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| author | Nicholas D Steeves <nsteeves@gmail.com> | 2016-04-23 00:41:30 +0100 |
|---|---|---|
| committer | Nicholas D Steeves <nsteeves@gmail.com> | 2016-04-23 00:41:30 +0100 |
| commit | cec572daccafa1e912cbed363df6f84687778c6f (patch) | |
| tree | 7d99ab9f73d25c1ed8eaf6393f6374edf5316b03 /free-space-cache.h | |
btrfs-progs (4.4.1-1.1) unstable; urgency=medium
* Non-maintainer upload.
* New upstream release.
* Rename package to btrfs-progs (Closes: #780081)
* Update standards version to 3.9.7 (no changes needed).
* debian/control: Add "Breaks" per Gianfranco Costamagna's suggestion
* Change lintian override to reflect package rename
* Switch from using postinst and postrm to using triggers
per Christian Seiler's recommendation.
# imported from the archive
Diffstat (limited to 'free-space-cache.h')
| -rw-r--r-- | free-space-cache.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/free-space-cache.h b/free-space-cache.h new file mode 100644 index 00000000..9214077a --- /dev/null +++ b/free-space-cache.h @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2009 Oracle. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License v2 as published by the Free Software Foundation. + * + * This program 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 this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + */ + +#ifndef __BTRFS_FREE_SPACE_CACHE_H__ +#define __BTRFS_FREE_SPACE_CACHE_H__ + +#include "kerncompat.h" +#include "ctree.h" +#include "rbtree.h" + +struct btrfs_free_space { + struct rb_node offset_index; + u64 offset; + u64 bytes; + unsigned long *bitmap; + struct list_head list; +}; + +struct btrfs_free_space_ctl { + struct rb_root free_space_offset; + u64 free_space; + int extents_thresh; + int free_extents; + int total_bitmaps; + int unit; + u64 start; + void *private; + u32 sectorsize; +}; + +int load_free_space_cache(struct btrfs_fs_info *fs_info, + struct btrfs_block_group_cache *block_group); + +void __btrfs_remove_free_space_cache(struct btrfs_free_space_ctl *ctl); +void btrfs_remove_free_space_cache(struct btrfs_block_group_cache + *block_group); +void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group, + u64 bytes); +struct btrfs_free_space * +btrfs_find_free_space(struct btrfs_free_space_ctl *ctl, u64 offset, u64 bytes); +int btrfs_init_free_space_ctl(struct btrfs_block_group_cache *block_group, + int sectorsize); +void unlink_free_space(struct btrfs_free_space_ctl *ctl, + struct btrfs_free_space *info); +int btrfs_add_free_space(struct btrfs_free_space_ctl *ctl, u64 offset, + u64 bytes); +#endif |