Date: Mon, 23 May 2016 13:54:18 -0700 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: Rick Miller <vmiller@hostileadmin.com> Subject: Re: AIO in 10.0-RELEASE Message-ID: <5493135.9JME949vIb@ralph.baldwin.cx> In-Reply-To: <CAHzLAVFSPoehU%2BSiSgnWY9taBn3nh6T=bhEYyCVhzOaq2nJbmw@mail.gmail.com> References: <CAHzLAVFSPoehU%2BSiSgnWY9taBn3nh6T=bhEYyCVhzOaq2nJbmw@mail.gmail.com>
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On Thursday, April 07, 2016 01:45:46 PM Rick Miller wrote: > Please reply directly as I am not currently subscribed to this particular > mailing list... > > A user has been implementing AIO features in an application on FreeBSD > 10.0-RELEASE. They assert that, despite aio(4) stating that it is enabled > either statically (with VFS_AIO in the kernel config) or dynamically > (kldload), in their development environment there was no requirement for > either of these methods of enabling AIO. My google-foo is failing me when > it comes to FreeBSD's AIO. > > This question defies logic, but is it possible that AIO works by default in > earlier versions of 10.0 and not in more recent version of 10.0 without any > local system changes? > > It is understood that AIO has recently been enabled by default in FreeBSD > 10.3 and -CURRENT. This particular scenario is applicable to 10.0. I don't think 10.3 has enabled it by default. All of my changes are only in HEAD. I think you've always had to enable aio explicitly via kldload or VFS_AIO in a custom kernel prior to my changes in 11. -- John Baldwin
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