eb8a61b235
Kernel clear_cache mount option will only rebuild free space cache if the used space of that chunk has changed. So it won't ensure any corrupted free space cache get cleared. So add a new option "--clear-space-cache v1|v2" to btrfsck, to completely wipe out free space cache. So kernel won't complain again. Reported-by: Ivan P <chrnosphered@gmail.com> Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> [ adjusted error messages, doc wording changes ] Signed-off-by: David Sterba <dsterba@suse.com>
65 lines
2 KiB
C
65 lines
2 KiB
C
/*
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* Copyright (C) 2009 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_FREE_SPACE_CACHE_H__
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#define __BTRFS_FREE_SPACE_CACHE_H__
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#include "kerncompat.h"
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#include "ctree.h"
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#include "rbtree.h"
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struct btrfs_free_space {
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struct rb_node offset_index;
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u64 offset;
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u64 bytes;
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unsigned long *bitmap;
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struct list_head list;
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};
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struct btrfs_free_space_ctl {
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struct rb_root free_space_offset;
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u64 free_space;
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int extents_thresh;
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int free_extents;
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int total_bitmaps;
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int unit;
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u64 start;
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void *private;
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u32 sectorsize;
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};
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int load_free_space_cache(struct btrfs_fs_info *fs_info,
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struct btrfs_block_group_cache *block_group);
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void __btrfs_remove_free_space_cache(struct btrfs_free_space_ctl *ctl);
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void btrfs_remove_free_space_cache(struct btrfs_block_group_cache
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*block_group);
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void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group,
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u64 bytes);
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struct btrfs_free_space *
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btrfs_find_free_space(struct btrfs_free_space_ctl *ctl, u64 offset, u64 bytes);
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int btrfs_init_free_space_ctl(struct btrfs_block_group_cache *block_group,
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int sectorsize);
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void unlink_free_space(struct btrfs_free_space_ctl *ctl,
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struct btrfs_free_space *info);
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int btrfs_add_free_space(struct btrfs_free_space_ctl *ctl, u64 offset,
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u64 bytes);
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int btrfs_clear_free_space_cache(struct btrfs_fs_info *fs_info,
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struct btrfs_block_group_cache *bg);
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#endif
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