> >> +bool btrfs_check_rw_degradable(struct btrfs_fs_info *fs_info)
> >> +{
> >> + struct btrfs_mapping_tree *map_tree = &fs_info->mapping_tree;
> >> + struct extent_map *em;
> >> + u64 next_start = 0;
> >> + bool ret = true;
> >> +
> >> + read_lock(&map_tree->map_tree.lock);
> >> + em = lookup_extent_mapping(&map_tree->map_tree, 0, (u64)-1);
> >> + read_unlock(&map_tree->map_tree.lock);
> >> + /* No chunk at all? Return false anyway */
> >> + if (!em) {
> >> + ret = false;
> >> + goto out;
> >> + }
> >> + while (em) {
> >> + struct map_lookup *map;
> >> + int missing = 0;
> >> + int max_tolerated;
> >> + int i;
> >> +
> >> + map = (struct map_lookup *) em->bdev;
> >
> >
> > any idea why not map = em->map_lookup; here?
>
>
> My fault, will update the patch.
>
> Thanks,
> Qu
Sorry to bother, but looks like this patchset suddenly got forgotten.
It still applies to 4.11 but I'm afraid it won't after 4.12 merge
window. Any update on it?
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