[parisc-linux] PA-RISC Linux VM

[Matthew Wilcox]

On Wed, Oct 31, 2001 at 01:29:14PM -0500, CARSON,KEVIN (HP-Canada,ex1) wrote:
> The recent article in Byte
> (http://www.byte.com/documents/s=1436/byt20011024s0002/1029_moshe.html)
> makes me curious; is the current pa-risc Linux port using a Rik van Viel VM
> or Andrea Arcangeli VM or some pa-risc port specific design?
> 
> Is there possibly a large changeover looming dependent upon what shakes out
> in the Linus tree?

We're sticking with 2.4.9 until we see a Linus kernel that's a little
more stable.  That's from slightly before Linus introduced Andrea's VM.

i just posted a small patch we need to linux-mm
http://mail.nl.linux.org/linux-mm/2001-10/msg00098.html
which is the equivalent of the only major vm change that we have
in our tree.  There's a couple of minor ones:

diff -u -p -r1.1.1.5 -r1.8
--- mm/shmem.c  2001/08/15 16:33:42     1.1.1.5
+++ mm/shmem.c  2001/10/01 10:19:21     1.8
@@ -377,6 +377,7 @@ repeat:
                if (!page)
                        return ERR_PTR(-ENOMEM);
                clear_highpage(page);
+               flush_dcache_page(page);
                inode->i_blocks += BLOCKS_PER_PAGE;
                add_to_page_cache (page, mapping, idx);
        }
diff -u -p -r1.1.1.13 -r1.15
--- mm/vmscan.c 2001/08/16 22:10:13     1.1.1.13
+++ mm/vmscan.c 2001/09/06 09:44:13     1.15
@@ -120,6 +120,7 @@ static void try_to_swap_out(struct mm_st
         * any IO - it's already up-to-date on disk.
         */
        if (PageSwapCache(page)) {
+               flush_cache_page(vma, address);
                entry.val = page->index;
                if (pte_dirty(pte))
                        set_page_dirty(page);

I don't anticipate either of these changes being major merge problems.

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