92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/*
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* Copyright(c) 2012-2021 Intel Corporation
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* SPDX-License-Identifier: BSD-3-Clause-Clear
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*/
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#ifndef __CASDISK_DEFS_H__
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#define __CASDISK_DEFS_H__
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#include <linux/version.h>
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#include <linux/fs.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/kobject.h>
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#include <linux/blkdev.h>
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struct casdsk_stored_config {
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size_t n_blobs;
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struct casdsk_props_conf *blobs;
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};
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struct casdsk_module {
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struct mutex lock;
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struct list_head disk_list;
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uint32_t next_disk_id;
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int disk_major;
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int next_minor;
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struct kmem_cache *disk_cache;
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struct kmem_cache *exp_obj_cache;
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struct kmem_cache *pt_io_ctx_cache;
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struct kmem_cache *pending_rqs_cache;
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struct kobject kobj;
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struct casdsk_stored_config config;
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};
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extern struct casdsk_module *casdsk_module;
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/* prefixes for messages */
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#define CASDSK_LOGO "CAS Disk"
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#define CASDSK_PREFIX_SHORT "[" CASDSK_LOGO "] "
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#define CASDSK_PREFIX_LONG "Cache Acceleration Software Linux"
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#define CASDSK_KERN_EMERG KERN_EMERG""CASDSK_PREFIX_SHORT
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#define CASDSK_KERN_ALERT KERN_ALERT""CASDSK_PREFIX_SHORT
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#define CASDSK_KERN_CRIT KERN_CRIT""CASDSK_PREFIX_SHORT
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#define CASDSK_KERN_ERR KERN_ERR""CASDSK_PREFIX_SHORT
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#define CASDSK_KERN_WARNING KERN_WARNING""CASDSK_PREFIX_SHORT
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#define CASDSK_KERN_NOTICE KERN_NOTICE""CASDSK_PREFIX_SHORT
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#define CASDSK_KERN_INFO KERN_INFO""CASDSK_PREFIX_SHORT
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#define CASDSK_KERN_DEBUG KERN_DEBUG""CASDSK_PREFIX_SHORT
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static inline struct block_device *open_bdev_exclusive(const char *path,
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fmode_t mode,
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void *holder)
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{
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return blkdev_get_by_path(path, mode | FMODE_EXCL, holder);
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}
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static inline void close_bdev_exclusive(struct block_device *bdev, fmode_t mode)
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{
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blkdev_put(bdev, mode | FMODE_EXCL);
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}
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static inline int bd_claim_by_disk(struct block_device *bdev, void *holder,
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struct gendisk *disk)
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{
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return bd_link_disk_holder(bdev, disk);
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}
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static inline void bd_release_from_disk(struct block_device *bdev,
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struct gendisk *disk)
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{
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return bd_unlink_disk_holder(bdev, disk);
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}
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 3, 0)
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#define KRETURN(x) ({ return (x); })
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#define MAKE_RQ_RET_TYPE blk_qc_t
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#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3, 2, 0)
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#define KRETURN(x) return
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#define MAKE_RQ_RET_TYPE void
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#else
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#define KRETURN(x) ({ return (x); })
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#define MAKE_RQ_RET_TYPE int
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#endif
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#include "debug.h"
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#endif
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