svn commit: r309772 - head/sys/vm

[Xin LI]

Thanks!

On Fri, Dec 9, 2016 at 1:21 PM, Gleb Smirnoff <glebius at freebsd.org> wrote:
> Author: glebius
> Date: Fri Dec  9 21:21:24 2016
> New Revision: 309772
> URL: https://svnweb.freebsd.org/changeset/base/309772
>
> Log:
>   Allow bogus_page to be passed to pager(s).
>
> Modified:
>   head/sys/vm/vm_pager.c
>
> Modified: head/sys/vm/vm_pager.c
> ==============================================================================
> --- head/sys/vm/vm_pager.c      Fri Dec  9 21:17:40 2016        (r309771)
> +++ head/sys/vm/vm_pager.c      Fri Dec  9 21:21:24 2016        (r309772)
> @@ -84,6 +84,8 @@ __FBSDID("$FreeBSD$");
>  #include <vm/vm_pager.h>
>  #include <vm/vm_extern.h>
>
> +extern vm_page_t bogus_page;
> +
>  int cluster_pbuf_freecnt = -1; /* unlimited to begin with */
>
>  struct buf *swbuf;
> @@ -260,6 +262,8 @@ vm_pager_assert_in(vm_object_t object, v
>          * not dirty and belong to the proper object.
>          */
>         for (int i = 0 ; i < count; i++) {
> +               if (m[i] == bogus_page)
> +                       continue;
>                 vm_page_assert_xbusied(m[i]);
>                 KASSERT(!pmap_page_is_mapped(m[i]),
>                     ("%s: page %p is mapped", __func__, m[i]));
>