diff options
Diffstat (limited to 'fs/nilfs2/nilfs.h')
| -rw-r--r-- | fs/nilfs2/nilfs.h | 170 |
1 files changed, 98 insertions, 72 deletions
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h index da6fc0bba2e..9bc72dec3fa 100644 --- a/fs/nilfs2/nilfs.h +++ b/fs/nilfs2/nilfs.h @@ -30,18 +30,29 @@ #include <linux/blkdev.h> #include <linux/nilfs2_fs.h> #include "the_nilfs.h" -#include "sb.h" #include "bmap.h" -#include "bmap_union.h" -/* - * nilfs inode data in memory +/** + * struct nilfs_inode_info - nilfs inode data in memory + * @i_flags: inode flags + * @i_state: dynamic state flags + * @i_bmap: pointer on i_bmap_data + * @i_bmap_data: raw block mapping + * @i_xattr: <TODO> + * @i_dir_start_lookup: page index of last successful search + * @i_cno: checkpoint number for GC inode + * @i_btnode_cache: cached pages of b-tree nodes + * @i_dirty: list for connecting dirty files + * @xattr_sem: semaphore for extended attributes processing + * @i_bh: buffer contains disk inode + * @i_root: root object of the current filesystem tree + * @vfs_inode: VFS inode object */ struct nilfs_inode_info { __u32 i_flags; unsigned long i_state; /* Dynamic state flags */ struct nilfs_bmap *i_bmap; - union nilfs_bmap_union i_bmap_union; + struct nilfs_bmap i_bmap_data; __u64 i_xattr; /* sector_t ??? */ __u32 i_dir_start_lookup; __u64 i_cno; /* check point number for GC inode */ @@ -58,12 +69,9 @@ struct nilfs_inode_info { */ struct rw_semaphore xattr_sem; #endif -#ifdef CONFIG_NILFS_POSIX_ACL - struct posix_acl *i_acl; - struct posix_acl *i_default_acl; -#endif struct buffer_head *i_bh; /* i_bh contains a new or dirty disk inode */ + struct nilfs_root *i_root; struct inode vfs_inode; }; @@ -75,9 +83,7 @@ static inline struct nilfs_inode_info *NILFS_I(const struct inode *inode) static inline struct nilfs_inode_info * NILFS_BMAP_I(const struct nilfs_bmap *bmap) { - return container_of((union nilfs_bmap_union *)bmap, - struct nilfs_inode_info, - i_bmap_union); + return container_of(bmap, struct nilfs_inode_info, i_bmap_data); } static inline struct inode *NILFS_BTNC_I(struct address_space *btnc) @@ -87,12 +93,6 @@ static inline struct inode *NILFS_BTNC_I(struct address_space *btnc) return &ii->vfs_inode; } -static inline struct inode *NILFS_AS_I(struct address_space *mapping) -{ - return (mapping->host) ? : - container_of(mapping, struct inode, i_data); -} - /* * Dynamic state flags of NILFS on-memory inode (i_state) */ @@ -107,26 +107,33 @@ enum { NILFS_I_INODE_DIRTY, /* write_inode is requested */ NILFS_I_BMAP, /* has bmap and btnode_cache */ NILFS_I_GCINODE, /* inode for GC, on memory only */ - NILFS_I_GCDAT, /* shadow DAT, on memory only */ +}; + +/* + * commit flags for nilfs_commit_super and nilfs_sync_super + */ +enum { + NILFS_SB_COMMIT = 0, /* Commit a super block alternately */ + NILFS_SB_COMMIT_ALL /* Commit both super blocks */ }; /* * Macros to check inode numbers */ #define NILFS_MDT_INO_BITS \ - ((unsigned int)(1 << NILFS_DAT_INO | 1 << NILFS_CPFILE_INO | \ - 1 << NILFS_SUFILE_INO | 1 << NILFS_IFILE_INO | \ - 1 << NILFS_ATIME_INO | 1 << NILFS_SKETCH_INO)) + ((unsigned int)(1 << NILFS_DAT_INO | 1 << NILFS_CPFILE_INO | \ + 1 << NILFS_SUFILE_INO | 1 << NILFS_IFILE_INO | \ + 1 << NILFS_ATIME_INO | 1 << NILFS_SKETCH_INO)) #define NILFS_SYS_INO_BITS \ - ((unsigned int)(1 << NILFS_ROOT_INO) | NILFS_MDT_INO_BITS) + ((unsigned int)(1 << NILFS_ROOT_INO) | NILFS_MDT_INO_BITS) -#define NILFS_FIRST_INO(sb) (NILFS_SB(sb)->s_nilfs->ns_first_ino) +#define NILFS_FIRST_INO(sb) (((struct the_nilfs *)sb->s_fs_info)->ns_first_ino) #define NILFS_MDT_INODE(sb, ino) \ - ((ino) < NILFS_FIRST_INO(sb) && (NILFS_MDT_INO_BITS & (1 << (ino)))) + ((ino) < NILFS_FIRST_INO(sb) && (NILFS_MDT_INO_BITS & (1 << (ino)))) #define NILFS_VALID_INODE(sb, ino) \ - ((ino) >= NILFS_FIRST_INO(sb) || (NILFS_SYS_INO_BITS & (1 << (ino)))) + ((ino) >= NILFS_FIRST_INO(sb) || (NILFS_SYS_INO_BITS & (1 << (ino)))) /** * struct nilfs_transaction_info: context information for synchronization @@ -189,22 +196,14 @@ static inline int nilfs_doing_construction(void) return nilfs_test_transaction_flag(NILFS_TI_WRITER); } -static inline struct inode *nilfs_dat_inode(const struct the_nilfs *nilfs) -{ - return nilfs_doing_gc() ? nilfs->ns_gc_dat : nilfs->ns_dat; -} - /* * function prototype */ #ifdef CONFIG_NILFS_POSIX_ACL #error "NILFS: not yet supported POSIX ACL" -extern int nilfs_permission(struct inode *, int, struct nameidata *); extern int nilfs_acl_chmod(struct inode *); extern int nilfs_init_acl(struct inode *, struct inode *); #else -#define nilfs_permission NULL - static inline int nilfs_acl_chmod(struct inode *inode) { return 0; @@ -219,12 +218,29 @@ static inline int nilfs_init_acl(struct inode *inode, struct inode *dir) #define NILFS_ATIME_DISABLE +/* Flags that should be inherited by new inodes from their parent. */ +#define NILFS_FL_INHERITED \ + (FS_SECRM_FL | FS_UNRM_FL | FS_COMPR_FL | FS_SYNC_FL | \ + FS_IMMUTABLE_FL | FS_APPEND_FL | FS_NODUMP_FL | FS_NOATIME_FL |\ + FS_COMPRBLK_FL | FS_NOCOMP_FL | FS_NOTAIL_FL | FS_DIRSYNC_FL) + +/* Mask out flags that are inappropriate for the given type of inode. */ +static inline __u32 nilfs_mask_flags(umode_t mode, __u32 flags) +{ + if (S_ISDIR(mode)) + return flags; + else if (S_ISREG(mode)) + return flags & ~(FS_DIRSYNC_FL | FS_TOPDIR_FL); + else + return flags & (FS_NODUMP_FL | FS_NOATIME_FL); +} + /* dir.c */ extern int nilfs_add_link(struct dentry *, struct inode *); -extern ino_t nilfs_inode_by_name(struct inode *, struct dentry *); +extern ino_t nilfs_inode_by_name(struct inode *, const struct qstr *); extern int nilfs_make_empty(struct inode *, struct inode *); extern struct nilfs_dir_entry * -nilfs_find_entry(struct inode *, struct dentry *, struct page **); +nilfs_find_entry(struct inode *, const struct qstr *, struct page **); extern int nilfs_delete_entry(struct nilfs_dir_entry *, struct page *); extern int nilfs_empty_dir(struct inode *); extern struct nilfs_dir_entry *nilfs_dotdot(struct inode *, struct page **); @@ -232,50 +248,68 @@ extern void nilfs_set_link(struct inode *, struct nilfs_dir_entry *, struct page *, struct inode *); /* file.c */ -extern int nilfs_sync_file(struct file *, struct dentry *, int); +extern int nilfs_sync_file(struct file *, loff_t, loff_t, int); /* ioctl.c */ long nilfs_ioctl(struct file *, unsigned int, unsigned long); +long nilfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *, struct nilfs_argv *, void **); /* inode.c */ -extern struct inode *nilfs_new_inode(struct inode *, int); +void nilfs_inode_add_blocks(struct inode *inode, int n); +void nilfs_inode_sub_blocks(struct inode *inode, int n); +extern struct inode *nilfs_new_inode(struct inode *, umode_t); extern void nilfs_free_inode(struct inode *); extern int nilfs_get_block(struct inode *, sector_t, struct buffer_head *, int); extern void nilfs_set_inode_flags(struct inode *); extern int nilfs_read_inode_common(struct inode *, struct nilfs_inode *); extern void nilfs_write_inode_common(struct inode *, struct nilfs_inode *, int); -extern struct inode *nilfs_iget(struct super_block *, unsigned long); +struct inode *nilfs_ilookup(struct super_block *sb, struct nilfs_root *root, + unsigned long ino); +struct inode *nilfs_iget_locked(struct super_block *sb, struct nilfs_root *root, + unsigned long ino); +struct inode *nilfs_iget(struct super_block *sb, struct nilfs_root *root, + unsigned long ino); +extern struct inode *nilfs_iget_for_gc(struct super_block *sb, + unsigned long ino, __u64 cno); extern void nilfs_update_inode(struct inode *, struct buffer_head *); extern void nilfs_truncate(struct inode *); -extern void nilfs_delete_inode(struct inode *); +extern void nilfs_evict_inode(struct inode *); extern int nilfs_setattr(struct dentry *, struct iattr *); -extern int nilfs_load_inode_block(struct nilfs_sb_info *, struct inode *, - struct buffer_head **); +extern void nilfs_write_failed(struct address_space *mapping, loff_t to); +int nilfs_permission(struct