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Date:   Fri, 3 May 2019 09:23:42 +0200 (CEST)
From:   Richard Weinberger <richard@nod.at>
To:     Eugene Zemtsov <ezemtsov@google.com>
Cc:     linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        Al Viro <viro@zeniv.linux.org.uk>, tytso@mit.edu,
        Amir Goldstein <amir73il@gmail.com>,
        Miklos Szeredi <miklos@szeredi.hu>,
        Richard Weinberger <richard.weinberger@gmail.com>
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Subject: Re: Initial patches for Incremental FS
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Eugene,

----- Ursprüngliche Mail -----
> userfaultfd
> As far as I can see this would only work for mmap-ed files.
> All read() and readdir() calls would never return right results.

Yep. For lazy loading a program that should be okay.
But now with more details on your use-case I agree with Amir,
a cached network filesystem makes more sense.

Thanks,
//richard