diff options
| -rw-r--r-- | fs/locks.c | 43 |
1 files changed, 30 insertions, 13 deletions
diff --git a/fs/locks.c b/fs/locks.c index 50ec15927aa..06c77734f58 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1441,7 +1441,8 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp) return 0; out: - locks_free_lock(lease); + if (arg != F_UNLCK) + locks_free_lock(lease); return error; } EXPORT_SYMBOL(generic_setlease); @@ -1493,17 +1494,16 @@ int vfs_setlease(struct file *filp, long arg, struct file_lock **lease) } EXPORT_SYMBOL_GPL(vfs_setlease); -/** - * fcntl_setlease - sets a lease on an open file - * @fd: open file descriptor - * @filp: file pointer - * @arg: type of lease to obtain - * - * Call this fcntl to establish a lease on the file. - * Note that you also need to call %F_SETSIG to - * receive a signal when the lease is broken. - */ -int fcntl_setlease(unsigned int fd, struct file *filp, long arg) +static int do_fcntl_delete_lease(struct file *filp) +{ + struct file_lock fl, *flp = &fl; + + lease_init(filp, F_UNLCK, flp); + + return vfs_setlease(filp, F_UNLCK, &flp); +} + +static int do_fcntl_add_lease(unsigned int fd, struct file *filp, long arg) { struct file_lock *fl; struct fasync_struct *new; @@ -1521,7 +1521,7 @@ int fcntl_setlease(unsigned int fd, struct file *filp, long arg) } lock_flocks(); error = __vfs_setlease(filp, arg, &fl); - if (error || arg == F_UNLCK) + if (error) goto out_unlock; /* @@ -1550,6 +1550,23 @@ out_unlock: } /** + * fcntl_setlease - sets a lease on an open file + * @fd: open file descriptor + * @filp: file pointer + * @arg: type of lease to obtain + * + * Call this fcntl to establish a lease on the file. + * Note that you also need to call %F_SETSIG to + * receive a signal when the lease is broken. + */ +int fcntl_setlease(unsigned int fd, struct file *filp, long arg) +{ + if (arg == F_UNLCK) + return do_fcntl_delete_lease(filp); + return do_fcntl_add_lease(fd, filp, arg); +} + +/** * flock_lock_file_wait - Apply a FLOCK-style lock to a file * @filp: The file to apply the lock to * @fl: The lock to be applied |