The feed system on git.kernel.org seems to be broken. Check:http://git.kernel.org/?p=linux/kernel/git/mason/btrfs-unstable.git;a=rsshttp://git.kernel.org/?p=linux/kernel/git/mason/btrfs-unstable.git;a=atomThe last entry on the atom feed is from 10 September, the rss feed seems towork fine.