229 	struct file	*ia_file;
309 	struct file		*ki_filp;
353 	int (*readpage)(struct file *, struct page *);
365 	int (*readpages)(struct file *filp, struct address_space *mapping,
368 	int (*write_begin)(struct file *, struct address_space *mapping,
371 	int (*write_end)(struct file *, struct address_space *mapping,
396 	int (*swap_activate)(struct swap_info_struct *sis, struct file *file,
398 	void (*swap_deactivate)(struct file *file);
407 int pagecache_write_begin(struct file *, struct address_space *mapping,
411 int pagecache_write_end(struct file *, struct address_space *mapping,
892 struct file {  struct
940 static inline struct file *get_file(struct file *f)  in get_file()
1050 	struct file *fl_file;
1090 extern int fcntl_getlk(struct file *, unsigned int, struct flock *);
1091 extern int fcntl_setlk(unsigned int, struct file *, unsigned int,
1095 extern int fcntl_getlk64(struct file *, unsigned int, struct flock64 *);
1096 extern int fcntl_setlk64(unsigned int, struct file *, unsigned int,
1100 extern int fcntl_setlease(unsigned int fd, struct file *filp, long arg);
1101 extern int fcntl_getlease(struct file *filp);
1110 extern void locks_remove_posix(struct file *, fl_owner_t);
1111 extern void locks_remove_file(struct file *);
1113 extern void posix_test_lock(struct file *, struct file_lock *);
1114 extern int posix_lock_file(struct file *, struct file_lock *, struct file_lock *);
1116 extern int vfs_test_lock(struct file *, struct file_lock *);
1117 extern int vfs_lock_file(struct file *, unsigned int, struct file_lock *, struct file_lock *);
1118 extern int vfs_cancel_lock(struct file *filp, struct file_lock *fl);
1122 extern int generic_setlease(struct file *, long, struct file_lock **, void **priv);
1123 extern int vfs_setlease(struct file *, long, struct file_lock **, void **);
1127 			 struct file *filp, struct files_struct *files);
1129 static inline int fcntl_getlk(struct file *file, unsigned int cmd,  in fcntl_getlk()  argument
1135 static inline int fcntl_setlk(unsigned int fd, struct file *file,  in fcntl_setlk()  argument
1142 static inline int fcntl_getlk64(struct file *file, unsigned int cmd,  in fcntl_getlk64()  argument
1148 static inline int fcntl_setlk64(unsigned int fd, struct file *file,  in fcntl_setlk64()  argument
1154 static inline int fcntl_setlease(unsigned int fd, struct file *filp, long arg)  in fcntl_setlease()
1159 static inline int fcntl_getlease(struct file *filp)  in fcntl_getlease()
1184 static inline void locks_remove_posix(struct file *filp, fl_owner_t owner)  in locks_remove_posix()
1189 static inline void locks_remove_file(struct file *filp)  in locks_remove_file()
1194 static inline void posix_test_lock(struct file *filp, struct file_lock *fl)  in posix_test_lock()
1199 static inline int posix_lock_file(struct file *filp, struct file_lock *fl,  in posix_lock_file()
1210 static inline int vfs_test_lock(struct file *filp, struct file_lock *fl)  in vfs_test_lock()
1215 static inline int vfs_lock_file(struct file *filp, unsigned int cmd,  in vfs_lock_file()
1221 static inline int vfs_cancel_lock(struct file *filp, struct file_lock *fl)  in vfs_cancel_lock()
1242 static inline int generic_setlease(struct file *filp, long arg,  in generic_setlease()
1248 static inline int vfs_setlease(struct file *filp, long arg,  in vfs_setlease()
1262 			struct file *filp, struct files_struct *files) {}  in show_fd_locks()
1265 static inline struct inode *file_inode(const struct file *f)  in file_inode()
1270 static inline struct dentry *file_dentry(const struct file *file)  in file_dentry()  argument
1272 	return d_real(file->f_path.dentry, file_inode(file));  in file_dentry()
1275 static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl)  in locks_lock_file_wait()
1285 	struct file		*fa_file;
1292 extern int fasync_helper(int, struct file *, int, struct fasync_struct **);
1293 extern struct fasync_struct *fasync_insert_entry(int, struct file *, struct fasync_struct **, struc…
1294 extern int fasync_remove_entry(struct file *, struct fasync_struct **);
1301 extern void __f_setown(struct file *filp, struct pid *, enum pid_type, int force);
1302 extern int f_setown(struct file *filp, unsigned long arg, int force);
1303 extern void f_delown(struct file *filp);
