* structures etc.
*/
-#include <linux/config.h>
#include <linux/limits.h>
#include <linux/ioctl.h>
#define FIBMAP _IO(0x00,1) /* bmap access */
#define FIGETBSZ _IO(0x00,2) /* get the block size used for bmap */
+#define SYNC_FILE_RANGE_WAIT_BEFORE 1
+#define SYNC_FILE_RANGE_WRITE 2
+#define SYNC_FILE_RANGE_WAIT_AFTER 4
+
#ifdef __KERNEL__
#include <linux/linkage.h>
struct buffer_head;
typedef int (get_block_t)(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create);
-typedef int (get_blocks_t)(struct inode *inode, sector_t iblock,
- unsigned long max_blocks,
- struct buffer_head *bh_result, int create);
typedef void (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
ssize_t bytes, void *private);
struct address_space_operations {
int (*writepage)(struct page *page, struct writeback_control *wbc);
int (*readpage)(struct file *, struct page *);
- int (*sync_page)(struct page *);
+ void (*sync_page)(struct page *);
/* Write back some dirty pages from this mapping. */
int (*writepages)(struct address_space *, struct writeback_control *);
int (*commit_write)(struct file *, struct page *, unsigned, unsigned);
/* Unfortunately this kludge is needed for FIBMAP. Don't use it */
sector_t (*bmap)(struct address_space *, sector_t);
- int (*invalidatepage) (struct page *, unsigned long);
+ void (*invalidatepage) (struct page *, unsigned long);
int (*releasepage) (struct page *, gfp_t);
ssize_t (*direct_IO)(int, struct kiocb *, const struct iovec *iov,
loff_t offset, unsigned long nr_segs);
struct page* (*get_xip_page)(struct address_space *, sector_t,
int);
/* migrate the contents of a page to the specified target */
- int (*migratepage) (struct page *, struct page *);
+ int (*migratepage) (struct address_space *,
+ struct page *, struct page *);
};
struct backing_dev_info;
struct list_head bd_inodes;
void * bd_holder;
int bd_holders;
+#ifdef CONFIG_SYSFS
+ struct list_head bd_holder_list;
+#endif
struct block_device * bd_contains;
unsigned bd_block_size;
struct hd_struct * bd_part;
unsigned int i_blkbits;
unsigned long i_blksize;
unsigned long i_version;
- unsigned long i_blocks;
+ blkcnt_t i_blocks;
unsigned short i_bytes;
spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */
struct mutex i_mutex;
struct rw_semaphore i_alloc_sem;
struct inode_operations *i_op;
- struct file_operations *i_fop; /* former ->i_op->default_file_ops */
+ const struct file_operations *i_fop; /* former ->i_op->default_file_ops */
struct super_block *i_sb;
struct file_lock *i_flock;
struct address_space *i_mapping;
} f_u;
struct dentry *f_dentry;
struct vfsmount *f_vfsmnt;
- struct file_operations *f_op;
+ const struct file_operations *f_op;
atomic_t f_count;
unsigned int f_flags;
mode_t f_mode;
#define FL_POSIX 1
#define FL_FLOCK 2
#define FL_ACCESS 8 /* not trying to lock, just looking */
-#define FL_LOCKD 16 /* lock held by rpc.lockd */
#define FL_LEASE 32 /* lease held on this file */
+#define FL_CLOSE 64 /* unlock on close */
#define FL_SLEEP 128 /* A blocking lock */
/*
#define OFFT_OFFSET_MAX INT_LIMIT(off_t)
#endif
-extern struct list_head file_lock_list;
-
#include <linux/fcntl.h>
extern int fcntl_getlk(struct file *, struct flock __user *);
extern int fcntl_setlease(unsigned int fd, struct file *filp, long arg);
extern int fcntl_getlease(struct file *filp);
+/* fs/sync.c */
+extern int do_sync_file_range(struct file *file, loff_t offset, loff_t endbyte,
+ unsigned int flags);
+
/* fs/locks.c */
extern void locks_init_lock(struct file_lock *);
extern void locks_copy_lock(struct file_lock *, struct file_lock *);
extern void locks_remove_posix(struct file *, fl_owner_t);
extern void locks_remove_flock(struct file *);
-extern struct file_lock *posix_test_lock(struct file *, struct file_lock *);
+extern int posix_test_lock(struct file *, struct file_lock *, struct file_lock *);
+extern int posix_lock_file_conf(struct file *, struct file_lock *, struct file_lock *);
extern int posix_lock_file(struct file *, struct file_lock *);
extern int posix_lock_file_wait(struct file *, struct file_lock *);
-extern void posix_block_lock(struct file_lock *, struct file_lock *);
extern int posix_unblock_lock(struct file *, struct file_lock *);
-extern int posix_locks_deadlock(struct file_lock *, struct file_lock *);
extern int flock_lock_file_wait(struct file *filp, struct file_lock *fl);
extern int __break_lease(struct inode *inode, unsigned int flags);
extern void lease_get_mtime(struct inode *, struct timespec *time);
extern int lease_modify(struct file_lock **, int);
extern int lock_may_read(struct inode *, loff_t start, unsigned long count);
extern int lock_may_write(struct inode *, loff_t start, unsigned long count);
-extern void steal_locks(fl_owner_t from);
struct fasync_struct {
int magic;
*/
struct mutex s_vfs_rename_mutex; /* Kludge */
- /* Granuality of c/m/atime in ns.
