linux-ext4 - RE: [PATCH v23 08/22] richacl: Compute maximum file masks from an acl

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Date:	Wed, 13 Jul 2016 12:38:50 -0700
From:	"Frank Filz" <ffilzlnx@...dspring.com>
To:	"'Andreas Gruenbacher'" <agruenba@...hat.com>
Cc:	"'Jeff Layton'" <jlayton@...hat.com>,
	"'Alexander Viro'" <viro@...iv.linux.org.uk>,
	"'Christoph Hellwig'" <hch@...radead.org>,
	"'Theodore Ts'o'" <tytso@....edu>,
	"'Andreas Dilger'" <adilger.kernel@...ger.ca>,
	"'J. Bruce Fields'" <bfields@...ldses.org>,
	"'Trond Myklebust'" <trond.myklebust@...marydata.com>,
	"'Anna Schumaker'" <anna.schumaker@...app.com>,
	"'Dave Chinner'" <david@...morbit.com>,
	"'linux-ext4'" <linux-ext4@...r.kernel.org>,
	"'XFS Developers'" <xfs@....sgi.com>,
	"'LKML'" <linux-kernel@...r.kernel.org>,
	"'linux-fsdevel'" <linux-fsdevel@...r.kernel.org>,
	"'Linux NFS Mailing List'" <linux-nfs@...r.kernel.org>,
	<linux-cifs@...r.kernel.org>,
	"'Linux API'" <linux-api@...r.kernel.org>
Subject: RE: [PATCH v23 08/22] richacl: Compute maximum file masks from an acl

> > Hmm, but does that result in examining the whole ACL for most access
> checks, at least for files where most of the accesses are by the owner, or a
> member of a specific group (with perhaps a ton of special case users added
> on the end)?
> 
> I don't understand -- what does this algorithm have to do with access checks?

Oh, sorry, misread the patch... got caught up looking at a tree and not seeing the forest...

Frank



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