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20:In8WQ2fcxOAjw4l02mi0HcHo3RBZx2D2iSHShxRhfBAQF6IRWZxZCdJ5ARcI1yfiVgRN0dGVdH75/7QG0KiTBeAgrIuHJPiqUxad2xvyak40D8BLdLAuurlUql1elzLaN3ibpWhxWeFtV8aJpqe258/WOjmMHl2Tdf99iE5MXEY= X-OriginatorOrg: sandisk.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 May 2017 23:49:05.1962 (UTC) X-MS-Exchange-CrossTenant-Id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=b61c8803-16f3-4c35-9b17-6f65f441df86; Ip=[63.163.107.225]; Helo=[milsmgep14.sandisk.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR04MB0354 Cc: Juergen Gross , Hannes Reinecke , xen-devel@lists.xenproject.org, target-devel@vger.kernel.org, David Disseldorp , Bart Van Assche , Christoph Hellwig Subject: [Xen-devel] [PATCH 17/33] xen/scsiback: Make TMF processing slightly faster X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP 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 Cc: Juergen Gross Cc: Christoph Hellwig Cc: Hannes Reinecke Cc: David Disseldorp Cc: xen-devel@lists.xenproject.org Acked-by: Juergen Gross --- drivers/xen/xen-scsiback.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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: