Re: [Qemu-devel] [PATCH 0/6] block: byte-based AIO read/write

[Eric Blake]

On 02/15/2018 01:28 PM, Eric Blake wrote:
> While we would prefer that block drivers use coroutines instead
> of aio callbacks, it is a fairly easy exercise to prove that
> all existing drivers with aio callbacks are merely scaling
> from bytes into sectors and back to bytes.  So, even though I
> am not set up to completely run (or even compile-test) this
> full series, it seems pretty straightforward to change the
> signature to quit playing games with pointless scaling.
> 
> Note that except for the null-aio driver, I intentionally did
> NOT try and change the request_alignment from the block layer's
> default of 512 (it defaults to 1 only for drivers that use
> coroutines).
> 
> (And along the way, I got my address@hidden working;
> thanks to the help I got on IRC)

ping

> 
> Eric Blake (6):
>   block: Support byte-based aio callbacks
>   file-win32: Switch to byte-based callbacks
>   null: Switch to byte-based read/write
>   rbd: Switch to byte-based callbacks
>   vxhs: Switch to byte-based callbacks
>   block: Drop last of the sector-based aio callbacks
> 
>  include/block/block_int.h |  8 +++---
>  include/block/raw-aio.h   |  2 +-
>  block/io.c                | 26 ++++++++++++-------
>  block/file-win32.c        | 36 +++++++++++++-------------
>  block/null.c              | 66 
> ++++++++++++++++++++++++++---------------------
>  block/rbd.c               | 36 ++++++++++++--------------
>  block/vxhs.c              | 36 +++++++++++---------------
>  block/win32-aio.c         |  5 ++--
>  8 files changed, 109 insertions(+), 106 deletions(-)
> 

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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