X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Flinux%2Ffs.h;h=a057f48eb156ca2fb015ddedabd3dbb1da473f1b;hb=f653398c86a1c104f0992bd788dd4bb065449be4;hp=51de83bd8a8738e7d644980feb6de2302c7888f1;hpb=10f303ae1e5e77a9f7cb053e6329906afb132c67;p=safe%2Fjmp%2Flinux-2.6 diff --git a/include/linux/fs.h b/include/linux/fs.h index 51de83b..a057f48 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -87,6 +87,60 @@ struct inodes_stat_t { */ #define FMODE_NOCMTIME ((__force fmode_t)2048) +/* + * The below are the various read and write types that we support. Some of + * them include behavioral modifiers that send information down to the + * block layer and IO scheduler. Terminology: + * + * The block layer uses device plugging to defer IO a little bit, in + * the hope that we will see more IO very shortly. This increases + * coalescing of adjacent IO and thus reduces the number of IOs we + * have to send to the device. It also allows for better queuing, + * if the IO isn't mergeable. If the caller is going to be waiting + * for the IO, then he must ensure that the device is unplugged so + * that the IO is dispatched to the driver. + * + * All IO is handled async in Linux. This is fine for background + * writes, but for reads or writes that someone waits for completion + * on, we want to notify the block layer and IO scheduler so that they + * know about it. That allows them to make better scheduling + * decisions. So when the below references 'sync' and 'async', it + * is referencing this priority hint. + * + * With that in mind, the available types are: + * + * READ A normal read operation. Device will be plugged. + * READ_SYNC A synchronous read. Device is not plugged, caller can + * immediately wait on this read without caring about + * unplugging. + * READA Used for read-ahead operations. Lower priority, and the + * block layer could (in theory) choose to ignore this + * request if it runs into resource problems. + * WRITE A normal async write. Device will be plugged. + * SWRITE Like WRITE, but a special case for ll_rw_block() that + * tells it to lock the buffer first. Normally a buffer + * must be locked before doing IO. + * WRITE_SYNC_PLUG Synchronous write. Identical to WRITE, but passes down + * the hint that someone will be waiting on this IO + * shortly. The device must still be unplugged explicitly, + * WRITE_SYNC_PLUG does not do this as we could be + * submitting more writes before we actually wait on any + * of them. + * WRITE_SYNC Like WRITE_SYNC_PLUG, but also unplugs the device + * immediately after submission. The write equivalent + * of READ_SYNC. + * WRITE_ODIRECT_PLUG Special case write for O_DIRECT only. + * SWRITE_SYNC + * SWRITE_SYNC_PLUG Like WRITE_SYNC/WRITE_SYNC_PLUG, but locks the buffer. + * See SWRITE. + * WRITE_BARRIER Like WRITE, but tells the block layer that all + * previously submitted writes must be safely on storage + * before this one is started. Also guarantees that when + * this write is complete, it itself is also safely on + * storage. Prevents reordering of writes on both sides + * of this IO. + * + */ #define RW_MASK 1 #define RWA_MASK 2 #define READ 0 @@ -95,11 +149,20 @@ struct inodes_stat_t { #define SWRITE 3 /* for ll_rw_block() - wait for buffer lock */ #define READ_SYNC (READ | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG)) #define READ_META (READ | (1 << BIO_RW_META)) -#define WRITE_SYNC (WRITE | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG)) -#define SWRITE_SYNC (SWRITE | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG)) +#define WRITE_SYNC_PLUG (WRITE | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_NOIDLE)) +#define WRITE_SYNC (WRITE_SYNC_PLUG | (1 << BIO_RW_UNPLUG)) +#define WRITE_ODIRECT_PLUG (WRITE | (1 << BIO_RW_SYNCIO)) +#define SWRITE_SYNC_PLUG \ + (SWRITE | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_NOIDLE)) +#define SWRITE_SYNC (SWRITE_SYNC_PLUG | (1 << BIO_RW_UNPLUG)) #define WRITE_BARRIER (WRITE | (1 << BIO_RW_BARRIER)) -#define DISCARD_NOBARRIER (1 << BIO_RW_DISCARD) -#define DISCARD_BARRIER ((1 << BIO_RW_DISCARD) | (1 << BIO_RW_BARRIER)) + +/* + * These aren't really reads or writes, they pass down information about + * parts of device that are now unused by the file system. + */ +#define DISCARD_NOBARRIER (WRITE | (1 << BIO_RW_DISCARD)) +#define DISCARD_BARRIER (DISCARD_NOBARRIER | (1 << BIO_RW_BARRIER)) #define SEL_IN 1 #define SEL_OUT 2 @@ -141,6 +204,7 @@ struct inodes_stat_t { #define MS_RELATIME (1<<21) /* Update atime relative to mtime/ctime. */ #define MS_KERNMOUNT (1<<22) /* this is a kern_mount call */ #define MS_I_VERSION (1<<23) /* Update inode I_version field */ +#define MS_STRICTATIME (1<<24) /* Always perform atime updates */ #define MS_ACTIVE (1<<30) #define MS_NOUSER (1<<31) @@ -236,6 +300,11 @@ struct inodes_stat_t { #define BLKTRACESTOP _IO(0x12,117) #define BLKTRACETEARDOWN _IO(0x12,118) #define BLKDISCARD _IO(0x12,119) +#define BLKIOMIN _IO(0x12,120) +#define BLKIOOPT _IO(0x12,121) +#define BLKALIGNOFF _IO(0x12,122) +#define BLKPBSZGET _IO(0x12,123) +#define BLKDISCARDZEROES _IO(0x12,124) #define BMAP_IOCTL 1 /* obsolete - kept for compatibility */ #define FIBMAP _IO(0x00,1) /* bmap access */ @@ -531,6 +600,7 @@ struct address_space_operations { int (*launder_page) (struct page *); int (*is_partially_uptodate) (struct page *, read_descriptor_t *, unsigned long); + int (*error_remove_page)(struct address_space *, struct page *); }; /* @@ -576,7 +646,6 @@ struct block_device { struct super_block * bd_super; int bd_openers; struct mutex bd_mutex; /* open/close mutex */ - struct semaphore bd_mount_sem; struct list_head bd_inodes; void * bd_holder; int bd_holders; @@ -591,7 +660,6 @@ struct block_device { int bd_invalidated; struct gendisk * bd_disk; struct list_head bd_list; - struct backing_dev_info *bd_inode_backing_dev_info; /* * Private data. You must have bd_claim'ed the block_device * to use this. NOTE: bd_claim allows an owner to claim @@ -646,9 +714,12 @@ static inline int mapping_writably_mapped(struct address_space *mapping) #define i_size_ordered_init(inode) do { } while (0) #endif +struct posix_acl; +#define ACL_NOT_CACHED ((void *)(-1)) + struct inode { struct hlist_node i_hash; - struct list_head i_list; + struct list_head i_list; /* backing dev IO list */ struct list_head i_sb_list; struct list_head i_dentry; unsigned long i_ino; @@ -665,8 +736,8 @@ struct inode { struct timespec i_atime; struct timespec i_mtime; struct timespec i_ctime; - unsigned int i_blkbits; blkcnt_t i_blocks; + unsigned int i_blkbits; unsigned short i_bytes; umode_t i_mode; spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ @@ -687,13 +758,12 @@ struct inode { struct block_device *i_bdev; struct cdev *i_cdev; }; - int i_cindex; __u32 i_generation; -#ifdef CONFIG_DNOTIFY - unsigned long i_dnotify_mask; /* Directory notify events */ - struct dnotify_struct *i_dnotify; /* for directory notifications */ +#ifdef CONFIG_FSNOTIFY + __u32 i_fsnotify_mask; /* all events this inode cares about */ + struct hlist_head i_fsnotify_mark_entries; /* fsnotify mark entries */ #endif #ifdef CONFIG_INOTIFY @@ -710,6 +780,10 @@ struct inode { #ifdef CONFIG_SECURITY void *i_security; #endif +#ifdef CONFIG_FS_POSIX_ACL + struct posix_acl *i_acl; + struct posix_acl *i_default_acl; +#endif void *i_private; /* fs or device private pointer */ }; @@ -733,9 +807,6 @@ enum inode_i_mutex_lock_class I_MUTEX_QUOTA }; -extern void inode_double_lock(struct inode *inode1, struct inode *inode2); -extern void inode_double_unlock(struct inode *inode1, struct inode *inode2); - /* * NOTE: in a 32bit arch with a preemptable kernel and * an UP compile the i_size_read/write must be atomic @@ -819,7 +890,7 @@ struct file_ra_state { there are only # of pages ahead */ unsigned int ra_pages; /* Maximum readahead window */ - int mmap_miss; /* Cache miss stat for mmap accesses */ + unsigned int mmap_miss; /* Cache miss stat for mmap accesses */ loff_t prev_pos; /* Cache last read() position */ }; @@ -848,6 +919,7 @@ struct file { #define f_dentry f_path.dentry #define f_vfsmnt f_path.mnt