inode *inode, int mask); +int nilfs_load_inode_block(struct inode *inode, struct buffer_head **pbh); extern int nilfs_inode_dirty(struct inode *); -extern int nilfs_set_file_dirty(struct nilfs_sb_info *, struct inode *, - unsigned); +int nilfs_set_file_dirty(struct inode *inode, unsigned nr_dirty); extern int nilfs_mark_inode_dirty(struct inode *); -extern void nilfs_dirty_inode(struct inode *); - -/* namei.c */ -extern struct dentry *nilfs_get_parent(struct dentry *); +extern void nilfs_dirty_inode(struct inode *, int flags); +int nilfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, + __u64 start, __u64 len); /* super.c */ extern struct inode *nilfs_alloc_inode(struct super_block *); extern void nilfs_destroy_inode(struct inode *); -extern void nilfs_error(struct super_block *, const char *, const char *, ...) - __attribute__ ((format (printf, 3, 4))); -extern void nilfs_warning(struct super_block *, const char *, const char *, ...) - __attribute__ ((format (printf, 3, 4))); +extern __printf(3, 4) +void nilfs_error(struct super_block *, const char *, const char *, ...); +extern __printf(3, 4) +void nilfs_warning(struct super_block *, const char *, const char *, ...); extern struct nilfs_super_block * nilfs_read_super_block(struct super_block *, u64, int, struct buffer_head **); extern int nilfs_store_magic_and_option(struct super_block *, struct nilfs_super_block *, char *); -extern int nilfs_commit_super(struct nilfs_sb_info *, int); -extern int nilfs_attach_checkpoint(struct nilfs_sb_info *, __u64); -extern void nilfs_detach_checkpoint(struct nilfs_sb_info *); +extern int nilfs_check_feature_compatibility(struct super_block *, + struct nilfs_super_block *); +extern void nilfs_set_log_cursor(struct nilfs_super_block *, + struct the_nilfs *); +struct nilfs_super_block **nilfs_prepare_super(struct super_block *sb, + int flip); +int nilfs_commit_super(struct super_block *sb, int flag); +int nilfs_cleanup_super(struct super_block *sb); +int nilfs_resize_fs(struct super_block *sb, __u64 newsize); +int nilfs_attach_checkpoint(struct super_block *sb, __u64 cno, int curr_mnt, + struct nilfs_root **root); +int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno); /* gcinode.c */ int nilfs_gccache_submit_read_data(struct inode *, sector_t, sector_t, __u64, @@ -283,27 +317,19 @@ int nilfs_gccache_submit_read_data(struct inode *, sector_t, sector_t, __u64, int nilfs_gccache_submit_read_node(struct inode *, sector_t, __u64, struct buffer_head **); int nilfs_gccache_wait_and_mark_dirty(struct buffer_head *); -int nilfs_init_gccache(struct the_nilfs *); -void nilfs_destroy_gccache(struct the_nilfs *); -void nilfs_clear_gcinode(struct inode *); -struct inode *nilfs_gc_iget(struct the_nilfs *, ino_t, __u64); -void nilfs_remove_all_gcinode(struct the_nilfs *); - -/* gcdat.c */ -int nilfs_init_gcdat_inode(struct the_nilfs *); -void nilfs_commit_gcdat_inode(struct the_nilfs *); -void nilfs_clear_gcdat_inode(struct the_nilfs *); +int nilfs_init_gcinode(struct inode *inode); +void nilfs_remove_all_gcinodes(struct the_nilfs *nilfs); /* * Inodes and files operations */ -extern struct file_operations nilfs_dir_operations; -extern struct inode_operations nilfs_file_inode_operations; -extern struct file_operations nilfs_file_operations; -extern struct address_space_operations nilfs_aops; -extern struct inode_operations nilfs_dir_inode_operations; -extern struct inode_operations nilfs_special_inode_operations; -extern struct inode_operations nilfs_symlink_inode_operations; +extern const struct file_operations nilfs_dir_operations; +extern const struct inode_operations nilfs_file_inode_operations; +extern const struct file_operations nilfs_file_operations; +extern const struct address_space_operations nilfs_aops; +extern const struct inode_operations nilfs_dir_inode_operations; +extern const struct inode_operations nilfs_special_inode_operations; +extern const struct inode_operations nilfs_symlink_inode_operations; /* * filesystem type |