tree 0b2018c25b6774bd8cd3d97c1201670c1470de52
parent e32c9e6300e3af659cbfe45e90a1e7dcd3572ada
author Vaughan Cao <vaughan.cao@oracle.com> 1377741639 +0800
committer James Bottomley <JBottomley@Parallels.com> 1378218490 -0700

[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>