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tcmur_device.h
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tcmur_device.h
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/*
* Copyright 2017, Red Hat, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
#ifndef __TCMUR_DEVICE_H
#define __TCMUR_DEVICE_H
#include "tcmur_aio.h"
#define TCMUR_DEV_FORMATTING 0x01
struct tcmur_device {
/* TCMUR_DEV flags */
uint32_t flags;
/*
* lock order:
* work_queue->aio_lock
* track_queue->track_lock
*/
struct tcmu_io_queue work_queue;
struct tcmu_track_aio track_queue;
pthread_spinlock_t lock; /* protects concurrent updates to mailbox */
pthread_mutex_t caw_lock; /* for atomic CAW operation */
uint32_t format_progress;
pthread_mutex_t format_lock; /* for atomic format operations */
};
#endif