Comment 10 for bug 501715

In response to Davide Dente at comment #7 :

Just got a reprofiling, and of course my memory usage is higher than usual.
The debugfs DID appear in df :
none debugfs 18G 12G 4,8G 72% /var/lib/ureadahead/debugfs

So I tried to unmount it :
$ sudo umount /var/lib/ureadahead/debugfs
umount: /var/lib/ureadahead/debugfs: n'est pas monté (french of "is not mounted")

But after some time (say 20 min), the debugfs disappeared! But no memory were released.
Bugs seem disconnected to me though, now...