Re: Cleaning up vgone.

From: Don Lewis (truckman_at_FreeBSD.org)
Date: 03/12/05

  • Next message: Tim Kientzle: "Removing gtar from base" 
    Date: Fri, 11 Mar 2005 16:33:23 -0800 (PST)
To: dillon@apollo.backplane.com

    On 10 Mar, Matthew Dillon wrote:

    > Another thing I did in DragonFly was to get rid of the crazy handling of
    > the vnode's reference count during the reclaim. I don't know what
    > FreeBSD-HEAD is doing now, but FreeBSD-4 dropped the ref count to 0
    > and then did the crazy VXLOCK stuff. In DragonFly I changed that so
    > the ref count is left at 1 (not 0) during the reclaim. This required
    > fixing up a few cases that were checking the refcount against an absolute
    > 0 or 1 (I forget the cases), but it made the code a whole lot easier to
    > understand.

    I suggested doing this a long time ago, but there seemed to be enough
    side effects that I didn't try to implement it.

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