mirror of https://gitee.com/openkylin/linux.git
68 lines
2.6 KiB
C
68 lines
2.6 KiB
C
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/*
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* Data types and function declerations for interfacing with the
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* pNFS standard object layout driver.
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*
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* Copyright (C) 2007 Panasas Inc. [year of first publication]
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* All rights reserved.
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*
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* Benny Halevy <bhalevy@panasas.com>
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* Boaz Harrosh <bharrosh@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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* See the file COPYING included with this distribution for more details.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Panasas company nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _OBJLAYOUT_H
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#define _OBJLAYOUT_H
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#include <linux/nfs_fs.h>
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#include <linux/pnfs_osd_xdr.h>
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#include "../pnfs.h"
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/*
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* Raid engine I/O API
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*/
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extern int objio_alloc_lseg(struct pnfs_layout_segment **outp,
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struct pnfs_layout_hdr *pnfslay,
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struct pnfs_layout_range *range,
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struct xdr_stream *xdr,
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gfp_t gfp_flags);
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extern void objio_free_lseg(struct pnfs_layout_segment *lseg);
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/*
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* exported generic objects function vectors
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*/
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extern struct pnfs_layout_segment *objlayout_alloc_lseg(
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struct pnfs_layout_hdr *,
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struct nfs4_layoutget_res *,
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gfp_t gfp_flags);
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extern void objlayout_free_lseg(struct pnfs_layout_segment *);
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#endif /* _OBJLAYOUT_H */
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