ceph: fix file offset wrapping at 4GB on 32-bit archs
Cast the value before shifting so that we don't run out of bits with a
32-bit unsigned long. This fixes wrapping of high file offsets into the
low 4GB of a file on disk, and the subsequent data corruption for large
files.
Signed-off-by:
Sage Weil <sage@newdream.net>
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