1304 extern pid_t f_getown(struct file *filp);
1659 extern long vfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
1744 	loff_t (*llseek) (struct file *, loff_t, int);
1745 	ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
1746 	ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
1749 	int (*iterate) (struct file *, struct dir_context *);
1750 	int (*iterate_shared) (struct file *, struct dir_context *);
1751 	__poll_t (*poll) (struct file *, struct poll_table_struct *);
1752 	long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
1753 	long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
1754 	int (*mmap) (struct file *, struct vm_area_struct *);
1756 	int (*open) (struct inode *, struct file *);
1757 	int (*flush) (struct file *, fl_owner_t id);
1758 	int (*release) (struct inode *, struct file *);
1759 	int (*fsync) (struct file *, loff_t, loff_t, int datasync);
1760 	int (*fasync) (int, struct file *, int);
1761 	int (*lock) (struct file *, int, struct file_lock *);
1762 	ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);
1763 …unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, uns…
1765 	int (*flock) (struct file *, int, struct file_lock *);
1766 	ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
1767 	ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
1768 	int (*setlease)(struct file *, long, struct file_lock **, void **);
1769 	long (*fallocate)(struct file *file, int mode, loff_t offset,
1771 	void (*show_fdinfo)(struct seq_file *m, struct file *f);
1773 	unsigned (*mmap_capabilities)(struct file *);
1775 	ssize_t (*copy_file_range)(struct file *, loff_t, struct file *,
1777 	int (*clone_file_range)(struct file *, loff_t, struct file *, loff_t,
1779 	int (*dedupe_file_range)(struct file *, loff_t, struct file *, loff_t,
1781 	int (*fadvise)(struct file *, loff_t, loff_t, int);
1808 			   struct file *, unsigned open_flag,
1814 static inline ssize_t call_read_iter(struct file *file, struct kiocb *kio,  in call_read_iter()  argument
1817 	return file->f_op->read_iter(kio, iter);  in call_read_iter()
1820 static inline ssize_t call_write_iter(struct file *file, struct kiocb *kio,  in call_write_iter()  argument
1823 	return file->f_op->write_iter(kio, iter);  in call_write_iter()
1826 static inline int call_mmap(struct file *file, struct vm_area_struct *vma)  in call_mmap()  argument
1828 	return file->f_op->mmap(file, vma);  in call_mmap()
1836 extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *);
1837 extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *);
1838 extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *);
1839 extern ssize_t vfs_readv(struct file *, const struct iovec __user *,
1841 extern ssize_t vfs_copy_file_range(struct file *, loff_t , struct file *,
1846 extern int do_clone_file_range(struct file *file_in, loff_t pos_in,
1847 			       struct file *file_out, loff_t pos_out, u64 len);
1848 extern int vfs_clone_file_range(struct file *file_in, loff_t pos_in,
1849 				struct file *file_out, loff_t pos_out, u64 len);
1853 extern int vfs_dedupe_file_range(struct file *file,
1855 extern int vfs_dedupe_file_range_one(struct file *src_file, loff_t src_pos,
1856 				     struct file *dst_file, loff_t dst_pos,
1965 static inline enum rw_hint file_write_hint(struct file *file)  in file_write_hint()  argument
1967 	if (file->f_write_hint != WRITE_LIFE_NOT_SET)  in file_write_hint()
1968 		return file->f_write_hint;  in file_write_hint()
1970 	return file_inode(file)->i_write_hint;  in file_write_hint()
1973 static inline int iocb_flags(struct file *file);
1984 static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp)  in init_sync_kiocb()
2122 static inline void file_accessed(struct file *file)  in file_accessed()  argument
2124 	if (!(file->f_flags & O_NOATIME))  in file_accessed()
2125 		touch_atime(&file->f_path);  in file_accessed()
2231 		struct file *__file = (f); \
2271 extern int locks_mandatory_locked(struct file *);
2272 extern int locks_mandatory_area(struct inode *, struct file *, loff_t, loff_t, unsigned char);
2294 static inline int locks_verify_locked(struct file *file)  in locks_verify_locked()  argument
2296 	if (mandatory_lock(locks_inode(file)))  in locks_verify_locked()
