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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>
This commit is contained in:
Christoph Hellwig
committed by
Martin K. Petersen
Martin K. Petersen
parent
80f2121380
commit
19fcae3d4f
@@ -1,511 +0,0 @@
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/*
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* osd_initiator.h - OSD initiator API definition
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*
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* Copyright (C) 2008 Panasas Inc. All rights reserved.
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*
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* Authors:
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* Boaz Harrosh <ooo@electrozaur.com>
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* Benny Halevy <bhalevy@panasas.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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*
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*/
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#ifndef __OSD_INITIATOR_H__
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#define __OSD_INITIATOR_H__
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#include <scsi/osd_protocol.h>
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#include <scsi/osd_types.h>
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#include <linux/blkdev.h>
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#include <scsi/scsi_device.h>
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/* Note: "NI" in comments below means "Not Implemented yet" */
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/* Configure of code:
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* #undef if you *don't* want OSD v1 support in runtime.
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* If #defined the initiator will dynamically configure to encode OSD v1
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* CDB's if the target is detected to be OSD v1 only.
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* OSD v2 only commands, options, and attributes will be ignored if target
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* is v1 only.
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* If #defined will result in bigger/slower code (OK Slower maybe not)
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* Q: Should this be CONFIG_SCSI_OSD_VER1_SUPPORT and set from Kconfig?
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*/
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#define OSD_VER1_SUPPORT y
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enum osd_std_version {
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OSD_VER_NONE = 0,
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OSD_VER1 = 1,
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OSD_VER2 = 2,
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};
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/*
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* Object-based Storage Device.
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* This object represents an OSD device.
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* It is not a full linux device in any way. It is only
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* a place to hang resources associated with a Linux
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* request Q and some default properties.
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*/
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struct osd_dev {
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struct scsi_device *scsi_device;
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unsigned def_timeout;
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#ifdef OSD_VER1_SUPPORT
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enum osd_std_version version;
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#endif
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};
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/* Unique Identification of an OSD device */
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struct osd_dev_info {
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unsigned systemid_len;
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u8 systemid[OSD_SYSTEMID_LEN];
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unsigned osdname_len;
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u8 *osdname;
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};
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/* Retrieve/return osd_dev(s) for use by Kernel clients
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* Use IS_ERR/ERR_PTR on returned "osd_dev *".
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*/
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struct osd_dev *osduld_path_lookup(const char *dev_name);
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struct osd_dev *osduld_info_lookup(const struct osd_dev_info *odi);
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void osduld_put_device(struct osd_dev *od);
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const struct osd_dev_info *osduld_device_info(struct osd_dev *od);
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bool osduld_device_same(struct osd_dev *od, const struct osd_dev_info *odi);
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/* Add/remove test ioctls from external modules */
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typedef int (do_test_fn)(struct osd_dev *od, unsigned cmd, unsigned long arg);
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int osduld_register_test(unsigned ioctl, do_test_fn *do_test);
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void osduld_unregister_test(unsigned ioctl);
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/* These are called by uld at probe time */
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void osd_dev_init(struct osd_dev *od, struct scsi_device *scsi_device);
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void osd_dev_fini(struct osd_dev *od);
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/**
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* osd_auto_detect_ver - Detect the OSD version, return Unique Identification
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*
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* @od: OSD target lun handle
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* @caps: Capabilities authorizing OSD root read attributes access
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* @odi: Retrieved information uniquely identifying the osd target lun
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* Note: odi->osdname must be kfreed by caller.
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*
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* Auto detects the OSD version of the OSD target and sets the @od
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* accordingly. Meanwhile also returns the "system id" and "osd name" root
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* attributes which uniquely identify the OSD target. This member is usually
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* called by the ULD. ULD users should call osduld_device_info().
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* This rutine allocates osd requests and memory at GFP_KERNEL level and might
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* sleep.
