Re: [Qemu-devel] [PATCH v4 2/9] qapi/block-core: add option for io_uring

[Stefan Hajnoczi <stefanha@redhat.com>]

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On Wed, Jun 05, 2019 at 07:58:32AM +0200, Markus Armbruster wrote:
> Aarushi Mehta <mehta.aaru20@gmail.com> writes:
> 
> > Option only enumerates for hosts that support it.
> 
> Blank line here, please.  Same in other patches.
> 
> > Signed-off-by: Aarushi Mehta <mehta.aaru20@gmail.com>
> > ---
> >  qapi/block-core.json | 4 +++-
> >  1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/qapi/block-core.json b/qapi/block-core.json
> > index 1defcde048..db7eedd058 100644
> > --- a/qapi/block-core.json
> > +++ b/qapi/block-core.json
> > @@ -2792,11 +2792,13 @@
> >  #
> >  # @threads:     Use qemu's thread pool
> >  # @native:      Use native AIO backend (only Linux and Windows)
> > +# @io_uring:    Use linux io_uring (since 4.1)
> >  #
> >  # Since: 2.9
> >  ##
> >  { 'enum': 'BlockdevAioOptions',
> > -  'data': [ 'threads', 'native' ] }
> > +  'data': [ 'threads', 'native',
> > +            { 'name': 'io_uring', 'if': 'defined(CONFIG_LINUX_IO_URING)' } ] }
> 
> We prefer '-' over '_' in the QAPI schema: 'io-uring' instead of
> 'io_uring'.  Exceptions can be made when existing siblings use '_' (not
> the case here), or to match how the thing is commonly spelled outside
> QEMU.  Up to the subject matter experts; I just want to make sure it's
> not accidental.

#2

The Linux API is called "io_uring".  That's the commonly used name for
it, not io-uring, IOURing, etc.  The QMP schema has the ability to
represent the official spelling, so I think we should use it for this
enum value.

Stefan

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