On Wed, Oct 5, 2011 at 2:08 AM, Jon Grant <jg@xxxxxxxx> wrote: > Michael Kerrisk wrote, On 04/10/11 06:42: >> >> Hi Jon, >> >> On Tue, Oct 4, 2011 at 12:03 AM, Jon Grant<jg@xxxxxxxx> wrote: >>> >>> Hello >>> >>> I have a query about the ask about the aio_cancel description please. >>> >>> http://man7.org/linux/man-pages/online/pages/man3/aio_cancel.3.html >>> >>> "Normal asynchronous notification occurs for canceled requests. The >>> request >>> return status is set to -1, and the request error status is set >>> to ECANCELED." >>> >>> I would like to ask about this description. Could the detail of >>> "request return status" and "request error status" be described >>> please. >>> >>> My assumption >>> >>> "request return status" -- perhaps the value returned by aio_return()? >>> "request error status" -- not sure. maybe aio_error() ? >>> >>> Thank you for taking a look into this. >> >> Your assumption is correct. I added some words to the man page for >> version 3.35 to clarify this. > > Looks good. > > Could I ask a related question. When an aio block is cancelled, is there > anyway to get back the byte count that was processed? e.g. aio_read, the > number of bytes read before the operation was cancelled. Offhand, I don't know. What happens if you try aio_return() + aio_error()? When you find out, send me a patch! Cheers, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Author of "The Linux Programming Interface"; http://man7.org/tlpi/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
