGROUP_MEM_CONT + CONFIG_SLUB cannot boot because of my patch.
> (SLAB is ok.)
> I'll post workaround soon.
>
==
This is a fix. tested on my ia64/NUMA box both on SLAB/SLUB.
This patch fixes kmalloc_node() is called against node-without-memory.
It's better to add memory hotplug callback for supporing possible nodes
(memory hotplug) but here just uses kmalloc().
Should be revisited later.
Signed-off-by: KAMEZAWA Hiroyuki <[email protected]>
mm/memcontrol.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
Index: linux-2.6.24-rc3-mm2/mm/memcontrol.c
===================================================================
--- linux-2.6.24-rc3-mm2.orig/mm/memcontrol.c
+++ linux-2.6.24-rc3-mm2/mm/memcontrol.c
@@ -1117,8 +1117,18 @@ static int alloc_mem_cgroup_per_zone_inf
struct mem_cgroup_per_node *pn;
struct mem_cgroup_per_zone *mz;
int zone;
-
- pn = kmalloc_node(sizeof(*pn), GFP_KERNEL, node);
+ /*
+ * This routine is called against possible nodes.
+ * But it's BUG to call kmalloc() against offline node.
+ *
+ * TODO: this routine can waste much memory for nodes which will
+ * never be onlined. It's better to use memory hotplug callback
+ * function.
+ */
+ if (node_state(node, N_HIGH_MEMORY))
+ pn = kmalloc_node(sizeof(*pn), GFP_KERNEL, node);
+ else
+ pn = kmalloc(sizeof(*pn), GFP_KERNEL);
if (!pn)
return 1;
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
