Re: [PATCH] tmpfs: generate random sb->s_uuid

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To: Amir Goldstein <amir73il@xxxxxxxxx>
Subject: Re: [PATCH] tmpfs: generate random sb->s_uuid
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Fri, 5 May 2017 03:01:26 -0700
Cc: Miklos Szeredi <miklos@xxxxxxxxxx>, Al Viro <viro@xxxxxxxxxxxxxxxxxx>, linux-unionfs@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, Hugh Dickins <hughd@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
In-reply-to: <1493977468-21143-1-git-send-email-amir73il@gmail.com>
User-agent: Mutt/1.8.0 (2017-02-23)

On Fri, May 05, 2017 at 12:44:28PM +0300, Amir Goldstein wrote:
> This is used by overlayfs to encode intrasystem unique file handles.

I think generate_random_uuid is the wrong interface to spread.
The right one would be uuid_be_gen, although I'll still need
to audit why one uses get_random_bytes and the other prandom_bytes.

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