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*/
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int osd_auto_detect_ver(struct osd_dev *od,
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void *caps, struct osd_dev_info *odi);
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static inline struct request_queue *osd_request_queue(struct osd_dev *od)
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{
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return od->scsi_device->request_queue;
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}
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/* we might want to use function vector in the future */
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static inline void osd_dev_set_ver(struct osd_dev *od, enum osd_std_version v)
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{
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#ifdef OSD_VER1_SUPPORT
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od->version = v;
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#endif
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}
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static inline bool osd_dev_is_ver1(struct osd_dev *od)
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{
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#ifdef OSD_VER1_SUPPORT
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return od->version == OSD_VER1;
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#else
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return false;
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#endif
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}
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struct osd_request;
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typedef void (osd_req_done_fn)(struct osd_request *or, void *private);
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struct osd_request {
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struct osd_cdb cdb;
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struct osd_data_out_integrity_info out_data_integ;
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struct osd_data_in_integrity_info in_data_integ;
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struct osd_dev *osd_dev;
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struct request *request;
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struct _osd_req_data_segment {
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void *buff;
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unsigned alloc_size; /* 0 here means: don't call kfree */
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unsigned total_bytes;
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} cdb_cont, set_attr, enc_get_attr, get_attr;
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struct _osd_io_info {
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struct bio *bio;
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u64 total_bytes;
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u64 residual;
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struct request *req;
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struct _osd_req_data_segment *last_seg;
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u8 *pad_buff;
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} out, in;
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unsigned timeout;
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unsigned retries;
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unsigned sense_len;
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u8 sense[OSD_MAX_SENSE_LEN];
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enum osd_attributes_mode attributes_mode;
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osd_req_done_fn *async_done;
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void *async_private;
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blk_status_t async_error;
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int req_errors;
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};
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static inline bool osd_req_is_ver1(struct osd_request *or)
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{
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return osd_dev_is_ver1(or->osd_dev);
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}
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/*
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* How to use the osd library:
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*
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* osd_start_request
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* Allocates a request.
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*
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* osd_req_*
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* Call one of, to encode the desired operation.
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*
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* osd_add_{get,set}_attr
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* Optionally add attributes to the CDB, list or page mode.
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*
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* osd_finalize_request
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* Computes final data out/in offsets and signs the request,
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* making it ready for execution.
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*
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* osd_execute_request
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* May be called to execute it through the block layer. Other wise submit
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* the associated block request in some other way.
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*
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* After execution:
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* osd_req_decode_sense
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* Decodes sense information to verify execution results.
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*
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* osd_req_decode_get_attr
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* Retrieve osd_add_get_attr_list() values if used.
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*
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* osd_end_request
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* Must be called to deallocate the request.
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*/
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/**
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* osd_start_request - Allocate and initialize an osd_request
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*
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* @osd_dev: OSD device that holds the scsi-device and default values
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* that the request is associated with.
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*
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* Allocate osd_request and initialize all members to the
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* default/initial state.
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*/
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struct osd_request *osd_start_request(struct osd_dev *od);
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enum osd_req_options {
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OSD_REQ_FUA = 0x08, /* Force Unit Access */
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OSD_REQ_DPO = 0x10, /* Disable Page Out */
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OSD_REQ_BYPASS_TIMESTAMPS = 0x80,
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};
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/**
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* osd_finalize_request - Sign request and prepare request for execution
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*
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* @or: osd_request to prepare
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* @options: combination of osd_req_options bit flags or 0.
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* @cap: A Pointer to an OSD_CAP_LEN bytes buffer that is received from
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* The security manager as capabilities for this cdb.
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* @cap_key: The cryptographic key used to sign the cdb/data. Can be null
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* if NOSEC is used.
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*
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* The actual request and bios are only allocated here, so are the get_attr
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* buffers that will receive the returned attributes. Copy's @cap to cdb.
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* Sign the cdb/data with @cap_key.
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*/
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int osd_finalize_request(struct osd_request *or,
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u8 options, const void *cap, const u8 *cap_key);
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/**
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* osd_execute_request - Execute the request synchronously through block-layer
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*
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* @or: osd_request to Executed
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*
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* Calls blk_execute_rq to q the command and waits for completion.
