Michael Kerrisk wrote, On 04/10/11 06:42:

Hi Jon,

On Tue, Oct 4, 2011 at 12:03 AM, Jon Grant[off-list ref]  wrote:

quoted

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.

Best regards, Jon
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