[RFC Patch V1 20/30] mm, fcoe: Use cpu_to_mem()/numa_mem_id() to support memoryless node

From: Jiang Liu
Date: Fri Jul 11 2014 - 03:43:22 EST


When CONFIG_HAVE_MEMORYLESS_NODES is enabled, cpu_to_node()/numa_node_id()
may return a node without memory, and later cause system failure/panic
when calling kmalloc_node() and friends with returned node id.
So use cpu_to_mem()/numa_mem_id() instead to get the nearest node with
memory for the/current cpu.

If CONFIG_HAVE_MEMORYLESS_NODES is disabled, cpu_to_mem()/numa_mem_id()
is the same as cpu_to_node()/numa_node_id().

Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
---
drivers/scsi/fcoe/fcoe.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 00ee0ed642aa..779a7af0e410 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -1257,7 +1257,7 @@ static void fcoe_percpu_thread_create(unsigned int cpu)
p = &per_cpu(fcoe_percpu, cpu);

thread = kthread_create_on_node(fcoe_percpu_receive_thread,
- (void *)p, cpu_to_node(cpu),
+ (void *)p, cpu_to_mem(cpu),
"fcoethread/%d", cpu);

if (likely(!IS_ERR(thread))) {
--
1.7.10.4

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