const struct file_operations *f_op; + spinlock_t f_lock; /* f_ep_links, f_flags, no IRQ */ atomic_long_t f_count; unsigned int f_flags; fmode_t f_mode; @@ -866,7 +938,6 @@ struct file { #ifdef CONFIG_EPOLL /* Used by fs/eventpoll.c to link all the hooks to this file */ struct list_head f_ep_links; - spinlock_t f_ep_lock; #endif /* #ifdef CONFIG_EPOLL */ struct address_space *f_mapping; #ifdef CONFIG_DEBUG_WRITECOUNT @@ -1000,8 +1071,8 @@ struct file_lock { struct fasync_struct * fl_fasync; /* for lease break notifications */ unsigned long fl_break_time; /* for nonblocking lease breaks */ - struct file_lock_operations *fl_ops; /* Callbacks for filesystems */ - struct lock_manager_operations *fl_lmops; /* Callbacks for lockmanagers */ + const struct file_lock_operations *fl_ops; /* Callbacks for filesystems */ + const struct lock_manager_operations *fl_lmops; /* Callbacks for lockmanagers */ union { struct nfs_lock_info nfs_fl; struct nfs4_lock_info nfs4_fl; @@ -1047,6 +1118,7 @@ extern void locks_copy_lock(struct file_lock *, struct file_lock *); extern void __locks_copy_lock(struct file_lock *, const struct file_lock *); extern void locks_remove_posix(struct file *, fl_owner_t); extern void locks_remove_flock(struct file *); +extern void locks_release_private(struct file_lock *); extern void posix_test_lock(struct file *, struct file_lock *); extern int posix_lock_file(struct file *, struct file_lock *, struct file_lock *); extern int posix_lock_file_wait(struct file *, struct file_lock *); @@ -1063,34 +1135,147 @@ 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); #else /* !CONFIG_FILE_LOCKING */ -#define fcntl_getlk(a, b) ({ -EINVAL; }) -#define fcntl_setlk(a, b, c, d) ({ -EACCES; }) +static inline int fcntl_getlk(struct file *file, struct flock __user *user) +{ + return -EINVAL; +} + +static inline int fcntl_setlk(unsigned int fd, struct file *file, + unsigned int cmd, struct flock __user *user) +{ + return -EACCES; +} + #if BITS_PER_LONG == 32 -#define fcntl_getlk64(a, b) ({ -EINVAL; }) -#define fcntl_setlk64(a, b, c, d) ({ -EACCES; }) +static inline int fcntl_getlk64(struct file *file, struct flock64 __user *user) +{ + return -EINVAL; +} + +static inline int fcntl_setlk64(unsigned int fd, struct file *file, + unsigned int cmd, struct flock64 __user *user) +{ + return -EACCES; +} #endif -#define fcntl_setlease(a, b, c) ({ 0; }) -#define fcntl_getlease(a) ({ 0; }) -#define locks_init_lock(a) ({ }) -#define __locks_copy_lock(a, b) ({ }) -#define locks_copy_lock(a, b) ({ }) -#define locks_remove_posix(a, b) ({ }) -#define locks_remove_flock(a) ({ }) -#define posix_test_lock(a, b) ({ 0; }) -#define posix_lock_file(a, b, c) ({ -ENOLCK; }) -#define posix_lock_file_wait(a, b) ({ -ENOLCK; }) -#define posix_unblock_lock(a, b) (-ENOENT) -#define vfs_test_lock(a, b) ({ 0; }) -#define vfs_lock_file(a, b, c, d) (-ENOLCK) -#define vfs_cancel_lock(a, b) ({ 0; }) -#define flock_lock_file_wait(a, b) ({ -ENOLCK; }) -#define __break_lease(a, b) ({ 0; }) -#define lease_get_mtime(a, b) ({ }) -#define generic_setlease(a, b, c) ({ -EINVAL; }) -#define vfs_setlease(a, b, c) ({ -EINVAL; }) -#define lease_modify(a, b) ({ -EINVAL; }) -#define lock_may_read(a, b, c) ({ 1; }) -#define lock_may_write(a, b, c) ({ 1; }) +static inline int fcntl_setlease(unsigned int fd, struct file *filp, long arg) +{ + return 0; +} + +static inline int fcntl_getlease(struct file *filp) +{ + return 0; +} + +static inline void locks_init_lock(struct file_lock *fl) +{ + return; +} + +static inline void __locks_copy_lock(struct file_lock *new, struct file_lock *fl) +{ + return; +} + +static inline void locks_copy_lock(struct file_lock *new, struct file_lock *fl) +{ + return; +} + +static inline void locks_remove_posix(struct file *filp, fl_owner_t owner) +{ + return; +} + +static inline void locks_remove_flock(struct file *filp) +{ + return; +} + +static inline void posix_test_lock(struct file *filp, struct file_lock *fl) +{ + return; +} + +static inline int posix_lock_file(struct file *filp, struct file_lock *fl, + struct file_lock *conflock) +{ + return -ENOLCK; +} + +static inline int posix_lock_file_wait(struct file *filp, struct file_lock *fl) +{ + return -ENOLCK; +} + +static inline int posix_unblock_lock(struct file *filp, + struct file_lock *waiter) +{ + return -ENOENT; +} + +static inline int vfs_test_lock(struct file *filp, struct file_lock *fl) +{ + return 0; +} + +static inline int vfs_lock_file(struct file *filp, unsigned int cmd, + struct file_lock *fl, struct file_lock *conf) +{ + return -ENOLCK; +} + +static inline int vfs_cancel_lock(struct file *filp, struct file_lock *fl) +{ + return 0; +} + +static inline int flock_lock_file_wait(struct file *filp, + struct file_lock *request) +{ + return -ENOLCK; +} + +static inline int __break_lease(struct inode *inode, unsigned int mode) +{ + return 0; +} + +static inline void lease_get_mtime(struct inode *inode, struct timespec *time) +{ + return; +} + +static inline int generic_setlease(struct file *filp, long arg, + struct file_lock **flp) +{ + return -EINVAL; +} + +static inline int vfs_setlease(struct file *filp, long arg, + struct file_lock **lease) +{ + return -EINVAL; +} + +static inline int lease_modify(struct file_lock **before, int arg) +{ + return -EINVAL; +} + +static inline int lock_may_read(struct inode *inode, loff_t start, + unsigned long len) +{ + return 1; +} + +static inline int lock_may_write(struct inode *inode, loff_t start, + unsigned long len) +{ + return 1; +} + #endif /* !CONFIG_FILE_LOCKING */ @@ -1135,11 +1320,11 @@ struct super_block { unsigned long s_blocksize; unsigned char s_blocksize_bits; unsigned char s_dirt; - unsigned long long s_maxbytes; /* Max file size */ + loff_t s_maxbytes; /* Max file size */ struct file_system_type *s_type; const struct super_operations *s_op; - struct dquot_operations *dq_op; - struct quotactl_ops *s_qcop; + const struct dquot_operations *dq_op; + const struct quotactl_ops *s_qcop; const struct export_operations *s_export_op; unsigned long s_flags; unsigned long s_magic; @@ -1147,7 +1332,7 @@ struct super_block { struct rw_semaphore s_umount; struct mutex s_lock; int s_count; - int s_need_sync_fs; + int s_need_sync; atomic_t s_active; #ifdef CONFIG_SECURITY void *s_security; @@ -1155,9 +1340,6 @@ struct super_block { struct xattr_handler **s_xattr; struct list_head s_inodes; /* all inodes */ - struct list_head s_dirty; /* dirty inodes */ - struct list_head s_io; /* parked for writeback */ - struct list_head s_more_io; /* parked for more writeback */ struct hlist_head s_anon; /* anonymous dentries for (nfs) exporting */ struct list_head s_files; /* s_dentry_lru and s_nr_dentry_unused are protected by dcache_lock */ @@ -1165,6 +1347,7 @@ struct super_block { int s_nr_dentry_unused; /* # of dentry on lru */ struct block_device *s_bdev; + struct backing_dev_info *s_bdi; struct mtd_info *s_mtd; struct list_head s_instances; struct quota_info s_dquot; /* Diskquota specific options */ @@ -1198,11 +1381,6 @@ struct super_block { * generic_show_options() */ char *s_options; - - /* - * storage for asynchronous operations - */ - struct list_head s_async_list; }; extern struct timespec current_fs_time(struct super_block *sb); @@ -1282,11 +1460,6 @@ int fiemap_check_flags(struct fiemap_extent_info *fieinfo, u32 fs_flags); #define DT_SOCK 12 #define DT_WHT 14 -#define OSYNC_METADATA (1<<0) -#define OSYNC_DATA (1<<1) -#define OSYNC_INODE (1<<2) -int generic_osync_inode(struct inode *, struct address_space *, int); - /* * This is the "filldir" function type, used by readdir() to let * the kernel specify what kind of dirent layout it wants to have. @@ -1352,6 +1525,7 @@ struct inode_operations { void (*put_link) (struct dentry *, struct nameidata *, void *); void (*truncate) (struct inode *); int (*permission) (struct inode *, int); + int (*check_acl)(struct inode *, int); int (*setattr) (struct dentry *, struct iattr *); int (*getattr) (struct vfsmount *mnt, struct dentry *, struct kstat *); int (*setxattr) (struct dentry *, const char *,const void *,size_t,int); @@ -1581,6 +1755,9 @@ struct file_system_type { struct lock_class_key i_alloc_sem_key; }; +extern int get_sb_ns(struct file_system_type *fs_type, int flags, void *data, + int (*fill_super)(struct super_block *, void *, int), + struct vfsmount *mnt); 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), @@ -1598,6 +1775,7 @@ void kill_block_super(struct super_block *sb); void kill_anon_super(struct super_block *sb); void kill_litter_super(struct super_block *sb); void deactivate_super(struct super_block *sb); +void deactivate_locked_super(struct super_block *sb); int set_anon_super(struct super_block *s, void *data); struct super_block *sget(struct file_system_type *type, int (*test)(struct super_block *,void *), @@ -1606,8 +1784,9 @@ struct super_block *sget(struct file_system_type *type, extern int get_sb_pseudo(struct file_system_type *, char *, const struct super_operations *ops, unsigned long, struct vfsmount *mnt); -extern int simple_set_mnt(struct vfsmount *mnt, struct super_block *sb); +extern void simple_set_mnt(struct vfsmount *mnt, struct super_block *sb); int __put_super_and_need_restart(struct super_block *sb); +void put_super(struct super_block *sb); /* Alas, no aliases. Too much hassle with bringing module.h everywhere */ #define fops_get(fops) \ @@ -1622,11 +1801,13 @@ extern struct vfsmount *kern_mount_data(struct file_system_type *, void *data); extern int may_umount_tree(struct vfsmount *); extern int may_umount(struct vfsmount *); extern long do_mount(char *, char *, char *, unsigned long, void *); -extern struct vfsmount *collect_mounts(struct vfsmount *, struct dentry *); +extern struct vfsmount *collect_mounts(struct path *); extern void drop_collected_mounts(struct vfsmount *); extern int vfs_statfs(struct dentry *, struct kstatfs *); +extern int current_umask(void); + /* /sys/fs */ extern struct kobject *fs_kobj; @@ -1687,19 +1868,52 @@ static inline int break_lease(struct inode *inode, unsigned int mode) return 0; } #else /* !CONFIG_FILE_LOCKING */ -#define locks_mandatory_locked(a) ({ 0; }) -#define locks_mandatory_area(a, b, c, d, e) ({ 0; }) -#define __mandatory_lock(a) ({ 0; }) -#define mandatory_lock(a) ({ 0; }) -#define locks_verify_locked(a) ({ 0; }) -#define locks_verify_truncate(a, b, c) ({ 0; }) -#define break_lease(a, b) ({ 0; }) +static inline int locks_mandatory_locked(struct inode *inode) +{ + return 0; +} + +static inline int locks_mandatory_area(int rw, struct inode *inode, + struct file *filp, loff_t offset, + size_t count) +{ + return 0; +} + +static inline int __mandatory_lock(struct inode *inode) +{ + return 0; +} + +static inline int mandatory_lock(struct inode *inode) +{ + return 0; +} + +static inline int locks_verify_locked(struct inode *inode) +{ + return 0; +} + +static inline int locks_verify_truncate(struct inode *inode, struct file *filp, + size_t size) +{ + return 0; +} + +static inline int break_lease(struct inode *inode, unsigned int mode) +{ + return 0; +} + #endif /* CONFIG_FILE_LOCKING */ /* fs/open.c */ extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs, struct file *filp); +extern int do_fallocate(struct file *file, int mode, loff_t offset, + loff_t len); extern long do_sys_open(int dfd, const char __user *filename, int flags, int mode); extern struct file *filp_open(const char *, int, int); @@ -1708,14 +1922,19 @@ extern struct file * dentry_open(struct dentry *, struct vfsmount *, int, extern int filp_close(struct file *, fl_owner_t id); extern char * getname(const char __user *); +/* fs/ioctl.c */ + +extern int ioctl_preallocate(struct file *filp, void __user *argp); + /* fs/dcache.c */ extern void __init vfs_caches_init_early(void); extern void __init vfs_caches_init(unsigned long); extern struct kmem_cache *names_cachep; -#define __getname() kmem_cache_alloc(names_cachep, GFP_KERNEL) -#define __putname(name) kmem_cache_free(names_cachep, (void *)(name)) +#define __getname_gfp(gfp) kmem_cache_alloc(names_cachep, (gfp)) +#define __getname() __getname_gfp(GFP_KERNEL) +#define __putname(name) kmem_cache_free(names_cachep, (void *)(name)) #ifndef CONFIG_AUDITSYSCALL #define putname(name) __putname(name) #else @@ -1726,13 +1945,33 @@ extern void putname(const char *name); extern int register_blkdev(unsigned int, const char *); extern void unregister_blkdev(unsigned int, const char *); extern struct block_device *bdget(dev_t); +extern struct block_device *bdgrab(struct block_device *bdev); extern void bd_set_size(struct block_device *, loff_t size); extern void bd_forget(struct inode *inode); extern void bdput(struct block_device *); extern struct block_device *open_by_devnum(dev_t, fmode_t); +extern void invalidate_bdev(struct block_device *); +extern int sync_blockdev(struct block_device *bdev); +extern struct super_block *freeze_bdev(struct block_device *); +extern void emergency_thaw_all(void); +extern int thaw_bdev(struct block_device *bdev, struct super_block *sb); +extern int fsync_bdev(struct block_device *); #else static inline void bd_forget(struct inode *inode) {} +static inline int sync_blockdev(struct block_device *bdev) { return 0; } +static inline void invalidate_bdev(struct block_device *bdev) {} + +static inline struct super_block *freeze_bdev(struct block_device *sb) +{ + return NULL; +} + +static inline int thaw_bdev(struct block_device *bdev, struct super_block *sb) +{ + return 0; +} #endif +extern int sync_filesystem(struct super_block *); extern const struct file_operations def_blk_fops; extern const struct file_operations def_chr_fops; extern const struct file_operations bad_sock_fops; @@ -1758,12 +1997,25 @@ extern void bd_release_from_disk(struct block_device *, struct gendisk *); #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 *, - const struct file_operations *); -extern void unregister_chrdev(unsigned int, const char *); +extern int __register_chrdev(unsigned int major, unsigned int baseminor, + unsigned int count, const char *name, + const struct file_operations *fops); +extern void __unregister_chrdev(unsigned int major, unsigned int baseminor, + unsigned int count, const char *name); extern void unregister_chrdev_region(dev_t, unsigned); extern void chrdev_show(struct seq_file *,off_t); +static inline int register_chrdev(unsigned int major, const char *name, + const struct file_operations *fops) +{ + return __register_chrdev(major, 0, 256, name, fops); +} + +static inline void unregister_chrdev(unsigned int major, const char *name) +{ + __unregister_chrdev(major, 0, 256, name); +} + /* fs/block_dev.c */ #define BDEVNAME_SIZE 32 /* Largest string for a blockdev identifier */ #define BDEVT_SIZE 10 /* Largest string for MAJ:MIN for blkdev */ @@ -1812,9 +2064,6 @@ extern int __invalidate_device(struct block_device *); extern int invalidate_partition(struct gendisk *, int); #endif extern int invalidate_inodes(struct super_block *); -unsigned long __invalidate_mapping_pages(struct address_space *mapping, - pgoff_t start, pgoff_t end, - bool be_atomic); unsigned long invalidate_mapping_pages(struct address_space *mapping, pgoff_t start, pgoff_t end); @@ -1833,30 +2082,27 @@ static inline void invalidate_remote_inode(struct inode *inode) extern int invalidate_inode_pages2(struct address_space *mapping); extern int invalidate_inode_pages2_range(struct address_space *mapping, pgoff_t start, pgoff_t end); -extern void generic_sync_sb_inodes(struct super_block *sb, - struct writeback_control *wbc); extern int write_inode_now(struct inode *, int); extern int filemap_fdatawrite(struct address_space *); extern int filemap_flush(struct address_space *); extern int filemap_fdatawait(struct address_space *); +extern int filemap_fdatawait_range(struct address_space *, loff_t lstart, + loff_t lend); extern int filemap_write_and_wait(struct address_space *mapping); extern int filemap_write_and_wait_range(struct address_space *mapping, loff_t lstart, loff_t lend); -extern int wait_on_page_writeback_range(struct address_space *mapping, - pgoff_t start, pgoff_t end); extern int __filemap_fdatawrite_range(struct address_space *mapping, loff_t start, loff_t end, int sync_mode); extern