From: Vaughan Cao <vaughan.cao@oracle.com>
Date: Thu, 29 Aug 2013 02:00:39 +0000 (+0800)
Subject: [SCSI] sg: push file descriptor list locking down to per-device locking
X-Git-Tag: v3.12-rc1~180^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1f962ebcdfa15cede59e9edb299d1330949eec92;p=pandora-kernel.git

[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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