+ /* Granularity of c/m/atime in ns.
Cannot be worse than a second */
u32 s_time_gran;
};
long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
int (*mmap) (struct file *, struct vm_area_struct *);
int (*open) (struct inode *, struct file *);
- int (*flush) (struct file *);
+ int (*flush) (struct file *, fl_owner_t id);
int (*release) (struct inode *, struct file *);
int (*fsync) (struct file *, struct dentry *, int datasync);
int (*aio_fsync) (struct kiocb *, int datasync);
int (*check_flags)(int);
int (*dir_notify)(struct file *filp, unsigned long arg);
int (*flock) (struct file *, int, struct file_lock *);
+ ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
+ ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
};
struct inode_operations {
int (*sync_fs)(struct super_block *sb, int wait);
void (*write_super_lockfs) (struct super_block *);
void (*unlockfs) (struct super_block *);
- int (*statfs) (struct super_block *, struct kstatfs *);
+ int (*statfs) (struct dentry *, struct kstatfs *);
int (*remount_fs) (struct super_block *, int *, char *);
void (*clear_inode) (struct inode *);
- void (*umount_begin) (struct super_block *);
+ void (*umount_begin) (struct vfsmount *, int);
int (*show_options)(struct seq_file *, struct vfsmount *);
+ int (*show_stats)(struct seq_file *, struct vfsmount *);
ssize_t (*quota_read)(struct super_block *, int, char *, size_t, loff_t);
ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t);
struct file_system_type {
const char *name;
int fs_flags;
- struct super_block *(*get_sb) (struct file_system_type *, int,
- const char *, void *);
+ int (*get_sb) (struct file_system_type *, int,
+ const char *, void *, struct vfsmount *);
void (*kill_sb) (struct super_block *);
struct module *owner;
struct file_system_type * next;
struct list_head fs_supers;
};
-struct super_block *get_sb_bdev(struct file_system_type *fs_type,
+extern int get_sb_bdev(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data,
- int (*fill_super)(struct super_block *, void *, int));
-struct super_block *get_sb_single(struct file_system_type *fs_type,
+ int (*fill_super)(struct super_block *, void *, int),
+ struct vfsmount *mnt);
+extern int get_sb_single(struct file_system_type *fs_type,
int flags, void *data,
- int (*fill_super)(struct super_block *, void *, int));
-struct super_block *get_sb_nodev(struct file_system_type *fs_type,
+ int (*fill_super)(struct super_block *, void *, int),
+ struct vfsmount *mnt);
+extern int get_sb_nodev(struct file_system_type *fs_type,
int flags, void *data,
- int (*fill_super)(struct super_block *, void *, int));
+ int (*fill_super)(struct super_block *, void *, int),
+ struct vfsmount *mnt);
void generic_shutdown_super(struct super_block *sb);
void kill_block_super(struct super_block *sb);
void kill_anon_super(struct super_block *sb);
int (*test)(struct super_block *,void *),
int (*set)(struct super_block *,void *),
void *data);
-struct super_block *get_sb_pseudo(struct file_system_type *, char *,
- struct super_operations *ops, unsigned long);
+extern int get_sb_pseudo(struct file_system_type *, char *,
+ struct super_operations *ops, unsigned long,
+ struct vfsmount *mnt);
+extern int simple_set_mnt(struct vfsmount *mnt, struct super_block *sb);
int __put_super(struct super_block *sb);
int __put_super_and_need_restart(struct super_block *sb);
void unnamed_dev_init(void);
extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
struct vfsmount *);
-extern int vfs_statfs(struct super_block *, struct kstatfs *);
+extern int vfs_statfs(struct dentry *, struct kstatfs *);
/* /sys/fs */
extern struct subsystem fs_subsys;
extern void bd_forget(struct inode *inode);
extern void bdput(struct block_device *);
