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Re: [Qemu-block] [QEMU-devel][PATCH v3] aio-posix: Fix concurrent aio_po
Re: [Qemu-block] [QEMU-devel][PATCH v3] aio-posix: Fix concurrent aio_poll/set_fd_handler.
Wed, 19 Dec 2018 17:36:53 +0100
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.2
On 12/18/18 3:14 PM, Stefan Hajnoczi wrote:
Sorry, wasn't sure i had to do this in single commit patches without
Please include a changelog in future patches. For example:
* Don't drop revents when a handler is modified [Stefan]
That way reviewers know what to look for and which issues you have
Thanks! The worst case I can now imagine is if an fd is handled twice
due to a concurrent aio_set_fd_handler() call, but spurious
->io_read()/->io_write() should not cause problems.
Concurrent aio_set_fd_handlers should not be possible (not on the same
AioContext at least) since we lock ctx->list_lock.