int filemap_fdatawrite_range(struct address_space *mapping, loff_t start, loff_t end); +extern int vfs_fsync_range(struct file *file, struct dentry *dentry, + loff_t start, loff_t end, int datasync); extern int vfs_fsync(struct file *file, struct dentry *dentry, int datasync); +extern int generic_write_sync(struct file *file, loff_t pos, loff_t count); extern void sync_supers(void); -extern void sync_filesystems(int wait); -extern void __fsync_super(struct super_block *sb); extern void emergency_sync(void); extern void emergency_remount(void); -extern int do_remount_sb(struct super_block *sb, int flags, - void *data, int force); #ifdef CONFIG_BLOCK extern sector_t bmap(struct inode *, sector_t); #endif @@ -1887,10 +2133,10 @@ extern struct file *create_write_pipe(int flags); extern void free_write_pipe(struct file *); extern struct file *do_filp_open(int dfd, const char *pathname, - int open_flag, int mode); + int open_flag, int mode, int acc_mode); extern int may_open(struct path *, int, int); -extern int kernel_read(struct file *, unsigned long, char *, unsigned long); +extern int kernel_read(struct file *, loff_t, char *, unsigned long); extern struct file * open_exec(const char *); /* fs/dcache.c -- generic fs support functions */ @@ -1904,7 +2150,7 @@ extern loff_t default_llseek(struct file *file, loff_t offset, int origin); extern loff_t vfs_llseek(struct file *file, loff_t offset, int origin); -extern struct inode * inode_init_always(struct super_block *, struct inode *); +extern int inode_init_always(struct super_block *, struct inode *); extern void inode_init_once(struct inode *); extern void inode_add_to_lists(struct super_block *, struct inode *); extern void iput(struct inode *); @@ -1913,6 +2159,7 @@ extern ino_t iunique(struct super_block *, ino_t); extern int inode_needs_sync(struct inode *inode); extern void generic_delete_inode(struct inode *inode); extern void generic_drop_inode(struct inode *inode); +extern int generic_detach_inode(struct inode *inode); extern struct inode *ilookup5_nowait(struct super_block *sb, unsigned long hashval, int (*test)(struct inode *, void *), @@ -1931,6 +2178,7 @@ extern void __iget(struct inode * inode); extern void iget_failed(struct inode *); extern void clear_inode(struct inode *); extern void destroy_inode(struct inode *); +extern void __destroy_inode(struct inode *); extern struct inode *new_inode(struct super_block *); extern int should_remove_suid(struct dentry *); extern int file_remove_suid(struct file *); @@ -1952,16 +2200,15 @@ extern int bdev_read_only(struct block_device *); extern int set_blocksize(struct block_device *, int); extern int sb_set_blocksize(struct super_block *, int); extern int sb_min_blocksize(struct super_block *, int); -extern int sb_has_dirty_inodes(struct super_block *); extern int generic_file_mmap(struct file *, struct vm_area_struct *); extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *); extern int file_read_actor(read_descriptor_t * desc, struct page *page, unsigned long offset, unsigned long size); int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int isblk); extern ssize_t generic_file_aio_read(struct kiocb *, const struct iovec *, unsigned long, loff_t); +extern ssize_t __generic_file_aio_write(struct kiocb *, const struct iovec *, unsigned long, + loff_t *); extern ssize_t generic_file_aio_write(struct kiocb *, const struct iovec *, unsigned long, loff_t); -extern ssize_t generic_file_aio_write_nolock(struct kiocb *, const struct iovec *, - unsigned long, loff_t); extern ssize_t generic_file_direct_write(struct kiocb *, const struct iovec *, unsigned long *, loff_t, loff_t *, size_t, size_t); extern ssize_t generic_file_buffered_write(struct kiocb *, const struct iovec *, @@ -1971,13 +2218,17 @@ extern ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t l extern int generic_segment_checks(const struct iovec *iov, unsigned long *nr_segs, size_t *count, int access_flags); +/* fs/block_dev.c */ +extern ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos); + /* 