scsi: remove the SCSI OSD library

Now that all the users are gone the SCSI OSD library can be removed as
well.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

2 files changed, 0 insertions, 712 deletions

diff --git a/include/scsi/osd_initiator.h b/include/scsi/osd_initiator.h
deleted file mode 100644
index 86a569d008b2..000000000000
--- a/include/scsi/osd_initiator.h
+++ /dev/null
@@ -1,511 +0,0 @@
-/*
- * osd_initiator.h - OSD initiator API definition
- *
- * Copyright (C) 2008 Panasas Inc.  All rights reserved.
- *
- * Authors:
- *   Boaz Harrosh <ooo@electrozaur.com>
- *   Benny Halevy <bhalevy@panasas.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- *
- */
-#ifndef __OSD_INITIATOR_H__
-#define __OSD_INITIATOR_H__
-
-#include <scsi/osd_protocol.h>
-#include <scsi/osd_types.h>
-
-#include <linux/blkdev.h>
-#include <scsi/scsi_device.h>
-
-/* Note: "NI" in comments below means "Not Implemented yet" */
-
-/* Configure of code:
- * #undef if you *don't* want OSD v1 support in runtime.
- * If #defined the initiator will dynamically configure to encode OSD v1
- * CDB's if the target is detected to be OSD v1 only.
- * OSD v2 only commands, options, and attributes will be ignored if target
- * is v1 only.
- * If #defined will result in bigger/slower code (OK Slower maybe not)
- * Q: Should this be CONFIG_SCSI_OSD_VER1_SUPPORT and set from Kconfig?
- */
-#define OSD_VER1_SUPPORT y
-
-enum osd_std_version {
-	OSD_VER_NONE = 0,
-	OSD_VER1 = 1,
-	OSD_VER2 = 2,
-};
-
-/*
- * Object-based Storage Device.
- * This object represents an OSD device.
- * It is not a full linux device in any way. It is only
- * a place to hang resources associated with a Linux
- * request Q and some default properties.
- */
-struct osd_dev {
-	struct scsi_device *scsi_device;
-	unsigned def_timeout;
-
-#ifdef OSD_VER1_SUPPORT
-	enum osd_std_version version;
-#endif
-};
-
-/* Unique Identification of an OSD device */
-struct osd_dev_info {
-	unsigned systemid_len;
-	u8 systemid[OSD_SYSTEMID_LEN];
-	unsigned osdname_len;
-	u8 *osdname;
-};
-
-/* Retrieve/return osd_dev(s) for use by Kernel clients
- * Use IS_ERR/ERR_PTR on returned "osd_dev *".
- */
-struct osd_dev *osduld_path_lookup(const char *dev_name);
-struct osd_dev *osduld_info_lookup(const struct osd_dev_info *odi);
-void osduld_put_device(struct osd_dev *od);
-
-const struct osd_dev_info *osduld_device_info(struct osd_dev *od);
-bool osduld_device_same(struct osd_dev *od, const struct osd_dev_info *odi);
-
-/* Add/remove test ioctls from external modules */
-typedef int (do_test_fn)(struct osd_dev *od, unsigned cmd, unsigned long arg);
-int osduld_register_test(unsigned ioctl, do_test_fn *do_test);
-void osduld_unregister_test(unsigned ioctl);
-
-/* These are called by uld at probe time */
-void osd_dev_init(struct osd_dev *od, struct scsi_device *scsi_device);
-void osd_dev_fini(struct osd_dev *od);
-
-/**
- * osd_auto_detect_ver - Detect the OSD version, return Unique Identification
- *
- * @od:     OSD target lun handle
- * @caps:   Capabilities authorizing OSD root read attributes access
- * @odi:    Retrieved information uniquely identifying the osd target lun
- *          Note: odi->osdname must be kfreed by caller.
- *
- * Auto detects the OSD version of the OSD target and sets the @od
- * accordingly. Meanwhile also returns the "system id" and "osd name" root
- * attributes which uniquely identify the OSD target. This member is usually
- * called by the ULD. ULD users should call osduld_device_info().
- * This rutine allocates osd requests and memory at GFP_KERNEL level and might
- * sleep.
