tree 769be98834c2c0e7a57e21c53220bc1698017686
parent 2ccf91acdec8b977c630238cee65c59b1778311a
author Jens Axboe <axboe@fb.com> 1411942723 -0600
committer Mohamad Ayyash <mkayyash@google.com> 1425693438 -0800

Fix bug with rw sequence offset and io_limit

If you do:

dd if=/dev/zero of=/dev/shm/1M bs=1M count=1
fio --bs=4k --rw=write:4k --filename=/dev/shm/1M --name=go --io_limit=2M

then fio will exit prematurely after having done 128 4KB ios,
so only 512KB are read. This is because after 128 ios, we have
reache the end of the file. Handle this case and wrap around
properly.

Signed-off-by: Jens Axboe <axboe@fb.com>