fix a weird check of the return value of aio_cancel.

i don't know what this 1 means in the first place but at least
it isn't portable.  instead, check if the i/o has already
completed. (AIO_ALLDONE)

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
1 file changed