linux-kernel - [PATCH 0/3] zone-append support in aio and io-uring

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Date:   Wed, 17 Jun 2020 22:53:36 +0530
From:   Kanchan Joshi <joshi.k@...sung.com>
To:     axboe@...nel.dk, viro@...iv.linux.org.uk, bcrl@...ck.org
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-aio@...ck.org, io-uring@...r.kernel.org,
        linux-block@...r.kernel.org, selvakuma.s1@...sung.com,
        nj.shetty@...sung.com, javier.gonz@...sung.com,
        Kanchan Joshi <joshi.k@...sung.com>
Subject: [PATCH 0/3] zone-append support in aio and io-uring

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

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(-)

-- 
2.7.4