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[Qemu-block] [PATCH 0/3] block/io_uring: fix EINTR and resubmit short re

From: Stefan Hajnoczi
Subject: [Qemu-block] [PATCH 0/3] block/io_uring: fix EINTR and resubmit short reads
Date: Mon, 15 Jul 2019 21:19:47 +0100

Short reads are possible with cache=writeback (see Patch 3 for details).
Handle this by resubmitting requests until the read is completed.

Patch 1 adds trace events useful for debugging io_uring.

Patch 2 fixes EINTR.  This lays the groundwork for resubmitting requests in
Patch 3.

Aarushi: Feel free to squash this into your patch series if you are happy with
the code, I don't mind if the authorship information is lost.  After applying
these patches I can successfully boot a Fedora 30 guest qcow2 file with

Based-on: <address@hidden>

Stefan Hajnoczi (3):
  block/io_uring: add submission and completion trace events
  block/io_uring: fix EINTR request resubmission
  block/io_uring: resubmit short buffered reads

 block/io_uring.c   | 136 ++++++++++++++++++++++++++++++++++-----------
 block/trace-events |   6 +-
 2 files changed, 108 insertions(+), 34 deletions(-)


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