- */
-int osd_auto_detect_ver(struct osd_dev *od,
-	void *caps, struct osd_dev_info *odi);
-
-static inline struct request_queue *osd_request_queue(struct osd_dev *od)
-{
-	return od->scsi_device->request_queue;
-}
-
-/* we might want to use function vector in the future */
-static inline void osd_dev_set_ver(struct osd_dev *od, enum osd_std_version v)
-{
-#ifdef OSD_VER1_SUPPORT
-	od->version = v;
-#endif
-}
-
-static inline bool osd_dev_is_ver1(struct osd_dev *od)
-{
-#ifdef OSD_VER1_SUPPORT
-	return od->version == OSD_VER1;
-#else
-	return false;
-#endif
-}
-
-struct osd_request;
-typedef void (osd_req_done_fn)(struct osd_request *or, void *private);
-
-struct osd_request {
-	struct osd_cdb cdb;
-	struct osd_data_out_integrity_info out_data_integ;
-	struct osd_data_in_integrity_info in_data_integ;
-
-	struct osd_dev *osd_dev;
-	struct request *request;
-
-	struct _osd_req_data_segment {
-		void *buff;
-		unsigned alloc_size; /* 0 here means: don't call kfree */
-		unsigned total_bytes;
-	} cdb_cont, set_attr, enc_get_attr, get_attr;
-
-	struct _osd_io_info {
-		struct bio *bio;
-		u64 total_bytes;
-		u64 residual;
-		struct request *req;
-		struct _osd_req_data_segment *last_seg;
-		u8 *pad_buff;
-	} out, in;
-
-	unsigned timeout;
-	unsigned retries;
-	unsigned sense_len;
-	u8 sense[OSD_MAX_SENSE_LEN];
-	enum osd_attributes_mode attributes_mode;
-
-	osd_req_done_fn *async_done;
-	void *async_private;
-	blk_status_t async_error;
-	int req_errors;
-};
-
-static inline bool osd_req_is_ver1(struct osd_request *or)
-{
-	return osd_dev_is_ver1(or->osd_dev);
-}
-
-/*
- * How to use the osd library:
- *
- * osd_start_request
- *	Allocates a request.
- *
- * osd_req_*
- *	Call one of, to encode the desired operation.
- *
- * osd_add_{get,set}_attr
- *	Optionally add attributes to the CDB, list or page mode.
- *
- * osd_finalize_request
- *	Computes final data out/in offsets and signs the request,
- *	making it ready for execution.
- *
- * osd_execute_request
- *	May be called to execute it through the block layer. Other wise submit
- *	the associated block request in some other way.
- *
- * After execution:
- * osd_req_decode_sense
- *	Decodes sense information to verify execution results.
- *
- * osd_req_decode_get_attr
- *	Retrieve osd_add_get_attr_list() values if used.
- *
- * osd_end_request
- *	Must be called to deallocate the request.
- */
-
-/**
- * osd_start_request - Allocate and initialize an osd_request
- *
- * @osd_dev:    OSD device that holds the scsi-device and default values
- *              that the request is associated with.
- *
- * Allocate osd_request and initialize all members to the
- * default/initial state.
- */
-struct osd_request *osd_start_request(struct osd_dev *od);
-
-enum osd_req_options {
-	OSD_REQ_FUA = 0x08,	/* Force Unit Access */
-	OSD_REQ_DPO = 0x10,	/* Disable Page Out */
-
-	OSD_REQ_BYPASS_TIMESTAMPS = 0x80,
-};
-
-/**
- * osd_finalize_request - Sign request and prepare request for execution
- *
- * @or:		osd_request to prepare
- * @options:	combination of osd_req_options bit flags or 0.
- * @cap:	A Pointer to an OSD_CAP_LEN bytes buffer that is received from
- *              The security manager as capabilities for this cdb.
- * @cap_key:	The cryptographic key used to sign the cdb/data. Can be null
- *              if NOSEC is used.
- *
- * The actual request and bios are only allocated here, so are the get_attr
- * buffers that will receive the returned attributes. Copy's @cap to cdb.
- * Sign the cdb/data with @cap_key.
- */
-int osd_finalize_request(struct osd_request *or,
-	u8 options, const void *cap, const u8 *cap_key);
-
-/**
- * osd_execute_request - Execute the request synchronously through block-layer
- *
- * @or:		osd_request to Executed
- *
- * Calls blk_execute_rq to q the command and waits for completion.
- */
-int osd_execute_request(struct osd_request *or);
-
-/**
- * osd_execute_request_async - Execute the request without waitting.