2297 		return locks_mandatory_locked(file);  in locks_verify_locked()
2302 				    struct file *f,  in locks_verify_truncate()
2319 static inline int locks_mandatory_locked(struct file *file)  in locks_mandatory_locked()  argument
2324 static inline int locks_mandatory_area(struct inode *inode, struct file *filp,  in locks_mandatory_area()
2340 static inline int locks_verify_locked(struct file *file)  in locks_verify_locked()  argument
2345 static inline int locks_verify_truncate(struct inode *inode, struct file *filp,  in locks_verify_truncate()
2456 		       struct file *filp);
2457 extern int vfs_fallocate(struct file *file, int mode, loff_t offset,
2461 extern struct file *file_open_name(struct filename *, int, umode_t);
2462 extern struct file *filp_open(const char *, int, umode_t);
2463 extern struct file *file_open_root(struct dentry *, struct vfsmount *,
2465 extern struct file * dentry_open(const struct path *, int, const struct cred *);
2466 extern struct file * open_with_fake_path(const struct path *, int,
2468 static inline struct file *file_clone_open(struct file *file)  in file_clone_open()  argument
2470 	return dentry_open(&file->f_path, file->f_flags, file->f_cred);  in file_clone_open()
2472 extern int filp_close(struct file *, fl_owner_t id);
2479 extern int finish_open(struct file *file, struct dentry *dentry,
2480 			int (*open)(struct inode *, struct file *));
2481 extern int finish_no_open(struct file *file, struct dentry *dentry);
2485 extern int ioctl_preallocate(struct file *filp, void __user *argp);
2557 extern long compat_blkdev_ioctl(struct file *, unsigned, unsigned long);
2680 extern int __must_check file_fdatawait_range(struct file *file, loff_t lstart,
2682 extern int __must_check file_check_and_advance_wb_err(struct file *file);
2683 extern int __must_check file_write_and_wait_range(struct file *file,
2686 static inline int file_write_and_wait(struct file *file)  in file_write_and_wait()  argument
2688 	return file_write_and_wait_range(file, 0, LLONG_MAX);  in file_write_and_wait()
2740 extern int vfs_fsync_range(struct file *file, loff_t start, loff_t end,
2742 extern int vfs_fsync(struct file *file, int datasync);
2777 static inline void file_start_write(struct file *file)  in file_start_write()  argument
2779 	if (!S_ISREG(file_inode(file)->i_mode))  in file_start_write()
2781 	__sb_start_write(file_inode(file)->i_sb, SB_FREEZE_WRITE, true);  in file_start_write()
2784 static inline bool file_start_write_trylock(struct file *file)  in file_start_write_trylock()  argument
2786 	if (!S_ISREG(file_inode(file)->i_mode))  in file_start_write_trylock()
2788 	return __sb_start_write(file_inode(file)->i_sb, SB_FREEZE_WRITE, false);  in file_start_write_trylock()
2791 static inline void file_end_write(struct file *file)  in file_end_write()  argument
2793 	if (!S_ISREG(file_inode(file)->i_mode))  in file_end_write()
2795 	__sb_end_write(file_inode(file)->i_sb, SB_FREEZE_WRITE);  in file_end_write()
2818 static inline int deny_write_access(struct file *file)  in deny_write_access()  argument
2820 	struct inode *inode = file_inode(file);  in deny_write_access()
2827 static inline void allow_write_access(struct file *file)  in allow_write_access()  argument
2829 	if (file)  in allow_write_access()
2830 		atomic_inc(&file_inode(file)->i_writecount);  in allow_write_access()
2889 extern int kernel_read_file(struct file *, void **, loff_t *, loff_t,
2895 extern ssize_t kernel_read(struct file *, void *, size_t, loff_t *);
2896 extern ssize_t kernel_write(struct file *, const void *, size_t, loff_t *);
2897 extern ssize_t __kernel_write(struct file *, const void *, size_t, loff_t *);
2898 extern struct file * open_exec(const char *);
2904 extern char *file_path(struct file *, char *, int);
2909 extern loff_t default_llseek(struct file *file, loff_t offset, int whence);
2911 extern loff_t vfs_llseek(struct file *file, loff_t offset, int whence);
2963 extern int file_remove_privs(struct file *);
2987 extern int generic_file_mmap(struct file *, struct vm_area_struct *);
2988 extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *);
2994 extern ssize_t generic_perform_write(struct file *, struct iov_iter *, loff_t);
2996 ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos,
