Date: Mon, 7 Aug 2017 00:03:01 +0000 From: "Owens, Keith" <Keith.Owens2@dell.com> To: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Writing a GEOM class, threads that can or cannot sleep Message-ID: <0A22297308D147479E18AA1807A03807017CD4A8@MX202CL01.corp.emc.com>
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Looking at https://www.freebsd.org/doc/en/articles/geom-class/article.html, section 4.7. "The event functions are" ... "These functions are called from the g_down kernel thread and there can be no sleeping in this context". Correct me if I'm wrong, but only the start event goes via g_down. dumpconf, orphan, spoiled events go via g_event which can sleep. access can be called from any code on any thread (including g_down) so it must not sleep. What is the process for updating articles?
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