- *
- * @or:                      - osd_request to Executed
- * @done: (Optional)         - Called at end of execution
- * @private:                 - Will be passed to @done function
- *
- * Calls blk_execute_rq_nowait to queue the command. When execution is done
- * optionally calls @done with @private as parameter. @or->async_error will
- * have the return code
- */
-int osd_execute_request_async(struct osd_request *or,
-	osd_req_done_fn *done, void *private);
-
-/**
- * osd_req_decode_sense_full - Decode sense information after execution.
- *
- * @or:           - osd_request to examine
- * @osi           - Receives a more detailed error report information (optional).
- * @silent        - Do not print to dmsg (Even if enabled)
- * @bad_obj_list  - Some commands act on multiple objects. Failed objects will
- *                  be received here (optional)
- * @max_obj       - Size of @bad_obj_list.
- * @bad_attr_list - List of failing attributes (optional)
- * @max_attr      - Size of @bad_attr_list.
- *
- * After execution, osd_request results are analyzed using this function. The
- * return code is the final disposition on the error. So it is possible that a
- * CHECK_CONDITION was returned from target but this will return NO_ERROR, for
- * example on recovered errors. All parameters are optional if caller does
- * not need any returned information.
- * Note: This function will also dump the error to dmsg according to settings
- * of the SCSI_OSD_DPRINT_SENSE Kconfig value. Set @silent if you know the
- * command would routinely fail, to not spam the dmsg file.
- */
-
-/**
- * osd_err_priority - osd categorized return codes in ascending severity.
- *
- * The categories are borrowed from the pnfs_osd_errno enum.
- * See comments for translated Linux codes returned by osd_req_decode_sense.
- */
-enum osd_err_priority {
-	OSD_ERR_PRI_NO_ERROR	= 0,
-	/* Recoverable, caller should clear_highpage() all pages */
-	OSD_ERR_PRI_CLEAR_PAGES = 1, /* -EFAULT */
-	OSD_ERR_PRI_RESOURCE	= 2, /* -ENOMEM */
-	OSD_ERR_PRI_BAD_CRED	= 3, /* -EINVAL */
-	OSD_ERR_PRI_NO_ACCESS	= 4, /* -EACCES */
-	OSD_ERR_PRI_UNREACHABLE	= 5, /* any other */
-	OSD_ERR_PRI_NOT_FOUND	= 6, /* -ENOENT */
-	OSD_ERR_PRI_NO_SPACE	= 7, /* -ENOSPC */
-	OSD_ERR_PRI_EIO		= 8, /* -EIO    */
-};
-
-struct osd_sense_info {
-	enum osd_err_priority osd_err_pri;
-
-	int key;		/* one of enum scsi_sense_keys */
-	int additional_code ;	/* enum osd_additional_sense_codes */
-	union { /* Sense specific information */
-		u16 sense_info;
-		u16 cdb_field_offset; 	/* scsi_invalid_field_in_cdb */
-	};
-	union { /* Command specific information */
-		u64 command_info;
-	};
-
-	u32 not_initiated_command_functions; /* osd_command_functions_bits */
-	u32 completed_command_functions; /* osd_command_functions_bits */
-	struct osd_obj_id obj;
-	struct osd_attr attr;
-};
-
-int osd_req_decode_sense_full(struct osd_request *or,
-	struct osd_sense_info *osi, bool silent,
-	struct osd_obj_id *bad_obj_list, int max_obj,
-	struct osd_attr *bad_attr_list, int max_attr);
-
-static inline int osd_req_decode_sense(struct osd_request *or,
-	struct osd_sense_info *osi)
-{
-	return osd_req_decode_sense_full(or, osi, false, NULL, 0, NULL, 0);
-}
-
-/**
- * osd_end_request - return osd_request to free store
- *
- * @or:		osd_request to free
- *
- * Deallocate all osd_request resources (struct req's, BIOs, buffers, etc.)
- */
-void osd_end_request(struct osd_request *or);
-
-/*
- * CDB Encoding
- *
- * Note: call only one of the following methods.
- */
-
-/*
- * Device commands
- */
-void osd_req_set_master_seed_xchg(struct osd_request *or, ...);/* NI */
-void osd_req_set_master_key(struct osd_request *or, ...);/* NI */
-
-void osd_req_format(struct osd_request *or, u64 tot_capacity);
-
-/* list all partitions
- * @list header must be initialized to zero on first run.
- *
- * Call osd_is_obj_list_done() to find if we got the complete list.