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*/
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int osd_execute_request(struct osd_request *or);
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/**
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* osd_execute_request_async - Execute the request without waitting.
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*
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* @or: - osd_request to Executed
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* @done: (Optional) - Called at end of execution
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* @private: - Will be passed to @done function
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*
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* Calls blk_execute_rq_nowait to queue the command. When execution is done
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* optionally calls @done with @private as parameter. @or->async_error will
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* have the return code
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*/
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int osd_execute_request_async(struct osd_request *or,
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osd_req_done_fn *done, void *private);
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/**
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* osd_req_decode_sense_full - Decode sense information after execution.
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*
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* @or: - osd_request to examine
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* @osi - Receives a more detailed error report information (optional).
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* @silent - Do not print to dmsg (Even if enabled)
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* @bad_obj_list - Some commands act on multiple objects. Failed objects will
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* be received here (optional)
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* @max_obj - Size of @bad_obj_list.
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* @bad_attr_list - List of failing attributes (optional)
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* @max_attr - Size of @bad_attr_list.
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*
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* After execution, osd_request results are analyzed using this function. The
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* return code is the final disposition on the error. So it is possible that a
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* CHECK_CONDITION was returned from target but this will return NO_ERROR, for
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* example on recovered errors. All parameters are optional if caller does
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* not need any returned information.
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* Note: This function will also dump the error to dmsg according to settings
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* of the SCSI_OSD_DPRINT_SENSE Kconfig value. Set @silent if you know the
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* command would routinely fail, to not spam the dmsg file.
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*/
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/**
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* osd_err_priority - osd categorized return codes in ascending severity.
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*
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* The categories are borrowed from the pnfs_osd_errno enum.
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* See comments for translated Linux codes returned by osd_req_decode_sense.
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*/
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enum osd_err_priority {
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OSD_ERR_PRI_NO_ERROR = 0,
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/* Recoverable, caller should clear_highpage() all pages */
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OSD_ERR_PRI_CLEAR_PAGES = 1, /* -EFAULT */
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OSD_ERR_PRI_RESOURCE = 2, /* -ENOMEM */
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OSD_ERR_PRI_BAD_CRED = 3, /* -EINVAL */
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OSD_ERR_PRI_NO_ACCESS = 4, /* -EACCES */
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OSD_ERR_PRI_UNREACHABLE = 5, /* any other */
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OSD_ERR_PRI_NOT_FOUND = 6, /* -ENOENT */
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OSD_ERR_PRI_NO_SPACE = 7, /* -ENOSPC */
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OSD_ERR_PRI_EIO = 8, /* -EIO */
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};
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struct osd_sense_info {
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enum osd_err_priority osd_err_pri;
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int key; /* one of enum scsi_sense_keys */
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int additional_code ; /* enum osd_additional_sense_codes */
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union { /* Sense specific information */
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u16 sense_info;
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u16 cdb_field_offset; /* scsi_invalid_field_in_cdb */
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};
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union { /* Command specific information */
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u64 command_info;
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};
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u32 not_initiated_command_functions; /* osd_command_functions_bits */
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u32 completed_command_functions; /* osd_command_functions_bits */
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struct osd_obj_id obj;
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struct osd_attr attr;
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};
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int osd_req_decode_sense_full(struct osd_request *or,
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struct osd_sense_info *osi, bool silent,
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struct osd_obj_id *bad_obj_list, int max_obj,
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struct osd_attr *bad_attr_list, int max_attr);
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static inline int osd_req_decode_sense(struct osd_request *or,
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struct osd_sense_info *osi)
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{
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return osd_req_decode_sense_full(or, osi, false, NULL, 0, NULL, 0);
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}
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/**
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* osd_end_request - return osd_request to free store
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*
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* @or: osd_request to free
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*
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* Deallocate all osd_request resources (struct req's, BIOs, buffers, etc.)
