nvme-fabrics: devices are uninterruptable

Tue Jan 17 02:51:54 PST 2023

On Wed, Jan 11, 2023 at 02:37:58PM +0000, Belanger, Martin wrote:
> POSIX.1 specifies that certain functions such as read() or write() can act as cancellation points.

device special files are mostly out of scope for the normal Posix
rules..

> I wanted to ask the community if there is a reason for the nvme driver to not support POSIX cancellation points? I also wanted to know whether it would be possible to add support for it? Is there a downside to doing so? 

How do you propose to allow for safe interruption?