- */
-int osd_req_list_dev_partitions(struct osd_request *or,
-	osd_id initial_id, struct osd_obj_id_list *list, unsigned nelem);
-
-void osd_req_flush_obsd(struct osd_request *or,
-	enum osd_options_flush_scope_values);
-
-void osd_req_perform_scsi_command(struct osd_request *or,
-	const u8 *cdb, ...);/* NI */
-void osd_req_task_management(struct osd_request *or, ...);/* NI */
-
-/*
- * Partition commands
- */
-void osd_req_create_partition(struct osd_request *or, osd_id partition);
-void osd_req_remove_partition(struct osd_request *or, osd_id partition);
-
-void osd_req_set_partition_key(struct osd_request *or,
-	osd_id partition, u8 new_key_id[OSD_CRYPTO_KEYID_SIZE],
-	u8 seed[OSD_CRYPTO_SEED_SIZE]);/* NI */
-
-/* list all collections in the partition
- * @list header must be init to zero on first run.
- *
- * Call osd_is_obj_list_done() to find if we got the complete list.
- */
-int osd_req_list_partition_collections(struct osd_request *or,
-	osd_id partition, osd_id initial_id, struct osd_obj_id_list *list,
-	unsigned nelem);
-
-/* list all objects in the partition
- * @list header must be init to zero on first run.
- *
- * Call osd_is_obj_list_done() to find if we got the complete list.
- */
-int osd_req_list_partition_objects(struct osd_request *or,
-	osd_id partition, osd_id initial_id, struct osd_obj_id_list *list,
-	unsigned nelem);
-
-void osd_req_flush_partition(struct osd_request *or,
-	osd_id partition, enum osd_options_flush_scope_values);
-
-/*
- * Collection commands
- */
-void osd_req_create_collection(struct osd_request *or,
-	const struct osd_obj_id *);/* NI */
-void osd_req_remove_collection(struct osd_request *or,
-	const struct osd_obj_id *);/* NI */
-
-/* list all objects in the collection */
-int osd_req_list_collection_objects(struct osd_request *or,
-	const struct osd_obj_id *, osd_id initial_id,
-	struct osd_obj_id_list *list, unsigned nelem);
-
-/* V2 only filtered list of objects in the collection */
-void osd_req_query(struct osd_request *or, ...);/* NI */
-
-void osd_req_flush_collection(struct osd_request *or,
-	const struct osd_obj_id *, enum osd_options_flush_scope_values);
-
-void osd_req_get_member_attrs(struct osd_request *or, ...);/* V2-only NI */
-void osd_req_set_member_attrs(struct osd_request *or, ...);/* V2-only NI */
-
-/*
- * Object commands
- */
-void osd_req_create_object(struct osd_request *or, struct osd_obj_id *);
-void osd_req_remove_object(struct osd_request *or, struct osd_obj_id *);
-
-void osd_req_write(struct osd_request *or,
-	const struct osd_obj_id *obj, u64 offset, struct bio *bio, u64 len);
-int osd_req_write_kern(struct osd_request *or,
-	const struct osd_obj_id *obj, u64 offset, void *buff, u64 len);
-void osd_req_append(struct osd_request *or,
-	const struct osd_obj_id *, struct bio *data_out);/* NI */
-void osd_req_create_write(struct osd_request *or,
-	const struct osd_obj_id *, struct bio *data_out, u64 offset);/* NI */
-void osd_req_clear(struct osd_request *or,
-	const struct osd_obj_id *, u64 offset, u64 len);/* NI */
-void osd_req_punch(struct osd_request *or,
-	const struct osd_obj_id *, u64 offset, u64 len);/* V2-only NI */
-
-void osd_req_flush_object(struct osd_request *or,
-	const struct osd_obj_id *, enum osd_options_flush_scope_values,
-	/*V2*/ u64 offset, /*V2*/ u64 len);
-
-void osd_req_read(struct osd_request *or,
-	const struct osd_obj_id *obj, u64 offset, struct bio *bio, u64 len);
-int osd_req_read_kern(struct osd_request *or,
-	const struct osd_obj_id *obj, u64 offset, void *buff, u64 len);
-
-/* Scatter/Gather write/read commands */
-int osd_req_write_sg(struct osd_request *or,
-	const struct osd_obj_id *obj, struct bio *bio,
-	const struct osd_sg_entry *sglist, unsigned numentries);
-int osd_req_read_sg(struct osd_request *or,
-	const struct osd_obj_id *obj, struct bio *bio,
-	const struct osd_sg_entry *sglist, unsigned numentries);
-int osd_req_write_sg_kern(struct osd_request *or,
-	const struct osd_obj_id *obj, void **buff,
-	const struct osd_sg_entry *sglist, unsigned numentries);
-int osd_req_read_sg_kern(struct osd_request *or,
-	const struct osd_obj_id *obj, void **buff,
-	const struct osd_sg_entry *sglist, unsigned numentries);
-
-/*
- * Root/Partition/Collection/Object Attributes commands
- */
-
-/* get before set */
-void osd_req_get_attributes(struct osd_request *or, const struct osd_obj_id *);
-
-/* set before get */
-void osd_req_set_attributes(struct osd_request *or, const struct osd_obj_id *);
-
-/*
- * Attributes appended to most commands
- */
-
-/* Attributes List mode (or V2 CDB) */
-  /*
-   * TODO: In ver2 if at finalize time only one attr was set and no gets,
-   * then the Attributes CDB mode is used automatically to save IO.
