linux-kernel - Re: [GIT PULL] overlayfs update for 4.14

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20170917212705.GB17782@dastard>
Date:   Mon, 18 Sep 2017 07:27:05 +1000
From:   Dave Chinner <david@...morbit.com>
To:     Miklos Szeredi <miklos@...redi.hu>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        "linux-unionfs@...r.kernel.org" <linux-unionfs@...r.kernel.org>
Subject: Re: [GIT PULL] overlayfs update for 4.14

On Fri, Sep 15, 2017 at 10:06:24AM +0200, Miklos Szeredi wrote:
> or some way to have a shared page
> cache that's breakable on copy up, which does not look trivial at all.

If we get that, it will come through overlay using reflink for
copyup and filesystems doing the page cache sharing of multiply
referenced data blocks. I don't see overlay being involved in this
functionality at all....

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com