Re: location of bioq lock

From: Poul-Henning Kamp (phk_at_phk.freebsd.dk)
Date: 07/15/05

  • Next message: Scott Long: "Re: location of bioq lock" 
    To: Luigi Rizzo <rizzo@icir.org>
Date: Fri, 15 Jul 2005 08:43:17 +0200

    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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  • Next message: Scott Long: "Re: location of bioq lock"

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