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! :)
Thanks,
Paolo
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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2.17.1
