From: Matthew Wilcox <matthew@wil.cx>
Date: Wed, 15 Dec 2010 20:44:06 +0000 (-0500)
Subject: USB: uas: Use GFP_NOIO instead of GFP_KERNEL in I/O submission path
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=0b83ae960cd7d4a5ee02786ecf41ab45688999bf;p=deliverable%2Flinux.git

USB: uas: Use GFP_NOIO instead of GFP_KERNEL in I/O submission path

If swap is on a UAS device, we could recurse into the driver by using
GFP_KERNEL.  Using GFP_NOIO ensures we won't.

Reported-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index 52e5ec1b2e8a..8d58c6316111 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -141,7 +141,7 @@ static void uas_do_work(struct work_struct *work)
 		struct scsi_pointer *scp = (void *)cmdinfo;
 		struct scsi_cmnd *cmnd = container_of(scp,
 							struct scsi_cmnd, SCp);
-		uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_KERNEL);
+		uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_NOIO);
 	}
 }