2998 ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos,
3004 extern int blkdev_fsync(struct file *filp, loff_t start, loff_t end,
3009 extern ssize_t generic_file_splice_read(struct file *, loff_t *,
3012 		struct file *, loff_t *, size_t, unsigned int);
3014 		struct file *out, loff_t *, size_t len, unsigned int flags);
3015 extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
3021 extern loff_t noop_llseek(struct file *file, loff_t offset, int whence);
3022 extern loff_t no_llseek(struct file *file, loff_t offset, int whence);
3023 extern loff_t vfs_setpos(struct file *file, loff_t offset, loff_t maxsize);
3024 extern loff_t generic_file_llseek(struct file *file, loff_t offset, int whence);
3025 extern loff_t generic_file_llseek_size(struct file *file, loff_t offset,
3027 extern loff_t fixed_size_llseek(struct file *file, loff_t offset,
3029 extern loff_t no_seek_end_llseek_size(struct file *, loff_t, int, loff_t);
3030 extern loff_t no_seek_end_llseek(struct file *, loff_t, int);
3031 extern int generic_file_open(struct inode * inode, struct file * filp);
3032 extern int nonseekable_open(struct inode * inode, struct file * filp);
3033 extern int stream_open(struct inode * inode, struct file * filp);
3048 void dio_warn_stale_pagecache(struct file *filp);
3127 extern int iterate_dir(struct file *, struct dir_context *);
3178 extern int dcache_dir_open(struct inode *, struct file *);
3179 extern int dcache_dir_close(struct inode *, struct file *);
3180 extern loff_t dcache_dir_lseek(struct file *, loff_t, int);
3181 extern int dcache_readdir(struct file *, struct dir_context *);
3185 extern int simple_open(struct inode *inode, struct file *file);
3191 extern int noop_fsync(struct file *, loff_t, loff_t, int);
3197 extern int simple_readpage(struct file *file, struct page *page);
3198 extern int simple_write_begin(struct file *file, struct address_space *mapping,
3201 extern int simple_write_end(struct file *file, struct address_space *mapping,
3206 extern int simple_nosetlease(struct file *, long, struct file_lock **, void **);
3210 extern ssize_t generic_read_dir(struct file *, char __user *, size_t, loff_t *);
3227 extern int __generic_file_fsync(struct file *, loff_t, loff_t, int);
3228 extern int generic_file_fsync(struct file *, loff_t, loff_t, int);
3244 extern int file_update_time(struct file *file);
3246 static inline bool io_is_direct(struct file *filp)  in io_is_direct()
3270 static inline int iocb_flags(struct file *file)  in iocb_flags()  argument
3273 	if (file->f_flags & O_APPEND)  in iocb_flags()
3275 	if (io_is_direct(file))  in iocb_flags()
3277 	if ((file->f_flags & O_DSYNC) || IS_SYNC(file->f_mapping->host))  in iocb_flags()
3279 	if (file->f_flags & __O_SYNC)  in iocb_flags()
3332 char *simple_transaction_get(struct file *file, const char __user *buf,
3334 ssize_t simple_transaction_read(struct file *file, char __user *buf,
3336 int simple_transaction_release(struct inode *inode, struct file *file);
3338 void simple_transaction_set(struct file *file, size_t n);
3357 static int __fops ## _open(struct inode *inode, struct file *file)	\
3360 	return simple_attr_open(inode, file, __get, __set, __fmt);	\
3383 int simple_attr_open(struct inode *inode, struct file *file,
3386 int simple_attr_release(struct inode *inode, struct file *file);
3387 ssize_t simple_attr_read(struct file *file, char __user *buf,
3389 ssize_t simple_attr_write(struct file *file, const char __user *buf,
3391 ssize_t simple_attr_write_signed(struct file *file, const char __user *buf,
3440 static inline bool dir_emit_dot(struct file *file, struct dir_context *ctx)  in dir_emit_dot()  argument
3443 			  file->f_path.dentry->d_inode->i_ino, DT_DIR) == 0;  in dir_emit_dot()
3445 static inline bool dir_emit_dotdot(struct file *file, struct dir_context *ctx)  in dir_emit_dotdot()  argument
3448 			  parent_ino(file->f_path.dentry), DT_DIR) == 0;  in dir_emit_dotdot()
3450 static inline bool dir_emit_dots(struct file *file, struct dir_context *ctx)  in dir_emit_dots()  argument
3453 		if (!dir_emit_dot(file, ctx))  in dir_emit_dots()
3458 		if (!dir_emit_dotdot(file, ctx))  in dir_emit_dots()
3482 extern int vfs_fadvise(struct file *file, loff_t offset, loff_t len,