diff options
| author | Jeff Layton <jlayton@kernel.org> | 2024-02-01 02:01:45 +0300 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2024-02-05 15:11:35 +0300 |
| commit | 75cabec0111b7ccb140d917cc9c481e845cc3498 (patch) | |
| tree | bdb05f83be056d66d4be6c680aec3c7351e94298 /include/linux/filelock.h | |
| parent | 6021d62c677f12f2f975bb1bf2389730e1d9f746 (diff) | |
| download | linux-75cabec0111b7ccb140d917cc9c481e845cc3498.tar.xz | |
filelock: add some new helper functions
In later patches we're going to embed some common fields into a new
structure inside struct file_lock. Smooth the transition by adding some
new helper functions, and converting the core file locking code to use
them.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20240131-flsplit-v3-4-c6129007ee8d@kernel.org
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include/linux/filelock.h')
| -rw-r--r-- | include/linux/filelock.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/linux/filelock.h b/include/linux/filelock.h index 085ff6ba0653..a3cb59b7922a 100644 --- a/include/linux/filelock.h +++ b/include/linux/filelock.h @@ -147,6 +147,29 @@ int fcntl_setlk64(unsigned int, struct file *, unsigned int, int fcntl_setlease(unsigned int fd, struct file *filp, int arg); int fcntl_getlease(struct file *filp); +static inline bool lock_is_unlock(struct file_lock *fl) +{ + return fl->fl_type == F_UNLCK; +} + +static inline bool lock_is_read(struct file_lock *fl) +{ + return fl->fl_type == F_RDLCK; +} + +static inline bool lock_is_write(struct file_lock *fl) +{ + return fl->fl_type == F_WRLCK; +} + +static inline void locks_wake_up(struct file_lock *fl) +{ + wake_up(&fl->fl_wait); +} + +/* for walking lists of file_locks linked by fl_list */ +#define for_each_file_lock(_fl, _head) list_for_each_entry(_fl, _head, fl_list) + /* fs/locks.c */ void locks_free_lock_context(struct inode *inode); void locks_free_lock(struct file_lock *fl); @@ -223,6 +246,27 @@ static inline int fcntl_getlease(struct file *filp) return F_UNLCK; } +static inline bool lock_is_unlock(struct file_lock *fl) +{ + return false; +} + +static inline bool lock_is_read(struct file_lock *fl) +{ + return false; +} + +static inline bool lock_is_write(struct file_lock *fl) +{ + return false; +} + +static inline void locks_wake_up(struct file_lock *fl) +{ +} + +#define for_each_file_lock(_fl, _head) while(false) + static inline void locks_free_lock_context(struct inode *inode) { |