extern struct block_device *open_by_devnum(dev_t, unsigned);
-extern struct file_operations def_blk_fops;
+extern const struct file_operations def_blk_fops;
extern struct address_space_operations def_blk_aops;
-extern struct file_operations def_chr_fops;
-extern struct file_operations bad_sock_fops;
-extern struct file_operations def_fifo_fops;
+extern const struct file_operations def_chr_fops;
+extern const struct file_operations bad_sock_fops;
+extern const struct file_operations def_fifo_fops;
extern int ioctl_by_bdev(struct block_device *, unsigned, unsigned long);
extern int blkdev_ioctl(struct inode *, struct file *, unsigned, unsigned long);
extern long compat_blkdev_ioctl(struct file *, unsigned, unsigned long);
extern int blkdev_put(struct block_device *);
extern int bd_claim(struct block_device *, void *);
extern void bd_release(struct block_device *);
+#ifdef CONFIG_SYSFS
+extern int bd_claim_by_disk(struct block_device *, void *, struct gendisk *);
+extern void bd_release_from_disk(struct block_device *, struct gendisk *);
+#else
+#define bd_claim_by_disk(bdev, holder, disk) bd_claim(bdev, holder)
+#define bd_release_from_disk(bdev, disk) bd_release(bdev)
+#endif
/* fs/char_dev.c */
+#define CHRDEV_MAJOR_HASH_SIZE 255
extern int alloc_chrdev_region(dev_t *, unsigned, unsigned, const char *);
extern int register_chrdev_region(dev_t, unsigned, const char *);
extern int register_chrdev(unsigned int, const char *,
- struct file_operations *);
+ const struct file_operations *);
extern int unregister_chrdev(unsigned int, const char *);
extern void unregister_chrdev_region(dev_t, unsigned);
extern int chrdev_open(struct inode *, struct file *);
-extern int get_chrdev_list(char *);
-extern void *acquire_chrdev_list(void);
-extern int count_chrdev_list(void);
-extern void *get_next_chrdev(void *);
-extern int get_chrdev_info(void *, int *, char **);
-extern void release_chrdev_list(void *);
+extern void chrdev_show(struct seq_file *,off_t);
/* fs/block_dev.c */
+#define BLKDEV_MAJOR_HASH_SIZE 255
#define BDEVNAME_SIZE 32 /* Largest string for a blockdev identifier */
extern const char *__bdevname(dev_t, char *buffer);
extern const char *bdevname(struct block_device *bdev, char *buffer);
extern struct block_device *lookup_bdev(const char *);
extern struct block_device *open_bdev_excl(const char *, int, void *);
extern void close_bdev_excl(struct block_device *);
-extern void *acquire_blkdev_list(void);
-extern int count_blkdev_list(void);
-extern void *get_next_blkdev(void *);
-extern int get_blkdev_info(void *, int *, char **);
-extern void release_blkdev_list(void *);
+extern void blkdev_show(struct seq_file *,off_t);
extern void init_special_inode(struct inode *, umode_t, dev_t);
extern void make_bad_inode(struct inode *);
extern int is_bad_inode(struct inode *);
-extern struct file_operations read_fifo_fops;
-extern struct file_operations write_fifo_fops;
-extern struct file_operations rdwr_fifo_fops;
+extern const struct file_operations read_fifo_fops;
+extern const struct file_operations write_fifo_fops;
+extern const struct file_operations rdwr_fifo_fops;
extern int fs_may_remount_ro(struct super_block *);
extern void do_generic_mapping_read(struct address_space *mapping,
struct file_ra_state *, struct file *,
loff_t *, read_descriptor_t *, read_actor_t);
+
+/* fs/splice.c */
+extern ssize_t generic_file_splice_read(struct file *, loff_t *,
+ struct pipe_inode_info *, size_t, unsigned int);
+extern ssize_t generic_file_splice_write(struct pipe_inode_info *,
+ struct file *, loff_t *, size_t, unsigned int);
+extern ssize_t generic_splice_sendpage(struct pipe_inode_info *pipe,
+ struct file *out, loff_t *, size_t len, unsigned int flags);
+extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
