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Date: Thu, 5 Mar 2015 16:00:33 +0000
From: Al Viro <viro@ZenIV.linux.org.uk>
To: John Stoffel <john@stoffel.org>
Cc: NeilBrown <neilb@suse.de>, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/9] Support follow_link in RCU-walk.
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On Thu, Mar 05, 2015 at 08:52:20AM -0500, John Stoffel wrote:

> So what happens if your filesystem is 10Tb in size, and you have 50
> million files and lots of them are symlinks?  I've got developers who
> do shit like this and wonder why performance sucks....  and I just
> worry that GPF_KERNEL is a limited resource.  But maybe 64bit systems
> won't really have any problems?

What would keep all those symlinks' contents pinned in page cache?