From: Stefan Hajnoczi <stefanha@gmail.com>
To: Fam Zheng <famz@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>,
Michael Roth <mdroth@linux.vnet.ibm.com>,
qemu-devel@nongnu.org, Stefan Hajnoczi <stefanha@redhat.com>,
Igor Mammedov <imammedo@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [Qemu-devel] [RFC v2 2/6] aio: add aio_context_acquire() and aio_context_release()
Date: Thu, 20 Feb 2014 13:45:30 +0100 [thread overview]
Message-ID: <20140220124530.GB15847@stefanha-thinkpad.redhat.com> (raw)
In-Reply-To: <20140120102950.GB5727@T430.nay.redhat.com>
On Mon, Jan 20, 2014 at 06:29:50PM +0800, Fam Zheng wrote:
> On Fri, 01/10 09:45, Stefan Hajnoczi wrote:
> > +/* Take ownership of the AioContext. If the AioContext will be shared between
> > + * threads, a thread must have ownership when calling aio_poll().
> > + *
> > + * Note that multiple threads calling aio_poll() means timers, BHs, and
> > + * callbacks may be invoked from a different thread than they were registered
> > + * from. Therefore, code must use AioContext acquire/release or use
> > + * fine-grained synchronization to protect shared state if other threads will
> > + * be accessing it simultaneously.
> > + */
> > +void aio_context_acquire(AioContext *ctx);
> > +
> > +/* Reliquinish ownership of the AioContext. */
>
> s/Reliquinish/Relinquish/
Fixed in next version.
next prev parent reply other threads:[~2014-02-20 12:45 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-10 1:45 [Qemu-devel] [RFC v2 0/6] dataplane: switch to N:M devices-per-thread model Stefan Hajnoczi
2014-01-10 1:45 ` [Qemu-devel] [RFC v2 1/6] rfifolock: add recursive FIFO lock Stefan Hajnoczi
2014-01-20 10:22 ` Fam Zheng
2014-02-20 12:45 ` Stefan Hajnoczi
2014-01-10 1:45 ` [Qemu-devel] [RFC v2 2/6] aio: add aio_context_acquire() and aio_context_release() Stefan Hajnoczi
2014-01-20 10:29 ` Fam Zheng
2014-02-20 12:45 ` Stefan Hajnoczi [this message]
2014-01-10 1:45 ` [Qemu-devel] [RFC v2 3/6] iothread: add I/O thread object Stefan Hajnoczi
2014-01-10 1:45 ` [Qemu-devel] [RFC v2 4/6] qdev: add get_pointer_and_free() for temporary strings Stefan Hajnoczi
2014-01-10 1:45 ` [Qemu-devel] [RFC v2 5/6] iothread: add "iothread" qdev property type Stefan Hajnoczi
2014-01-10 1:45 ` [Qemu-devel] [RFC v2 6/6] dataplane: replace internal thread with IOThread Stefan Hajnoczi
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