[Xen-devel] [patch] xen-scsifront: use GFP_ATOMIC under spin_lock

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

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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