-   */
-
-/* set a list of attributes. */
-int osd_req_add_set_attr_list(struct osd_request *or,
-	const struct osd_attr *, unsigned nelem);
-
-/* get a list of attributes */
-int osd_req_add_get_attr_list(struct osd_request *or,
-	const struct osd_attr *, unsigned nelem);
-
-/*
- * Attributes list decoding
- * Must be called after osd_request.request was executed
- * It is called in a loop to decode the returned get_attr
- * (see osd_add_get_attr)
- */
-int osd_req_decode_get_attr_list(struct osd_request *or,
-	struct osd_attr *, int *nelem, void **iterator);
-
-/* Attributes Page mode */
-
-/*
- * Read an attribute page and optionally set one attribute
- *
- * Retrieves the attribute page directly to a user buffer.
- * @attr_page_data shall stay valid until end of execution.
- * See osd_attributes.h for common page structures
- */
-int osd_req_add_get_attr_page(struct osd_request *or,
-	u32 page_id, void *attr_page_data, unsigned max_page_len,
-	const struct osd_attr *set_one);
-
-#endif /* __OSD_LIB_H__ */
diff --git a/include/scsi/osd_ore.h b/include/scsi/osd_ore.h
deleted file mode 100644
index 7a8d2cd30328..000000000000
--- a/include/scsi/osd_ore.h
+++ /dev/null
@@ -1,201 +0,0 @@
-/*
- * Copyright (C) 2011
- * Boaz Harrosh <ooo@electrozaur.com>
- *
- * Public Declarations of the ORE API
- *
- * This file is part of the ORE (Object Raid Engine) library.
- *
- * ORE is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation. (GPL v2)
- *
- * ORE 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 the ORE; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- */
-#ifndef __ORE_H__
-#define __ORE_H__
-
-#include <scsi/osd_initiator.h>
-#include <scsi/osd_attributes.h>
-#include <scsi/osd_sec.h>
-#include <linux/pnfs_osd_xdr.h>
-#include <linux/bug.h>
-
-struct ore_comp {
-	struct osd_obj_id	obj;
-	u8			cred[OSD_CAP_LEN];
-};
-
-struct ore_layout {
-	/* Our way of looking at the data_map */
-	enum pnfs_osd_raid_algorithm4
-		 raid_algorithm;
-	unsigned stripe_unit;
-	unsigned mirrors_p1;
-
-	unsigned group_width;
-	unsigned parity;
-	u64	 group_depth;
-	unsigned group_count;
-
-	/* Cached often needed calculations filled in by
-	 * ore_verify_layout
-	 */
-	unsigned long max_io_length;	/* Max length that should be passed to
-					 * ore_get_rw_state
-					 */
-};
-
-struct ore_dev {
-	struct osd_dev *od;
-};
-
-struct ore_components {
-	unsigned	first_dev;		/* First logical device no    */
-	unsigned	numdevs;		/* Num of devices in array    */
-	/* If @single_comp == EC_SINGLE_COMP, @comps points to a single
-	 * component. else there are @numdevs components
-	 */
-	enum EC_COMP_USAGE {
-		EC_SINGLE_COMP = 0, EC_MULTPLE_COMPS = 0xffffffff
-	}		single_comp;
-	struct ore_comp	*comps;
-
-	/* Array of pointers to ore_dev-* . User will usually have these pointed
-	 * too a bigger struct which contain an "ore_dev ored" member and use
-	 * container_of(oc->ods[i], struct foo_dev, ored) to access the bigger
-	 * structure.
