[RFC Patch V1 19/30] mm, bnx2i: Use cpu_to_mem()/numa_mem_id() to support memoryless node

From: Jiang Liu
Date: Fri Jul 11 2014 - 03:42:00 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/bnx2i/bnx2i_init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/bnx2i/bnx2i_init.c b/drivers/scsi/bnx2i/bnx2i_init.c
index 80c03b452d61..f67a5a63134e 100644
--- a/drivers/scsi/bnx2i/bnx2i_init.c
+++ b/drivers/scsi/bnx2i/bnx2i_init.c
@@ -423,7 +423,7 @@ static void bnx2i_percpu_thread_create(unsigned int cpu)
p = &per_cpu(bnx2i_percpu, cpu);

thread = kthread_create_on_node(bnx2i_percpu_io_thread, (void *)p,
- cpu_to_node(cpu),
+ cpu_to_mem(cpu),
"bnx2i_thread/%d", cpu);
/* bind thread to the cpu */
if (likely(!IS_ERR(thread))) {

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