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*/
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void osd_end_request(struct osd_request *or);
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/*
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* CDB Encoding
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*
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* Note: call only one of the following methods.
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*/
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/*
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* Device commands
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*/
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void osd_req_set_master_seed_xchg(struct osd_request *or, ...);/* NI */
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void osd_req_set_master_key(struct osd_request *or, ...);/* NI */
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void osd_req_format(struct osd_request *or, u64 tot_capacity);
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/* list all partitions
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* @list header must be initialized to zero on first run.
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*
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* Call osd_is_obj_list_done() to find if we got the complete list.
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*/
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int osd_req_list_dev_partitions(struct osd_request *or,
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osd_id initial_id, struct osd_obj_id_list *list, unsigned nelem);
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void osd_req_flush_obsd(struct osd_request *or,
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enum osd_options_flush_scope_values);
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void osd_req_perform_scsi_command(struct osd_request *or,
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const u8 *cdb, ...);/* NI */
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void osd_req_task_management(struct osd_request *or, ...);/* NI */
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/*
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* Partition commands
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*/
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void osd_req_create_partition(struct osd_request *or, osd_id partition);
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void osd_req_remove_partition(struct osd_request *or, osd_id partition);
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void osd_req_set_partition_key(struct osd_request *or,
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osd_id partition, u8 new_key_id[OSD_CRYPTO_KEYID_SIZE],
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u8 seed[OSD_CRYPTO_SEED_SIZE]);/* NI */
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/* list all collections in the partition
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* @list header must be init to zero on first run.
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*
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* Call osd_is_obj_list_done() to find if we got the complete list.
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*/
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int osd_req_list_partition_collections(struct osd_request *or,
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osd_id partition, osd_id initial_id, struct osd_obj_id_list *list,
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unsigned nelem);
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/* list all objects in the partition
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* @list header must be init to zero on first run.
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*
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* Call osd_is_obj_list_done() to find if we got the complete list.
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*/
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int osd_req_list_partition_objects(struct osd_request *or,
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osd_id partition, osd_id initial_id, struct osd_obj_id_list *list,
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unsigned nelem);
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void osd_req_flush_partition(struct osd_request *or,
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osd_id partition, enum osd_options_flush_scope_values);
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/*
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* Collection commands
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*/
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void osd_req_create_collection(struct osd_request *or,
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const struct osd_obj_id *);/* NI */
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void osd_req_remove_collection(struct osd_request *or,
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const struct osd_obj_id *);/* NI */
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/* list all objects in the collection */
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int osd_req_list_collection_objects(struct osd_request *or,
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const struct osd_obj_id *, osd_id initial_id,
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struct osd_obj_id_list *list, unsigned nelem);
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/* V2 only filtered list of objects in the collection */
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void osd_req_query(struct osd_request *or, ...);/* NI */
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void osd_req_flush_collection(struct osd_request *or,
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const struct osd_obj_id *, enum osd_options_flush_scope_values);
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void osd_req_get_member_attrs(struct osd_request *or, ...);/* V2-only NI */
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void osd_req_set_member_attrs(struct osd_request *or, ...);/* V2-only NI */
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/*
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* Object commands
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*/
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void osd_req_create_object(struct osd_request *or, struct osd_obj_id *);
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void osd_req_remove_object(struct osd_request *or, struct osd_obj_id *);
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void osd_req_write(struct osd_request *or,
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const struct osd_obj_id *obj, u64 offset, struct bio *bio, u64 len);
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int osd_req_write_kern(struct osd_request *or,
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const struct osd_obj_id *obj, u64 offset, void *buff, u64 len);
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void osd_req_append(struct osd_request *or,
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const struct osd_obj_id *, struct bio *data_out);/* NI */
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void osd_req_create_write(struct osd_request *or,
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const struct osd_obj_id *, struct bio *data_out, u64 offset);/* NI */
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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__ */
|
||||
@@ -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
|
||||
Reference in New Issue
Block a user