+ size_t len, unsigned int flags);
+
extern void
file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);
extern ssize_t generic_file_readv(struct file *filp, const struct iovec *iov,
ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
struct block_device *bdev, const struct iovec *iov, loff_t offset,
- unsigned long nr_segs, get_blocks_t get_blocks, dio_iodone_t end_io,
+ unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
int lock_type);
enum {
static inline ssize_t blockdev_direct_IO(int rw, struct kiocb *iocb,
struct inode *inode, struct block_device *bdev, const struct iovec *iov,
- loff_t offset, unsigned long nr_segs, get_blocks_t get_blocks,
+ loff_t offset, unsigned long nr_segs, get_block_t get_block,
dio_iodone_t end_io)
{
return __blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset,
- nr_segs, get_blocks, end_io, DIO_LOCKING);
+ nr_segs, get_block, end_io, DIO_LOCKING);
}
static inline ssize_t blockdev_direct_IO_no_locking(int rw, struct kiocb *iocb,
struct inode *inode, struct block_device *bdev, const struct iovec *iov,
- loff_t offset, unsigned long nr_segs, get_blocks_t get_blocks,
+ loff_t offset, unsigned long nr_segs, get_block_t get_block,
dio_iodone_t end_io)
{
return __blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset,
- nr_segs, get_blocks, end_io, DIO_NO_LOCKING);
+ nr_segs, get_block, end_io, DIO_NO_LOCKING);
}
static inline ssize_t blockdev_direct_IO_own_locking(int rw, struct kiocb *iocb,
struct inode *inode, struct block_device *bdev, const struct iovec *iov,
- loff_t offset, unsigned long nr_segs, get_blocks_t get_blocks,
+ loff_t offset, unsigned long nr_segs, get_block_t get_block,
dio_iodone_t end_io)
{
return __blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset,
- nr_segs, get_blocks, end_io, DIO_OWN_LOCKING);
+ nr_segs, get_block, end_io, DIO_OWN_LOCKING);
}
-extern struct file_operations generic_ro_fops;
+extern const struct file_operations generic_ro_fops;
#define special_file(m) (S_ISCHR(m)||S_ISBLK(m)||S_ISFIFO(m)||S_ISSOCK(m))
extern loff_t dcache_dir_lseek(struct file *, loff_t, int);
extern int dcache_readdir(struct file *, void *, filldir_t);
extern int simple_getattr(struct vfsmount *, struct dentry *, struct kstat *);
-extern int simple_statfs(struct super_block *, struct kstatfs *);
+extern int simple_statfs(struct dentry *, struct kstatfs *);
extern int simple_link(struct dentry *, struct inode *, struct dentry *);
extern int simple_unlink(struct inode *, struct dentry *);
extern int simple_rmdir(struct inode *, struct dentry *);
extern struct dentry *simple_lookup(struct inode *, struct dentry *, struct nameidata *);
extern ssize_t generic_read_dir(struct file *, char __user *, size_t, loff_t *);
-extern struct file_operations simple_dir_operations;
+extern const struct file_operations simple_dir_operations;
extern struct inode_operations simple_dir_inode_operations;
-struct tree_descr { char *name; struct file_operations *ops; int mode; };
+struct tree_descr { char *name; const struct file_operations *ops; int mode; };
struct dentry *d_alloc_name(struct dentry *, const char *);
extern int simple_fill_super(struct super_block *, int, struct tree_descr *);
-extern int simple_pin_fs(char *name, struct vfsmount **mount, int *count);
+extern int simple_pin_fs(struct file_system_type *, struct vfsmount **mount, int *count);
extern void simple_release_fs(struct vfsmount **mount, int *count);
extern ssize_t simple_read_from_buffer(void __user *, size_t, loff_t *, const void *, size_t);
#ifdef CONFIG_MIGRATION
-extern int buffer_migrate_page(struct page *, struct page *);
+extern int buffer_migrate_page(struct address_space *,
+ struct page *, struct page *);
#else
#define buffer_migrate_page NULL
#endif