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SubjectRe: [PATCH 0/3] zone-append support in aio and io-uring
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On 17/06/2020 19.23, Kanchan Joshi wrote:
> This patchset enables issuing zone-append using aio and io-uring direct-io interface.
>
> For aio, this introduces opcode IOCB_CMD_ZONE_APPEND. Application uses start LBA
> of the zone to issue append. On completion 'res2' field is used to return
> zone-relative offset.
>
> For io-uring, this introduces three opcodes: IORING_OP_ZONE_APPEND/APPENDV/APPENDV_FIXED.
> Since io_uring does not have aio-like res2, cqe->flags are repurposed to return zone-relative offset

Please provide a pointers to applications that are updated and ready to
take advantage of zone append.

I do not believe it's beneficial at this point to change the libaio API,
applications that would want to use this API, should anyway switch to
use io_uring.

Please also note that applications and libraries that want to take
advantage of zone append, can already use the zonefs file-system, as it
will use the zone append command when applicable.

> Kanchan Joshi (1):
> aio: add support for zone-append
>
> Selvakumar S (2):
> fs,block: Introduce IOCB_ZONE_APPEND and direct-io handling
> io_uring: add support for zone-append
>
> fs/aio.c | 8 +++++
> fs/block_dev.c | 19 +++++++++++-
> fs/io_uring.c | 72 +++++++++++++++++++++++++++++++++++++++++--
> include/linux/fs.h | 1 +
> include/uapi/linux/aio_abi.h | 1 +
> include/uapi/linux/io_uring.h | 8 ++++-
> 6 files changed, 105 insertions(+), 4 deletions(-)
>

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