commit e32c9e6300e3af659cbfe45e90a1e7dcd3572ada
author Vaughan Cao <vaughan.cao@oracle.com> Thu Aug 29 10:00:38 2013 +0800
committer James Bottomley <JBottomley@Parallels.com> Tue Sep 03 07:28:09 2013 -0700
tree 2e924a5838335cbfca0cf52a0add8e38801773e2
parent 00b2d9d6d05b56fc1d77071ff8ccbd2c65b48dec

[SCSI] sg: checking sdp->detached isn't protected when open

@detached is set under the protection of sg_index_lock. Without getting the
lock, new sfp will be added during sg removal and there is no chance for it
to be picked out. So check with sg_index_lock held in sg_add_sfp().

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