Re: [patch,v2 04/10] scsi: allocate scsi_cmnd-s from the device'slocal numa node
From: Bart Van Assche
Date: Sat Nov 03 2012 - 12:36:31 EST
On 11/02/12 22:45, Jeff Moyer wrote:
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 2936b44..4db6973 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -173,16 +173,20 @@ static DEFINE_MUTEX(host_cmd_pool_mutex);
* NULL on failure
*/
static struct scsi_cmnd *
-scsi_pool_alloc_command(struct scsi_host_cmd_pool *pool, gfp_t gfp_mask)
+scsi_pool_alloc_command(struct scsi_host_cmd_pool *pool, gfp_t gfp_mask,
+ int node)
{
struct scsi_cmnd *cmd;
- cmd = kmem_cache_zalloc(pool->cmd_slab, gfp_mask | pool->gfp_mask);
+ cmd = kmem_cache_alloc_node(pool->cmd_slab,
+ gfp_mask | pool->gfp_mask | __GFP_ZERO,
+ node);
if (!cmd)
return NULL;
- cmd->sense_buffer = kmem_cache_alloc(pool->sense_slab,
- gfp_mask | pool->gfp_mask);
+ cmd->sense_buffer = kmem_cache_alloc_node(pool->sense_slab,
+ gfp_mask | pool->gfp_mask | __GFP_ZERO,
+ node);
It's not clear to me why __GFP_ZERO is added to the allocation flags ?
Bart.
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