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    SubjectSuspend 2 merge: 16/51: Disable cache reaping during suspend.
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    I have to admit to being a little unsure as to why this is needed, but
    suspend's reliability is helped a lot by disabling cache reaping while
    suspending. Perhaps one of the mm guys will be able to enlighten me
    here. Might be SMP related.

    diff -ruN 505-disable-cache-reaping-during-suspend-old/mm/slab.c 505-disable-cache-reaping-during-suspend-new/mm/slab.c
    --- 505-disable-cache-reaping-during-suspend-old/mm/slab.c 2004-11-03 21:55:05.000000000 +1100
    +++ 505-disable-cache-reaping-during-suspend-new/mm/slab.c 2004-11-06 09:25:01.972547184 +1100
    @@ -92,6 +92,7 @@
    #include <linux/sysctl.h>
    #include <linux/module.h>
    #include <linux/rcupdate.h>
    +#include <linux/suspend.h>

    #include <asm/uaccess.h>
    #include <asm/cacheflush.h>
    @@ -2730,7 +2731,9 @@
    {
    struct list_head *walk;

    - if (down_trylock(&cache_chain_sem)) {
    + if ((unlikely(test_suspend_state(SUSPEND_RUNNING))) ||
    + (down_trylock(&cache_chain_sem)))
    + {
    /* Give up. Setup the next iteration. */
    schedule_delayed_work(&__get_cpu_var(reap_work), REAPTIMEOUT_CPUC + smp_processor_id());
    return;

    -
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