[patch] xen-scsifront: use GFP_ATOMIC under spin_lock

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This function is only called with a spin_lock held and IRQs disabled.
The allocation is not allowed to sleep and NOIO is not sufficient, it
has to be ATOMIC.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/scsi/xen-scsifront.c b/drivers/scsi/xen-scsifront.c
index 0aceb70..7e88659 100644
--- a/drivers/scsi/xen-scsifront.c
+++ b/drivers/scsi/xen-scsifront.c
@@ -359,7 +359,7 @@ static int map_data_for_request(struct vscsifrnt_info *info,
 		}
 		seg_grants = vscsiif_grants_sg(data_grants);
 		shadow->sg = kcalloc(data_grants,
-			sizeof(struct scsiif_request_segment), GFP_NOIO);
+			sizeof(struct scsiif_request_segment), GFP_ATOMIC);
 		if (!shadow->sg)
 			return -ENOMEM;
 	}
--
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