Initial commit

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>

modules/cas_disk/exp_obj.h

@@ -0,0 +1,59 @@
+/*
+* Copyright(c) 2012-2019 Intel Corporation
+* SPDX-License-Identifier: BSD-3-Clause-Clear
+*/
+#ifndef __CASDISK_EXP_OBJ_H__
+#define __CASDISK_EXP_OBJ_H__
+
+#include <linux/kobject.h>
+#include <linux/fs.h>
+
+struct casdsk_disk;
+
+struct casdsk_exp_obj_pt_io_ctx {
+	struct casdsk_disk *dsk;
+	struct bio *bio;
+};
+
+struct casdsk_exp_obj {
+
+	struct gendisk *gd;
+	struct request_queue *queue;
+	spinlock_t rq_lock;
+
+	struct block_device *locked_bd;
+
+	struct module *owner;
+
+	bool activated;
+
+	struct casdsk_exp_obj_ops *ops;
+
+	make_request_fn *mk_rq_fn;
+
+	const char *dev_name;
+	struct kobject kobj;
+
+	atomic_t pt_ios;
+	atomic_t *pending_rqs;
+};
+
+int __init casdsk_init_exp_objs(void);
+void casdsk_deinit_exp_objs(void);
+
+void casdsk_exp_obj_free(struct casdsk_disk *dsk);
+
+int casdsk_exp_obj_dettach(struct casdsk_disk *dsk);
+int casdsk_exp_obj_attach(struct casdsk_disk *dsk, struct module *owner,
+			struct casdsk_exp_obj_ops *ops);
+void casdsk_exp_obj_prepare_pt(struct casdsk_disk *dsk);
+void casdsk_exp_obj_prepare_attached(struct casdsk_disk *dsk);
+
+void casdsk_exp_obj_prepare_shutdown(struct casdsk_disk *dsk);
+
+static inline struct casdsk_exp_obj *casdsk_kobj_to_exp_obj(struct kobject *kobj)
+{
+	return container_of(kobj, struct casdsk_exp_obj, kobj);
+}
+
+#endif