From: Dan Carpenter <dan.carpenter@oracle.com>
To: Juergen Gross <jgross@suse.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
David Vrabel <david.vrabel@citrix.com>,
"James E.J. Bottomley" <JBottomley@parallels.com>,
xen-devel@lists.xenproject.org, linux-scsi@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: [patch] xen-scsifront: use GFP_ATOMIC under spin_lock
Date: Mon, 8 Sep 2014 14:15:42 +0300 [thread overview]
Message-ID: <20140908111542.GA6947@mwanda> (raw)
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>
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;
}
next reply other threads:[~2014-09-08 11:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-08 11:15 Dan Carpenter [this message]
2014-09-08 11:30 ` [Xen-devel] [patch] xen-scsifront: use GFP_ATOMIC under spin_lock Juergen Gross
2014-09-08 17:34 ` David Vrabel
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