vfs_lock_file
error = vfs_lock_file(fl->c.flc_file, F_SETLK, fl, NULL);
error = vfs_lock_file(file->f_file[mode], F_SETLK, &lock->fl, NULL);
error = vfs_lock_file(lock->fl.c.flc_file, F_SETLK,
error |= vfs_lock_file(lock->fl.c.flc_file, F_SETLK,
error = vfs_lock_file(file->f_file[mode], F_SETLK, &lock->fl, NULL);
if (lock.c.flc_file && vfs_lock_file(lock.c.flc_file, F_SETLK, &lock, NULL))
if (lock.c.flc_file && vfs_lock_file(lock.c.flc_file, F_SETLK, &lock, NULL))
EXPORT_SYMBOL_GPL(vfs_lock_file);
error = vfs_lock_file(filp, cmd, fl, NULL);
error = vfs_lock_file(filp, F_SETLK, &lock, NULL);
err = vfs_lock_file(nf->nf_file, F_SETLK, file_lock, conflock);
err = vfs_lock_file(nf->nf_file, F_SETLK, file_lock, NULL);
rc = vfs_lock_file(filp, smb_lock->cmd, flock, NULL);
rc = vfs_lock_file(filp, F_SETLK, rlock, NULL);
int vfs_lock_file(struct file *, unsigned int, struct file_lock *, struct file_lock *);