Re: -current lock warning...

From: Seigo Tanimura <[e-mail]>
Date: Sun, 17 Mar 2002 01:17:21 +0900
::Seigo> On Sat, 16 Mar 2002 10:22:22 +0100,
::Seigo>   Poul-Henning Kamp <[e-mail]> said:
::
::Seigo> Poul-Henning> acquiring duplicate lock of same type: "thrd_sleep"
::Seigo> Poul-Henning>  1st @ ../../../vm/vm_map.c:2288
::Seigo> Poul-Henning>  2nd @ ../../../vm/vm_kern.c:172
<snip>
::The patch attached below renames the lock of the kernel_map to
::"kernel_map" once witness gets ready to run. This eliminated all of
::the lock order reversals on my PC.

Hello Seigo,

Thanks for the patch.
That eliminated the 'duplicate lock' warning and worked fine on my UP system
with 'make -j2 buildworld'.

Thank you,
  Haro

PS. I got another message that happend when I ^C'ed a buildworld earlier, 
with same kernel. May be it should go to Alfred Perlstein?

lock order reversal
 1st 0xc198eec0 pipe mutex @ ../../../kern/sys_pipe.c:779
 2nd 0xc0367fe0 Giant @ ../../../i386/i386/trap.c:716

=------------------------------------------------------------------------------
           _ _    Munehiro (haro) Matsuda
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