'btrfs fi label /btrfs' will hang until balance is completed.
(and probably even set label would hang). This is because we
are trying to hold volume_mutex lock which balance will hold
during its tenure.
-------
static int btrfs_ioctl_get_fslabel(struct file *file, void __user *arg)
::
mutex_lock(&root->fs_info->volume_mutex);
ret = copy_to_user(arg, label, len);
mutex_unlock(&root->fs_info->volume_mutex);
--------
I doubt if get label would need such a heavy weight lock?
Do we have any other lock which could fit better here ?
Any comments ?
Thanks, Anand
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
