diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/nilfs2/mdt.h')
| -rw-r--r-- | ANDROID_3.4.5/fs/nilfs2/mdt.h | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/ANDROID_3.4.5/fs/nilfs2/mdt.h b/ANDROID_3.4.5/fs/nilfs2/mdt.h deleted file mode 100644 index ab20a4ba..00000000 --- a/ANDROID_3.4.5/fs/nilfs2/mdt.h +++ /dev/null @@ -1,110 +0,0 @@ -/* - * mdt.h - NILFS meta data file prototype and definitions - * - * 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 Ryusuke Konishi <ryusuke@osrg.net> - */ - -#ifndef _NILFS_MDT_H -#define _NILFS_MDT_H - -#include <linux/buffer_head.h> -#include <linux/blockgroup_lock.h> -#include "nilfs.h" -#include "page.h" - -struct nilfs_shadow_map { - struct nilfs_bmap_store bmap_store; - struct address_space frozen_data; - struct address_space frozen_btnodes; - struct list_head frozen_buffers; -}; - -/** - * struct nilfs_mdt_info - on-memory private data of meta data files - * @mi_sem: reader/writer semaphore for meta data operations - * @mi_bgl: per-blockgroup locking - * @mi_entry_size: size of an entry - * @mi_first_entry_offset: offset to the first entry - * @mi_entries_per_block: number of entries in a block - * @mi_palloc_cache: persistent object allocator cache - * @mi_shadow: shadow of bmap and page caches - * @mi_blocks_per_group: number of blocks in a group - * @mi_blocks_per_desc_block: number of blocks per descriptor block - */ -struct nilfs_mdt_info { - struct rw_semaphore mi_sem; - struct blockgroup_lock *mi_bgl; - unsigned mi_entry_size; - unsigned mi_first_entry_offset; - unsigned long mi_entries_per_block; - struct nilfs_palloc_cache *mi_palloc_cache; - struct nilfs_shadow_map *mi_shadow; - unsigned long mi_blocks_per_group; - unsigned long mi_blocks_per_desc_block; -}; - -static inline struct nilfs_mdt_info *NILFS_MDT(const struct inode *inode) -{ - return inode->i_private; -} - -/* Default GFP flags using highmem */ -#define NILFS_MDT_GFP (__GFP_WAIT | __GFP_IO | __GFP_HIGHMEM) - -int nilfs_mdt_get_block(struct inode *, unsigned long, int, - void (*init_block)(struct inode *, - struct buffer_head *, void *), - struct buffer_head **); -int nilfs_mdt_delete_block(struct inode *, unsigned long); -int nilfs_mdt_forget_block(struct inode *, unsigned long); -int nilfs_mdt_mark_block_dirty(struct inode *, unsigned long); -int nilfs_mdt_fetch_dirty(struct inode *); - -int nilfs_mdt_init(struct inode *inode, gfp_t gfp_mask, size_t objsz); -void nilfs_mdt_set_entry_size(struct inode *, unsigned, unsigned); - -int nilfs_mdt_setup_shadow_map(struct inode *inode, - struct nilfs_shadow_map *shadow); -int nilfs_mdt_save_to_shadow_map(struct inode *inode); -void nilfs_mdt_restore_from_shadow_map(struct inode *inode); -void nilfs_mdt_clear_shadow_map(struct inode *inode); -int nilfs_mdt_freeze_buffer(struct inode *inode, struct buffer_head *bh); -struct buffer_head *nilfs_mdt_get_frozen_buffer(struct inode *inode, - struct buffer_head *bh); - -static inline void nilfs_mdt_mark_dirty(struct inode *inode) -{ - if (!test_bit(NILFS_I_DIRTY, &NILFS_I(inode)->i_state)) - set_bit(NILFS_I_DIRTY, &NILFS_I(inode)->i_state); -} - -static inline void nilfs_mdt_clear_dirty(struct inode *inode) -{ - clear_bit(NILFS_I_DIRTY, &NILFS_I(inode)->i_state); -} - -static inline __u64 nilfs_mdt_cno(struct inode *inode) -{ - return ((struct the_nilfs *)inode->i_sb->s_fs_info)->ns_cno; -} - -#define nilfs_mdt_bgl_lock(inode, bg) \ - (&NILFS_MDT(inode)->mi_bgl->locks[(bg) & (NR_BG_LOCKS-1)].lock) - -#endif /* _NILFS_MDT_H */ |