/* * 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. * * Written by Ryusuke Konishi. */ #ifndef _NILFS_MDT_H #define _NILFS_MDT_H #include #include #include "nilfs.h" #include "page.h" /** * struct nilfs_shadow_map - shadow mapping of meta data file * @bmap_store: shadow copy of bmap state * @frozen_data: shadowed dirty data pages * @frozen_btnodes: shadowed dirty b-tree nodes' pages * @frozen_buffers: list of frozen buffers */ 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 int mi_entry_size; unsigned int 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; } static inline int nilfs_is_metadata_file_inode(const struct inode *inode) { return inode->i_private != NULL; } /* Default GFP flags using highmem */ #define NILFS_MDT_GFP (__GFP_RECLAIM | __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_find_block(struct inode *inode, unsigned long start, unsigned long end, unsigned long *blkoff, struct buffer_head **out_bh); int nilfs_mdt_delete_block(struct inode *, unsigned long); int nilfs_mdt_forget_block(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_clear(struct inode *inode); void nilfs_mdt_destroy(struct inode *inode); void nilfs_mdt_set_entry_size(struct inode *, unsigned int, unsigned int); 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; } static inline spinlock_t * nilfs_mdt_bgl_lock(struct inode *inode, unsigned int block_group) { return bgl_lock_ptr(NILFS_MDT(inode)->mi_bgl, block_group); } #endif /* _NILFS_MDT_H */ ='8'>8space:mode:
authorDavid S. Miller <davem@davemloft.net>2017-02-07 16:29:30 -0500
committerDavid S. Miller <davem@davemloft.net>2017-02-07 16:29:30 -0500
commit3efa70d78f218e4c9276b0bac0545e5184c1c47b (patch)
treef4abe2f05e173023d2a262afd4aebb1e89fe6985 /tools/thermal/tmon/tmon.h
parent76e0e70e6452b971a69cc9794ff4a6715c11f7f2 (diff)
parent926af6273fc683cd98cd0ce7bf0d04a02eed6742 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
The conflict was an interaction between a bug fix in the netvsc driver in 'net' and an optimization of the RX path in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/thermal/tmon/tmon.h')