diff options
Diffstat (limited to 'fs/btrfs/ref-cache.h')
| -rw-r--r-- | fs/btrfs/ref-cache.h | 76 | 
1 files changed, 0 insertions, 76 deletions
diff --git a/fs/btrfs/ref-cache.h b/fs/btrfs/ref-cache.h deleted file mode 100644 index e2a55cb2072..00000000000 --- a/fs/btrfs/ref-cache.h +++ /dev/null @@ -1,76 +0,0 @@ -/* - * Copyright (C) 2008 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 __REFCACHE__ -#define __REFCACHE__ - -struct btrfs_extent_info { -	/* bytenr and num_bytes find the extent in the extent allocation tree */ -	u64 bytenr; -	u64 num_bytes; - -	/* objectid and offset find the back reference for the file */ -	u64 objectid; -	u64 offset; -}; - -struct btrfs_leaf_ref { -	struct rb_node rb_node; -	struct btrfs_leaf_ref_tree *tree; -	int in_tree; -	atomic_t usage; - -	u64 root_gen; -	u64 bytenr; -	u64 owner; -	u64 generation; -	int nritems; - -	struct list_head list; -	struct btrfs_extent_info extents[]; -}; - -static inline size_t btrfs_leaf_ref_size(int nr_extents) -{ -	return sizeof(struct btrfs_leaf_ref) + -	       sizeof(struct btrfs_extent_info) * nr_extents; -} - -static inline void btrfs_leaf_ref_tree_init(struct btrfs_leaf_ref_tree *tree) -{ -	tree->root = RB_ROOT; -	INIT_LIST_HEAD(&tree->list); -	spin_lock_init(&tree->lock); -} - -static inline int btrfs_leaf_ref_tree_empty(struct btrfs_leaf_ref_tree *tree) -{ -	return RB_EMPTY_ROOT(&tree->root); -} - -void btrfs_leaf_ref_tree_init(struct btrfs_leaf_ref_tree *tree); -struct btrfs_leaf_ref *btrfs_alloc_leaf_ref(struct btrfs_root *root, -					    int nr_extents); -void btrfs_free_leaf_ref(struct btrfs_root *root, struct btrfs_leaf_ref *ref); -struct btrfs_leaf_ref *btrfs_lookup_leaf_ref(struct btrfs_root *root, -					     u64 bytenr); -int btrfs_add_leaf_ref(struct btrfs_root *root, struct btrfs_leaf_ref *ref, -		       int shared); -int btrfs_remove_leaf_refs(struct btrfs_root *root, u64 max_root_gen, -			   int shared); -int btrfs_remove_leaf_ref(struct btrfs_root *root, struct btrfs_leaf_ref *ref); -#endif  | 
