On Tue, Sep 25, 2007 at 11:45:10AM -0500, Alan Cox wrote: > Rink Springer wrote: > >Hi Alan, > > > >On Tue, Sep 25, 2007 at 06:25:07AM +0000, Alan Cox wrote: > > > >> Change the management of cached pages (PQ_CACHE) in two fundamental > >> ways: > >> > > > >With this change, KDE no longer starts up; the process 'kbuildsycoca' > >seems to wait forever in status 'madvpo'. Reverting this changeset fixes > >the problem. > > > > > > This is a problem with madvise(WILLNEED). I believe that the attached > patch will fix it. > > Thanks, > Alan > > >
> Index: vm/vm_object.c
> ===================================================================
> RCS file: /home/ncvs/src/sys/vm/vm_object.c,v
> retrieving revision 1.383
> diff -p -u -r1.383 vm_object.c
> --- vm/vm_object.c 25 Sep 2007 06:25:06 -0000 1.383
> +++ vm/vm_object.c 25 Sep 2007 16:17:40 -0000
> @@ -1105,7 +1105,8 @@ shadowlookup:
> /*
> * If the page is cached, reactivate it.
> */
> - m = vm_page_alloc(tobject, tpindex, VM_ALLOC_IFCACHED);
> + m = vm_page_alloc(tobject, tpindex, VM_ALLOC_IFCACHED |
> + VM_ALLOC_NOBUSY);
> }
> if (m == NULL) {
> /*
Yes, this indeed fixes the problem. Several minutes ago I suggested the
same change to rdivacky@, and he reported that the problem is gone.
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