ACK/cmt: [Vivid][PATCH] UBUNTU: SAUCE: ext4: disable ext4_punch_hole for indirect filesystems

[Stefan Bader]

There was, to my knowledge, extensive testing with this. And also user-space
should be prepared to handle that return code since it is documented in
fallocate(2) that not all filesystems will support it.

Chris, if I remember correctly this might be currently misbehaving in previous
releases, too. For which we probably should avoid corruption as well as long as
it takes to get a proper upstream fix.

-Stefan

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