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From: David Howells <dhowells@redhat.com>
In-Reply-To: <20071013181137.GA9051@thunk.org>
References: <20071013181137.GA9051@thunk.org> <20071012160519.15119.69608.stgit@warthog.procyon.org.uk>
To: Theodore Tso <tytso@mit.edu>
Cc: dhowells@redhat.com, viro@ftp.linux.org.uk, kwc@citi.umich.edu,
       Trond.Myklebust@netapp.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 00/52] Introduce credential record
Date: Sat, 13 Oct 2007 22:46:15 +0100
Message-ID: <22130.1192311975@redhat.com>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 761
Lines: 19

Theodore Tso <tytso@mit.edu> wrote:

>    I'm going to ask a stupid question, and I probably missed something
> in the 52 patches, but....  I see how the credential is used to do
> access checks, but why does the credentials record need to passed all
> the way into block allocator?  What is it used for there?

Ext2, 3 & 4 use it to determine whether someone has the right to use the
reserved space according to whether their UID/GID match those in the
superblock.

See ext3_has_free_blocks() for an example.

David
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