From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Mon, 8 Sep 2014 11:15:42 +0000 (+0300)
Subject: xen-scsifront: use GFP_ATOMIC under spin_lock
X-Git-Tag: firefly_0821_release~176^2~3080^2~14
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d9b1e6374b3a9b88774e30d0c6bf6e394cd10b76;p=firefly-linux-kernel-4.4.55.git

xen-scsifront: use GFP_ATOMIC under spin_lock

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@oracle.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
---

diff --git a/drivers/scsi/xen-scsifront.c b/drivers/scsi/xen-scsifront.c
index 0aceb70e1d83..7e88659bf5af 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;
 	}