-	 */
-	struct ore_dev	**ods;
-};
-
-/* ore_comp_dev Recievies a logical device index */
-static inline struct osd_dev *ore_comp_dev(
-	const struct ore_components *oc, unsigned i)
-{
-	BUG_ON((i < oc->first_dev) || (oc->first_dev + oc->numdevs <= i));
-	return oc->ods[i - oc->first_dev]->od;
-}
-
-static inline void ore_comp_set_dev(
-	struct ore_components *oc, unsigned i, struct osd_dev *od)
-{
-	oc->ods[i - oc->first_dev]->od = od;
-}
-
-struct ore_striping_info {
-	u64 offset;
-	u64 obj_offset;
-	u64 length;
-	u64 first_stripe_start; /* only used in raid writes */
-	u64 M; /* for truncate */
-	unsigned bytes_in_stripe;
-	unsigned dev;
-	unsigned par_dev;
-	unsigned unit_off;
-	unsigned cur_pg;
-	unsigned cur_comp;
-	unsigned maxdevUnits;
-};
-
-struct ore_io_state;
-typedef void (*ore_io_done_fn)(struct ore_io_state *ios, void *private);
-struct _ore_r4w_op {
-	/* @Priv given here is passed ios->private */
-	struct page * (*get_page)(void *priv, u64 page_index, bool *uptodate);
-	void (*put_page)(void *priv, struct page *page);
-};
-
-struct ore_io_state {
-	struct kref		kref;
-	struct ore_striping_info si;
-
-	void			*private;
-	ore_io_done_fn	done;
-
-	struct ore_layout	*layout;
-	struct ore_components	*oc;
-
-	/* Global read/write IO*/
-	loff_t			offset;
-	unsigned long		length;
-	void			*kern_buff;
-
-	struct page		**pages;
-	unsigned		nr_pages;
-	unsigned		pgbase;
-	unsigned		pages_consumed;
-
-	/* Attributes */
-	unsigned		in_attr_len;
-	struct osd_attr		*in_attr;
-	unsigned		out_attr_len;
-	struct osd_attr		*out_attr;
-
-	bool			reading;
-
-	/* House keeping of Parity pages */
-	bool			extra_part_alloc;
-	struct page		**parity_pages;
-	unsigned		max_par_pages;
-	unsigned		cur_par_page;
-	unsigned		sgs_per_dev;
-	struct __stripe_pages_2d *sp2d;
-	struct ore_io_state	 *ios_read_4_write;
-	const struct _ore_r4w_op *r4w;
-
-	/* Variable array of size numdevs */
-	unsigned numdevs;
-	struct ore_per_dev_state {
-		struct osd_request *or;
-		struct bio *bio;
-		loff_t offset;
-		unsigned length;
-		unsigned last_sgs_total;
-		unsigned dev;
-		struct osd_sg_entry *sglist;
-		unsigned cur_sg;
-	} per_dev[];
-};
-
-static inline unsigned ore_io_state_size(unsigned numdevs)
-{
-	return sizeof(struct ore_io_state) +
-		sizeof(struct ore_per_dev_state) * numdevs;
-}
-
-/* ore.c */
-int ore_verify_layout(unsigned total_comps, struct ore_layout *layout);
-void ore_calc_stripe_info(struct ore_layout *layout, u64 file_offset,
-			  u64 length, struct ore_striping_info *si);
-int ore_get_rw_state(struct ore_layout *layout, struct ore_components *comps,
-		     bool is_reading, u64 offset, u64 length,
-		     struct ore_io_state **ios);
-int ore_get_io_state(struct ore_layout *layout, struct ore_components *comps,
-		     struct ore_io_state **ios);
-void ore_put_io_state(struct ore_io_state *ios);
-
-typedef void (*ore_on_dev_error)(struct ore_io_state *ios, struct ore_dev *od,
-	unsigned dev_index, enum osd_err_priority oep,
-	u64 dev_offset, u64  dev_len);
-int ore_check_io(struct ore_io_state *ios, ore_on_dev_error rep);
-
-int ore_create(struct ore_io_state *ios);
-int ore_remove(struct ore_io_state *ios);
-int ore_write(struct ore_io_state *ios);
-int ore_read(struct ore_io_state *ios);
-int ore_truncate(struct ore_layout *layout, struct ore_components *comps,
-		 u64 size);
-
-int extract_attr_from_ios(struct ore_io_state *ios, struct osd_attr *attr);
-
-extern const struct osd_attr g_attr_logical_length;
-
-#endif