/* * btnode.h - NILFS B-tree node cache * * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * * Written by Seiji Kihara <kihara@osrg.net> * Revised by Ryusuke Konishi <ryusuke@osrg.net> */ #ifndef _NILFS_BTNODE_H #define _NILFS_BTNODE_H #include <linux/types.h> #include <linux/buffer_head.h> #include <linux/fs.h> #include <linux/backing-dev.h> struct nilfs_btnode_chkey_ctxt { __u64 oldkey; __u64 newkey; struct buffer_head *bh; struct buffer_head *newbh; }; void nilfs_btnode_cache_init_once(struct address_space *); void nilfs_btnode_cache_init(struct address_space *); void nilfs_btnode_cache_clear(struct address_space *); int nilfs_btnode_submit_block(struct address_space *, __u64, sector_t, struct buffer_head **, int); int nilfs_btnode_get(struct address_space *, __u64, sector_t, struct buffer_head **, int); void nilfs_btnode_delete(struct buffer_head *); int nilfs_btnode_prepare_change_key(struct address_space *, struct nilfs_btnode_chkey_ctxt *); void nilfs_btnode_commit_change_key(struct address_space *, struct nilfs_btnode_chkey_ctxt *); void nilfs_btnode_abort_change_key(struct address_space *, struct nilfs_btnode_chkey_ctxt *); #define nilfs_btnode_mark_dirty(bh) nilfs_mark_buffer_dirty(bh) #endif /* _NILFS_BTNODE_H */