[linuxsh-dev] memory problem

[SUGIOKA T. <su...@it...>]

Hi, all.

On my SH7750S (200MHz, 128MB) board, user land application
causes segmentation fault and/or unaligned access randomly when
very high memory load with swap on.

You could easily reproduce with 'stress' program.
http://weather.ou.edu/~apw/projects/stress/

Following patch fixes this problem, but I'm not sure if this is correct.
Does anyone else encountered this problem?

--- mm/memory.c~      Thu Apr 11 17:57:49 2002
+++ mm/memory.c       Wed Oct 30 14:30:21 2002
@@ -1170,6 +1170,7 @@
                pte = pte_mkdirty(pte_mkwrite(pte));
        unlock_page(page);

+       flush_dcache_page(page);
        flush_page_to_ram(page);
        flush_icache_page(vma, page);
        set_pte(page_table, pte);

----
SUGIOKA Toshinobu