struct loop_device *lo = bdev->bd_disk->private_data;
int err;
- mutex_lock_nested(&lo->lo_ctl_mutex, 1);
+ err = mutex_lock_killable_nested(&lo->lo_ctl_mutex, 1);
+ if (err)
+ goto out_unlocked;
+
switch (cmd) {
case LOOP_SET_FD:
err = loop_set_fd(lo, mode, bdev, arg);
switch(cmd) {
case LOOP_SET_STATUS:
- mutex_lock(&lo->lo_ctl_mutex);
- err = loop_set_status_compat(
- lo, (const struct compat_loop_info __user *) arg);
- mutex_unlock(&lo->lo_ctl_mutex);
+ err = mutex_lock_killable(&lo->lo_ctl_mutex);
+ if (!err) {
+ err = loop_set_status_compat(lo,
+ (const struct compat_loop_info __user *)arg);
+ mutex_unlock(&lo->lo_ctl_mutex);
+ }
break;
case LOOP_GET_STATUS:
- mutex_lock(&lo->lo_ctl_mutex);
- err = loop_get_status_compat(
- lo, (struct compat_loop_info __user *) arg);
- /* loop_get_status() unlocks lo_ctl_mutex */
+ err = mutex_lock_killable(&lo->lo_ctl_mutex);
+ if (!err) {
+ err = loop_get_status_compat(lo,
+ (struct compat_loop_info __user *)arg);
+ /* loop_get_status() unlocks lo_ctl_mutex */
+ }
break;
case LOOP_SET_CAPACITY:
case LOOP_CLR_FD:
ret = loop_lookup(&lo, parm);
if (ret < 0)
break;
- mutex_lock(&lo->lo_ctl_mutex);
+ ret = mutex_lock_killable(&lo->lo_ctl_mutex);
+ if (ret)
+ break;
if (lo->lo_state != Lo_unbound) {
ret = -EBUSY;
mutex_unlock(&lo->lo_ctl_mutex);