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https://github.com/kdave/btrfs-progs
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22c842e7e1
The header extent_io.h is internal and provides only structures defined in ctree.h, we don't need anything else besides the structures and declarations used for inline functions in other headers. Signed-off-by: David Sterba <dsterba@suse.com>
68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef __BTRFS_EXTENT_IO_H__
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#define __BTRFS_EXTENT_IO_H__
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#if BTRFS_FLAT_INCLUDES
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#include "kerncompat.h"
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#include "libbtrfs/extent-cache.h"
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#include "kernel-lib/list.h"
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#else
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#include <btrfs/kerncompat.h>
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#include <btrfs/extent-cache.h>
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#include <btrfs/list.h>
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#endif /* BTRFS_FLAT_INCLUDES */
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struct btrfs_fs_info;
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struct extent_io_tree {
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struct cache_tree state;
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struct cache_tree cache;
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struct list_head lru;
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u64 cache_size;
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u64 max_cache_size;
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};
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struct extent_state {
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struct cache_extent cache_node;
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u64 start;
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u64 end;
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int refs;
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unsigned long state;
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u64 xprivate;
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};
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struct extent_buffer {
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struct cache_extent cache_node;
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u64 start;
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struct list_head lru;
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struct list_head recow;
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u32 len;
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int refs;
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u32 flags;
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struct btrfs_fs_info *fs_info;
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char data[] __attribute__((aligned(8)));
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};
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void read_extent_buffer(const struct extent_buffer *eb, void *dst,
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unsigned long start, unsigned long len);
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void write_extent_buffer(struct extent_buffer *eb, const void *src,
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unsigned long start, unsigned long len);
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#endif
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