Re: [Experimental][PATCH] putback_lru_page rework

[Lee Schermerhorn]

On Fri, 2008-06-20 at 13:10 -0400, Lee Schermerhorn wrote:
> On Fri, 2008-06-20 at 10:13 +0900, KAMEZAWA Hiroyuki wrote:
> > Lee-san, this is an additonal one..
> > Not-tested-yet, just by review.
> 
> OK, I'll test this on my x86_64 platform, which doesn't seem to hit the
> soft lockups.
> 

Quick update:  

With this patch applied, at ~ 1.5 hours into the test, my system panic'd
[panic_on_oops set] with a BUG in __find_get_block() -- looks like the
BUG_ON() in check_irqs_on() called from bh_lru_install() inlined by
__find_get_block().  Before the panic occurred, I saw warnings from
native_smp_call_function_mask() [arch/x86/kernel/smp.c]--also because
irqs_disabled().

I'll back out the changes [spin_[un]lock() => spin_[un]lock_irq()] to
shrink_inactive_list() and try again.  Just a hunch.

Lee

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