From 95099d4622f8cb224d94e314c7a8e0df60b13f87 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 08:38:01 +0000
Subject: [PATCH] enable docker ppp
---
kernel/drivers/scsi/device_handler/scsi_dh_alua.c | 39 +++++++++++++--------------------------
1 files changed, 13 insertions(+), 26 deletions(-)
diff --git a/kernel/drivers/scsi/device_handler/scsi_dh_alua.c b/kernel/drivers/scsi/device_handler/scsi_dh_alua.c
index 4cf7c33..fe8a5e5 100644
--- a/kernel/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/kernel/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -1,23 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Generic SCSI-3 ALUA SCSI Device Handler
*
* Copyright (C) 2007-2010 Hannes Reinecke, SUSE Linux Products GmbH.
* All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
*/
#include <linux/slab.h>
#include <linux/delay.h>
@@ -1090,28 +1076,29 @@
* Fail I/O to all paths not in state
* active/optimized or active/non-optimized.
*/
-static int alua_prep_fn(struct scsi_device *sdev, struct request *req)
+static blk_status_t alua_prep_fn(struct scsi_device *sdev, struct request *req)
{
struct alua_dh_data *h = sdev->handler_data;
struct alua_port_group *pg;
unsigned char state = SCSI_ACCESS_STATE_OPTIMAL;
- int ret = BLKPREP_OK;
rcu_read_lock();
pg = rcu_dereference(h->pg);
if (pg)
state = pg->state;
rcu_read_unlock();
- if (state == SCSI_ACCESS_STATE_TRANSITIONING)
- ret = BLKPREP_DEFER;
- else if (state != SCSI_ACCESS_STATE_OPTIMAL &&
- state != SCSI_ACCESS_STATE_ACTIVE &&
- state != SCSI_ACCESS_STATE_LBA) {
- ret = BLKPREP_KILL;
- req->rq_flags |= RQF_QUIET;
- }
- return ret;
+ switch (state) {
+ case SCSI_ACCESS_STATE_OPTIMAL:
+ case SCSI_ACCESS_STATE_ACTIVE:
+ case SCSI_ACCESS_STATE_LBA:
+ return BLK_STS_OK;
+ case SCSI_ACCESS_STATE_TRANSITIONING:
+ return BLK_STS_RESOURCE;
+ default:
+ req->rq_flags |= RQF_QUIET;
+ return BLK_STS_IOERR;
+ }
}
static void alua_rescan(struct scsi_device *sdev)
--
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