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Hi I''ve made some updates on the wiki and I''d like a technical review for correctness. This particular topic is already confusing - some unnecessary sarcasm made it even more so: https://btrfs.wiki.kernel.org/index.php/FAQ#Why_does_df_show_incorrect_free_space_for_my_RAID_volume.3F Due to the terms "used" and "allocated" in the wiki, viric in #btrfs made