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Date: Mon, 21 Mar 2011 15:01:14 -0700
Message-ID: <AANLkTi=o3fN+aXSodZL_MyDnFczaXCmOjFwReD1jDZQP@mail.gmail.com>
Subject: Re: [RFC] pstore: Don't use persistent store for normal shutdown
From: Tony Luck <tony.luck@intel.com>
To: Seiji Aguchi <seiji.aguchi@hds.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        David Woodhouse <dwmw2@infradead.org>,
        Marco Stornelli <marco.stornelli@gmail.com>,
        Artem Bityutskiy <Artem.Bityutskiy@nokia.com>,
        KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Linus Torvalds <torvalds@linux-foundation.org>
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On Mon, Mar 21, 2011 at 2:47 PM, Seiji Aguchi <seiji.aguchi@hds.com> wrote:
> I think we should introduce a tunable parameter specifying how much data stores into persistent
> ram when normal shutdown happens.

Currently pstore has a /sys/fs/pstore hook to change the amount of data saved.
Christoph Hellwig convinced me that a mount option would be better, so there
is a patch pending to change this:
  http://marc.info/?l=linux-fsdevel&m=130048763005234&w=2

I can add more options easily (apart from thinking of good names for
the options :-)

But this is beginning to feel over engineered ... I think I'll wait to see
if there are some other (better) ideas before I rush to do this.

-Tony
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