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| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2017-05-24 01:48:38 +0200 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2017-07-07 07:58:03 +0200 |
| commit | af90e84d1f535827f4c593436a807b1efa9f6f2b (patch) | |
| tree | 5bc3d6a0369e780bad7b6fe3d882b1b9148ef610 /drivers/xen | |
| parent | xen/scsiback: Replace a waitqueue and a counter by a completion (diff) | |
| download | linux-af90e84d1f535827f4c593436a807b1efa9f6f2b.tar.xz linux-af90e84d1f535827f4c593436a807b1efa9f6f2b.zip | |
xen/scsiback: Make TMF processing slightly faster
Target drivers must guarantee that struct se_cmd and struct se_tmr_req
exist as long as target_tmr_work() is in progress. Since the last
access by the LIO core is a call to .check_stop_free() and since the
Xen scsiback .check_stop_free() drops a reference to the TMF, it is
already guaranteed that the struct se_cmd that corresponds to the TMF
exists as long as target_tmr_work() is in progress. Hence change the
second argument of transport_generic_free_cmd() from 1 into 0.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Cc: David Disseldorp <ddiss@suse.de>
Cc: xen-devel@lists.xenproject.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/xen-scsiback.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c index 4cb33a0916a8..7bc88fd43cfc 100644 --- a/drivers/xen/xen-scsiback.c +++ b/drivers/xen/xen-scsiback.c @@ -614,7 +614,7 @@ static void scsiback_device_action(struct vscsibk_pend *pending_req, SUCCESS : FAILED; scsiback_do_resp_with_sense(NULL, err, 0, pending_req); - transport_generic_free_cmd(&pending_req->se_cmd, 1); + transport_generic_free_cmd(&pending_req->se_cmd, 0); return; err: |