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[PATCH 0/4] block: Split padded I/O vectors exceeding IOV_MAX

From: Hanna Czenczek
Subject: [PATCH 0/4] block: Split padded I/O vectors exceeding IOV_MAX
Date: Fri, 17 Mar 2023 18:50:15 +0100


Thanks for the feedback on the RFC!  Sounds like we agree that this is
the right way to fix the bug.

Here in v1, I’ve followed Vladimir’s suggestion to inline the
functionality of qemu_iovec_init_extended() in block/io.c, which, I
think (hope), also addresses much of the feedback of Eric and Stefan.

The test is unchanged, the rest is pretty much rewritten (though in
spirit stays the same).

Hanna Czenczek (4):
  util/iov: Make qiov_slice() public
  block: Split padded I/O vectors exceeding IOV_MAX
  util/iov: Remove qemu_iovec_init_extended()
  iotests/iov-padding: New test

 include/qemu/iov.h                       |   8 +-
 block/io.c                               | 153 +++++++++++++++++++++--
 util/iov.c                               |  89 +++----------
 tests/qemu-iotests/tests/iov-padding     |  85 +++++++++++++
 tests/qemu-iotests/tests/iov-padding.out |  59 +++++++++
 5 files changed, 306 insertions(+), 88 deletions(-)
 create mode 100755 tests/qemu-iotests/tests/iov-padding
 create mode 100644 tests/qemu-iotests/tests/iov-padding.out


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