linux-kernel - Re: [RFC Patch 0/2] mm: Add parameters to make kernel behavior at memory error on dirty cache selectable

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Message-ID: <5166D390.8050704@gmail.com>
Date:	Thu, 11 Apr 2013 11:15:28 -0400
From:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
To:	Mitsuhiro Tanino <mitsuhiro.tanino.gm@...achi.com>
CC:	Andi Kleen <andi@...stfloor.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>, kosaki.motohiro@...il.com
Subject: Re: [RFC Patch 0/2] mm: Add parameters to make kernel behavior at
 memory error on dirty cache selectable

(4/10/13 11:26 PM), Mitsuhiro Tanino wrote:
> Hi All,
> Please find a patch set that introduces these new sysctl interfaces,
> to handle a case when an memory error is detected on dirty page cache.
> 
> - vm.memory_failure_dirty_panic

Panic knob is ok to me. However I agree with Andi. If we need panic know,
it should handle generic IO error and data lost.


> - vm.memory_failure_print_ratelimit
> - vm.memory_failure_print_ratelimit_burst

But this is totally silly. 
print_ratelimit might ommit important messages. Please do a right way.


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