Date: Mon, 22 Nov 2010 16:04:27 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-fs@freebsd.org Subject: Re: preferred kernel upcall method to master nfsd Message-ID: <ice0pk$tff$1@dough.gmane.org> In-Reply-To: <201011220928.24386.jhb@freebsd.org> References: <1121329727.428865.1290431972028.JavaMail.root@erie.cs.uoguelph.ca> <201011220928.24386.jhb@freebsd.org>
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On 11/22/10 15:28, John Baldwin wrote: > On Monday, November 22, 2010 8:19:32 am Rick Macklem wrote: >> Hi, >> >> The experimental NFSv4 server in the kernel needs to tell the master nfsd when >> to make a backup copy of the stable restart file. I know how to do this using a >> signal, but is there a better/preferred way under FreeBSD-current? > > A signal sounds like the simplest approach to me. Signals work for processes inside the kernel? How? The scheduler preempts them and does magic when deciding where to continue running them?
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