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H A Ddrbd_actlog.cdiff 0b6ef4164f50698eee536903d69d086add1a7889 Wed Mar 27 08:08:49 CDT 2013 Lars Ellenberg <lars.ellenberg@linbit.com> drbd: fix if(); found by kbuild test robot

Recently introduced al_begin_io_nonblock() was returning -EBUSY,
even when it should return -EWOULDBLOCK.

Impact:
A few spurious wake_up() calls in prepare_al_transaction_nonblock().

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>