*But* in general it makes sense to me that any iomap operation ought to be able to revalidate a mapping at any time. > Additionally do you have a test for this stale data exposure? I think no matter > what the solution it would be good to have a test for this so that we can make > sure we're all doing the correct thing with zero range. Thanks, I was also curious about this. IIRC we have some tests for the validiting checking itself, but I don't recall if there's a specific regression test for the eofblock clearing. --D > Josef >