diff options
Diffstat (limited to 'fs/nilfs2/nilfs.h')
| -rw-r--r-- | fs/nilfs2/nilfs.h | 112 |
1 files changed, 77 insertions, 35 deletions
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h index a2f247b6a209..b7e3d91b6243 100644 --- a/fs/nilfs2/nilfs.h +++ b/fs/nilfs2/nilfs.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0+ */ /* - * nilfs.h - NILFS local header file. + * NILFS local header file. * * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. * @@ -14,6 +14,7 @@ #include <linux/buffer_head.h> #include <linux/spinlock.h> #include <linux/blkdev.h> +#include <linux/fs_struct.h> #include <linux/nilfs2_api.h> #include <linux/nilfs2_ondisk.h> #include "the_nilfs.h" @@ -22,13 +23,14 @@ /** * struct nilfs_inode_info - nilfs inode data in memory * @i_flags: inode flags + * @i_type: inode type (combination of flags that inidicate usage) * @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_assoc_inode: associated inode (B-tree node cache holder or back pointer) * @i_dirty: list for connecting dirty files * @xattr_sem: semaphore for extended attributes processing * @i_bh: buffer contains disk inode @@ -37,13 +39,14 @@ */ struct nilfs_inode_info { __u32 i_flags; + unsigned int i_type; unsigned long i_state; /* Dynamic state flags */ struct nilfs_bmap *i_bmap; 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 */ - struct address_space i_btnode_cache; + struct inode *i_assoc_inode; struct list_head i_dirty; /* List for connecting dirty files */ #ifdef CONFIG_NILFS_XATTR @@ -75,13 +78,6 @@ NILFS_BMAP_I(const struct nilfs_bmap *bmap) return container_of(bmap, struct nilfs_inode_info, i_bmap_data); } -static inline struct inode *NILFS_BTNC_I(struct address_space *btnc) -{ - struct nilfs_inode_info *ii = - container_of(btnc, struct nilfs_inode_info, i_btnode_cache); - return &ii->vfs_inode; -} - /* * Dynamic state flags of NILFS on-memory inode (i_state) */ @@ -97,7 +93,16 @@ enum { NILFS_I_UPDATED, /* The file has been written back */ NILFS_I_INODE_SYNC, /* dsync is not allowed for inode */ NILFS_I_BMAP, /* has bmap and btnode_cache */ - NILFS_I_GCINODE, /* inode for GC, on memory only */ +}; + +/* + * Flags to identify the usage of on-memory inodes (i_type) + */ +enum { + NILFS_I_TYPE_NORMAL = 0, + NILFS_I_TYPE_GC = 0x0001, /* For data caching during GC */ + NILFS_I_TYPE_BTNC = 0x0002, /* For btree node cache */ + NILFS_I_TYPE_SHADOW = 0x0004, /* For shadowed page cache */ }; /* @@ -108,6 +113,18 @@ enum { NILFS_SB_COMMIT_ALL /* Commit both super blocks */ }; +/** + * define NILFS_MAX_VOLUME_NAME - maximum number of characters (bytes) in a + * file system volume name + * + * Defined by the size of the volume name field in the on-disk superblocks. + * This volume name does not include the terminating NULL byte if the string + * length matches the field size, so use (NILFS_MAX_VOLUME_NAME + 1) for the + * size of the buffer that requires a NULL byte termination. + */ +#define NILFS_MAX_VOLUME_NAME \ + sizeof_field(struct nilfs_super_block, s_volume_name) + /* * Macros to check inode numbers */ @@ -121,9 +138,15 @@ enum { #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 & BIT(ino))) + ((ino) < NILFS_USER_INO && (NILFS_MDT_INO_BITS & BIT(ino))) #define NILFS_VALID_INODE(sb, ino) \ - ((ino) >= NILFS_FIRST_INO(sb) || (NILFS_SYS_INO_BITS & BIT(ino))) + ((ino) >= NILFS_FIRST_INO(sb) || \ + ((ino) < NILFS_USER_INO && (NILFS_SYS_INO_BITS & BIT(ino)))) + +#define NILFS_PRIVATE_INODE(ino) ({ \ + ino_t __ino = (ino); \ + ((__ino) < NILFS_USER_INO && (__ino) != NILFS_ROOT_INO && \ + (__ino) != NILFS_SKETCH_INO); }) /** * struct nilfs_transaction_info: context information for synchronization @@ -203,6 +226,9 @@ static inline int nilfs_acl_chmod(struct inode *inode) static inline int nilfs_init_acl(struct inode *inode, struct inode *dir) { + if (S_ISLNK(inode->i_mode)) + return 0; + inode->i_mode &= ~current_umask(); return 0; } @@ -228,21 +254,24 @@ static inline __u32 nilfs_mask_flags(umode_t mode, __u32 flags) } /* dir.c */ -extern int nilfs_add_link(struct dentry *, struct inode *); -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 *, 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 **); -extern void nilfs_set_link(struct inode *, struct nilfs_dir_entry *, - struct page *, struct inode *); +int nilfs_add_link(struct dentry *, struct inode *); +int nilfs_inode_by_name(struct inode *dir, const struct qstr *qstr, ino_t *ino); +int nilfs_make_empty(struct inode *, struct inode *); +struct nilfs_dir_entry *nilfs_find_entry(struct inode *, const struct qstr *, + struct folio **); +int nilfs_delete_entry(struct nilfs_dir_entry *, struct folio *); +int nilfs_empty_dir(struct inode *); +struct nilfs_dir_entry *nilfs_dotdot(struct inode *, struct folio **); +int nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de, + struct folio *folio, struct inode *inode); /* file.c */ extern int nilfs_sync_file(struct file *, loff_t, loff_t, int); /* ioctl.c */ +int nilfs_fileattr_get(struct dentry *dentry, struct file_kattr *m); +int nilfs_fileattr_set(struct mnt_idmap *idmap, + struct dentry *dentry, struct file_kattr *fa); 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 *, @@ -252,11 +281,11 @@ int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *, struct nilfs_argv *, 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); +void nilfs_write_inode_common(struct inode *inode, + struct nilfs_inode *raw_inode); 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, @@ -265,12 +294,17 @@ 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); +int nilfs_attach_btree_node_cache(struct inode *inode); +void nilfs_detach_btree_node_cache(struct inode *inode); +struct inode *nilfs_iget_for_shadow(struct inode *inode); extern void nilfs_update_inode(struct inode *, struct buffer_head *, int); extern void nilfs_truncate(struct inode *); extern void nilfs_evict_inode(struct inode *); -extern int nilfs_setattr(struct dentry *, struct iattr *); +extern int nilfs_setattr(struct mnt_idmap *, struct dentry *, + struct iattr *); extern void nilfs_write_failed(struct address_space *mapping, loff_t to); -int nilfs_permission(struct inode *inode, int mask); +int nilfs_permission(struct mnt_idmap *idmap, struct inode *inode, + int mask); int nilfs_load_inode_block(struct inode *inode, struct buffer_head **pbh); extern int nilfs_inode_dirty(struct inode *); int nilfs_set_file_dirty(struct inode *inode, unsigned int nr_dirty); @@ -289,11 +323,9 @@ static inline int nilfs_mark_inode_dirty_sync(struct inode *inode) /* super.c */ extern struct inode *nilfs_alloc_inode(struct super_block *); -extern void nilfs_destroy_inode(struct inode *); -extern __printf(3, 4) -void __nilfs_msg(struct super_block *sb, const char *level, - const char *fmt, ...); +__printf(2, 3) +void __nilfs_msg(struct super_block *sb, const char *fmt, ...); extern __printf(3, 4) void __nilfs_error(struct super_block *sb, const char *function, const char *fmt, ...); @@ -301,7 +333,7 @@ void __nilfs_error(struct super_block *sb, const char *function, #ifdef CONFIG_PRINTK #define nilfs_msg(sb, level, fmt, ...) \ - __nilfs_msg(sb, level, fmt, ##__VA_ARGS__) + __nilfs_msg(sb, level fmt, ##__VA_ARGS__) #define nilfs_error(sb, fmt, ...) \ __nilfs_error(sb, __func__, fmt, ##__VA_ARGS__) @@ -309,7 +341,7 @@ void __nilfs_error(struct super_block *sb, const char *function, #define nilfs_msg(sb, level, fmt, ...) \ do { \ - no_printk(fmt, ##__VA_ARGS__); \ + no_printk(level fmt, ##__VA_ARGS__); \ (void)(sb); \ } while (0) #define nilfs_error(sb, fmt, ...) \ @@ -320,10 +352,19 @@ void __nilfs_error(struct super_block *sb, const char *function, #endif /* CONFIG_PRINTK */ +#define nilfs_crit(sb, fmt, ...) \ + nilfs_msg(sb, KERN_CRIT, fmt, ##__VA_ARGS__) +#define nilfs_err(sb, fmt, ...) \ + nilfs_msg(sb, KERN_ERR, fmt, ##__VA_ARGS__) +#define nilfs_warn(sb, fmt, ...) \ + nilfs_msg(sb, KERN_WARNING, fmt, ##__VA_ARGS__) +#define nilfs_info(sb, fmt, ...) \ + nilfs_msg(sb, KERN_INFO, fmt, ##__VA_ARGS__) + 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_store_magic(struct super_block *sb, + struct nilfs_super_block *sbp); extern int nilfs_check_feature_compatibility(struct super_block *, struct nilfs_super_block *); extern void nilfs_set_log_cursor(struct nilfs_super_block *, @@ -361,6 +402,7 @@ 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 address_space_operations nilfs_buffer_cache_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; |