diff options
Diffstat (limited to 'include/linux/filelock.h')
-rw-r--r-- | include/linux/filelock.h | 49 |
1 files changed, 33 insertions, 16 deletions
diff --git a/include/linux/filelock.h b/include/linux/filelock.h index 0606e806da76..553d65a88048 100644 --- a/include/linux/filelock.h +++ b/include/linux/filelock.h @@ -27,6 +27,7 @@ #define FILE_LOCK_DEFERRED 1 struct file_lock; +struct file_lease; struct file_lock_operations { void (*fl_copy_lock)(struct file_lock *, struct file_lock *); @@ -39,14 +40,17 @@ struct lock_manager_operations { void (*lm_put_owner)(fl_owner_t); void (*lm_notify)(struct file_lock *); /* unblock callback */ int (*lm_grant)(struct file_lock *, int); - bool (*lm_break)(struct file_lock *); - int (*lm_change)(struct file_lock *, int, struct list_head *); - void (*lm_setup)(struct file_lock *, void **); - bool (*lm_breaker_owns_lease)(struct file_lock *); bool (*lm_lock_expirable)(struct file_lock *cfl); void (*lm_expire_lock)(void); }; +struct lease_manager_operations { + bool (*lm_break)(struct file_lease *); + int (*lm_change)(struct file_lease *, int, struct list_head *); + void (*lm_setup)(struct file_lease *, void **); + bool (*lm_breaker_owns_lease)(struct file_lease *); +}; + struct lock_manager { struct list_head list; /* @@ -110,11 +114,6 @@ struct file_lock { loff_t fl_start; loff_t fl_end; - struct fasync_struct * fl_fasync; /* for lease break notifications */ - /* for lease breaks: */ - unsigned long fl_break_time; - unsigned long fl_downgrade_time; - const struct file_lock_operations *fl_ops; /* Callbacks for filesystems */ const struct lock_manager_operations *fl_lmops; /* Callbacks for lockmanagers */ union { @@ -131,6 +130,15 @@ struct file_lock { } fl_u; } __randomize_layout; +struct file_lease { + struct file_lock_core c; + struct fasync_struct * fl_fasync; /* for lease break notifications */ + /* for lease breaks: */ + unsigned long fl_break_time; + unsigned long fl_downgrade_time; + const struct lease_manager_operations *fl_lmops; /* Callbacks for lease managers */ +} __randomize_layout; + struct file_lock_context { spinlock_t flc_lock; struct list_head flc_flock; @@ -179,7 +187,7 @@ static inline void locks_wake_up(struct file_lock *fl) void locks_free_lock_context(struct inode *inode); void locks_free_lock(struct file_lock *fl); void locks_init_lock(struct file_lock *); -struct file_lock * locks_alloc_lock(void); +struct file_lock *locks_alloc_lock(void); void locks_copy_lock(struct file_lock *, struct file_lock *); void locks_copy_conflock(struct file_lock *, struct file_lock *); void locks_remove_posix(struct file *, fl_owner_t); @@ -193,11 +201,15 @@ int vfs_lock_file(struct file *, unsigned int, struct file_lock *, struct file_l int vfs_cancel_lock(struct file *filp, struct file_lock *fl); bool vfs_inode_has_locks(struct inode *inode); int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl); + +void locks_init_lease(struct file_lease *); +void locks_free_lease(struct file_lease *fl); +struct file_lease *locks_alloc_lease(void); int __break_lease(struct inode *inode, unsigned int flags, unsigned int type); void lease_get_mtime(struct inode *, struct timespec64 *time); -int generic_setlease(struct file *, int, struct file_lock **, void **priv); -int vfs_setlease(struct file *, int, struct file_lock **, void **); -int lease_modify(struct file_lock *, int, struct list_head *); +int generic_setlease(struct file *, int, struct file_lease **, void **priv); +int vfs_setlease(struct file *, int, struct file_lease **, void **); +int lease_modify(struct file_lease *, int, struct list_head *); struct notifier_block; int lease_register_notifier(struct notifier_block *); @@ -282,6 +294,11 @@ static inline void locks_init_lock(struct file_lock *fl) return; } +static inline void locks_init_lease(struct file_lease *fl) +{ + return; +} + static inline void locks_copy_conflock(struct file_lock *new, struct file_lock *fl) { return; @@ -356,18 +373,18 @@ static inline void lease_get_mtime(struct inode *inode, } static inline int generic_setlease(struct file *filp, int arg, - struct file_lock **flp, void **priv) + struct file_lease **flp, void **priv) { return -EINVAL; } static inline int vfs_setlease(struct file *filp, int arg, - struct file_lock **lease, void **priv) + struct file_lease **lease, void **priv) { return -EINVAL; } -static inline int lease_modify(struct file_lock *fl, int arg, +static inline int lease_modify(struct file_lease *fl, int arg, struct list_head *dispose) { return -EINVAL; |