| /* |
| * Copyright (C) 2007 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 __PENDING_EXTENT__ |
| #define __PENDING_EXTENT__ |
| #include "kerncompat.h" |
| #include "rbtree.h" |
| |
| struct cache_tree { |
| struct rb_root root; |
| }; |
| |
| struct cache_extent { |
| struct rb_node rb_node; |
| u64 start; |
| u64 size; |
| }; |
| |
| void cache_tree_init(struct cache_tree *tree); |
| void remove_cache_extent(struct cache_tree *tree, |
| struct cache_extent *pe); |
| struct cache_extent *find_first_cache_extent(struct cache_tree *tree, |
| u64 start); |
| struct cache_extent *prev_cache_extent(struct cache_extent *pe); |
| struct cache_extent *next_cache_extent(struct cache_extent *pe); |
| struct cache_extent *find_cache_extent(struct cache_tree *tree, |
| u64 start, u64 size); |
| int insert_cache_extent(struct cache_tree *tree, u64 start, u64 size); |
| int insert_existing_cache_extent(struct cache_tree *tree, |
| struct cache_extent *pe); |
| |
| static inline void free_cache_extent(struct cache_extent *pe) |
| { |
| free(pe); |
| } |
| |
| struct cache_extent *alloc_pending_extent(u64 start, u64 size); |
| |
| #endif |