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[Qemu-devel] [PATCH 0/3] aio-posix: polling mode bug fixes

From: Paolo Bonzini
Subject: [Qemu-devel] [PATCH 0/3] aio-posix: polling mode bug fixes
Date: Wed, 12 Sep 2018 19:10:37 +0200

Patch 1 fixes a too-strict assertion that could fire when aio_poll
is called in parallel with aio_set_fd_handler.

Patch 2 and 3 reinstate the performance benefits of polling, which were
essentially disabled by commit 70232b5253 ("aio-posix: Don't count
ctx->notifier as progress when polling", 2018-08-15).

Please review carefully! :)



Paolo Bonzini (3):
  aio-posix: fix concurrent access to poll_disable_cnt
  aio-posix: compute timeout before polling
  aio-posix: do skip system call if ctx->notifier polling succeeds

 util/aio-posix.c  | 88 +++++++++++++++++++++++++++--------------------
 util/trace-events |  4 +--
 2 files changed, 53 insertions(+), 39 deletions(-)


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