Convert P_COWINPROGRESS to per-thread lock-less flag..

From: John Baldwin (jhb_at_FreeBSD.org)
Date: 10/23/03

  • Next message: Kirk McKusick: "Re: Convert P_COWINPROGRESS to per-thread lock-less flag.." 
    Date: Thu, 23 Oct 2003 14:30:15 -0400 (EDT)
To: arch@FreeBSD.org

    As part of the proc locking, I have a patch that converts the
    per-process P_COWINPROGRESS flag to a per-thread flag instead.
    The per-thread flag is a TDP_COWINPROGRESS flag stored in
    td_pflags which does not require any locks. This removes the
    last user of p_flag that does not use the proc lock. Are there
    any problems with making this flag per-thread instead of
    per-process?

    http://www.FreeBSD.org/~jhb/patches/cow.patch 

    -- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/
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  • Next message: Kirk McKusick: "Re: Convert P_COWINPROGRESS to per-thread lock-less flag.."