Date: Fri, 15 Jul 2005 08:43:17 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Luigi Rizzo <rizzo@icir.org> Cc: Robert Watson <rwatson@freebsd.org>, s223560@studenti.ing.unipi.it, current@freebsd.org Subject: Re: location of bioq lock Message-ID: <8462.1121409797@phk.freebsd.dk> In-Reply-To: Your message of "Thu, 14 Jul 2005 18:13:56 PDT." <20050714181356.A58300@xorpc.icir.org>
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In message <20050714181356.A58300@xorpc.icir.org>, Luigi Rizzo writes: >Anyways there might be a way out... >requests go from dev_strategy() The right place for this is geom_disk.c:g_disk_start() and the start routines of the drivers which do not use geom_disk. The easiest way to handle it would be to set a flag on the g_provider saying "no more", have g_down spill the requests into a side queue and when the driver is ready again, it calls some function which pulls the request out of the side queue again. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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