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 default_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_file_splice_write_nolock(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, @@ -2071,9 +2322,8 @@ extern int vfs_readdir(struct file *, filldir_t, void *); extern int vfs_stat(char __user *, struct kstat *); extern int vfs_lstat(char __user *, struct kstat *); -extern int vfs_stat_fd(int dfd, char __user *, struct kstat *); -extern int vfs_lstat_fd(int dfd, char __user *, struct kstat *); extern int vfs_fstat(unsigned int, struct kstat *); +extern int vfs_fstatat(int , char __user *, struct kstat *, int); extern int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd, unsigned long arg); @@ -2088,6 +2338,7 @@ extern void get_filesystem(struct file_system_type *fs); extern void put_filesystem(struct file_system_type *fs); extern struct file_system_type *get_fs_type(const char *name); extern struct super_block *get_super(struct block_device *); +extern struct super_block *get_active_super(struct block_device *bdev); extern struct super_block *user_get_super(dev_t); extern void drop_super(struct super_block *sb); @@ -2126,6 +2377,8 @@ extern void simple_release_fs(struct vfsmount **mount, int *count); extern ssize_t simple_read_from_buffer(void __user *to, size_t count, loff_t *ppos, const void *from, size_t available); +extern int simple_fsync(struct file *, struct dentry *, int); + #ifdef CONFIG_MIGRATION extern int buffer_migrate_page(struct address_space *, struct page *, struct page *); @@ -2133,13 +2386,15 @@ extern int buffer_migrate_page(struct address_space *, #define buffer_migrate_page NULL #endif -extern int inode_change_ok(struct inode *, struct iattr *); +extern int inode_change_ok(const struct inode *, struct iattr *); +extern int inode_newsize_ok(const struct inode *, loff_t offset); extern int __must_check inode_setattr(struct inode *, struct iattr *); extern void file_update_time(struct file *file); extern int generic_show_options(struct seq_file *m, struct vfsmount *mnt); extern void save_mount_options(struct super_block *sb, char *options); +extern void replace_mount_options(struct super_block *sb, char *options); static inline ino_t parent_ino(struct dentry *dentry) { @@ -2170,19 +2425,7 @@ ssize_t simple_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos); int simple_transaction_release(struct inode *inode, struct file *file); -static inline void simple_transaction_set(struct file *file, size_t n) -{ - struct simple_transaction_argresp *ar = file->private_data; - - BUG_ON(n > SIMPLE_TRANSACTION_LIMIT); - - /* - * The barrier ensures that ar->size will really remain zero until - * ar->data is ready for reading. - */ - smp_mb(); - ar->size = n; -} +void simple_transaction_set(struct file *file, size_t n); /* * simple attribute files @@ -2206,7 +2449,7 @@ static int __fops ## _open(struct inode *inode, struct file *file) \ __simple_attr_check_format(__fmt, 0ull); \ return simple_attr_open(inode, file, __get, __set, __fmt); \ } \ -static struct file_operations __fops = { \ +static const struct file_operations __fops = { \ .owner = THIS_MODULE, \ .open = __fops ## _open, \ .release = simple_attr_release, \ @@ -2229,32 +2472,11 @@ ssize_t simple_attr_read(struct file *file, char __user *buf, ssize_t simple_attr_write(struct file *file, const char __user *buf, size_t len, loff_t *ppos); - -#ifdef CONFIG_SECURITY -static inline char *alloc_secdata(void) -{ - return (char *)get_zeroed_page(GFP_KERNEL); -} - -static inline void free_secdata(void *secdata) -{ - free_page((unsigned long)secdata); -} -#else -static inline char *alloc_secdata(void) -{ - return (char *)1; -} - -static inline void free_secdata(void *secdata) -{ } -#endif /* CONFIG_SECURITY */ - struct ctl_table; -int proc_nr_files(struct ctl_table *table, int write, struct file *filp, +int proc_nr_files(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos); -int get_filesystem_list(char * buf); +int __init get_filesystem_list(char *buf); #endif /* __KERNEL__ */ #endif /* _LINUX_FS_H */