From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rik van Riel <riel@redhat.com>
Subject: Re: [FYI] tux3: Core changes
Date: Tue, 26 May 2015 00:25:44 -0400
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Cc: linux-fsdevel@vger.kernel.org, tux3@tux3.org, Jan Kara <jack@suse.cz>,
 linux-kernel@vger.kernel.org, OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
To: Daniel Phillips <daniel@phunq.net>, David Lang <david@lang.hm>
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On 05/21/2015 03:53 PM, Daniel Phillips wrote:
> On Wednesday, May 20, 2015 8:51:46 PM PDT, David Lang wrote:
>> how do you prevent it from continuing to interact with the old version
>> of the page and never see updates or have it's changes reflected on
>> the current page?
> 
> Why would it do that, and what would be surprising about it? Did
> you have a specific case in mind?

After a get_page(), page_cache_get(), or other equivalent
function, a piece of code has the expectation that it can
continue using that page until after it has released the
reference count.

This can be an arbitrarily long period of time.

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