From 1f962ebcdfa15cede59e9edb299d1330949eec92 Mon Sep 17 00:00:00 2001
From: Vaughan Cao <vaughan.cao@oracle.com>
Date: Thu, 29 Aug 2013 10:00:39 +0800
Subject: [PATCH] [SCSI] sg: push file descriptor list locking down to
 per-device locking

Push file descriptor list locking down to per-device locking. Let sg_index_lock
only protect device lookup.
sdp->detached is also set and checked with this lock held.

Signed-off-by: Vaughan Cao <vaughan.cao@oracle.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Reading git-format-patch failed