From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH v8 00/41] Richacls
Date: Wed, 7 Oct 2015 00:50:54 -0700
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Cc: Andreas Gruenbacher <agruenba@redhat.com>,
	Christoph Hellwig <hch@infradead.org>,
	Austin S Hemmelgarn <ahferroin7@gmail.com>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Theodore Ts'o <tytso@mit.edu>,
	"J. Bruce Fields" <bfields@fieldses.org>,
	Jeff Layton <jlayton@poochiereds.net>,
	Trond Myklebust <trond.myklebust@primarydata.com>,
	Anna Schumaker <anna.schumaker@netapp.com>,
	linux-ext4 <linux-ext4@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	linux-nfs@vger.kernel.org, Linux API <linux-api@vger.kernel.org>
To: Andreas Dilger <adilger@dilger.ca>
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On Tue, Oct 06, 2015 at 02:26:09PM -0600, Andreas Dilger wrote:
> And any disk filesystems that have their own non-POSIX ACLs, such as HFS, NTFS, ZFS would presumably also need to map the in-kernel Richacl format to their on-disk format.

No, we did this mistake with Posix ACLs, and we're not going to repeat
it here.  Filesystems with their own slightly different ACLs must not
reuse the interface.