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Message-ID: <ZKbRrziFf4tf09vo@infradead.org>
Date: Thu, 6 Jul 2023 07:37:35 -0700
From: Christoph Hellwig <hch@...radead.org>
To: Christian Brauner <brauner@...nel.org>
Cc: Hou Tao <houtao@...weicloud.com>,
Alexey Gladkov <legion@...nel.org>, bpf@...r.kernel.org,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
Alexander Viro <viro@...iv.linux.org.uk>,
Alexei Starovoitov <alexei.starovoitov@...il.com>
Subject: Re: [PATCH v1] fs: Add kfuncs to handle idmapped mounts
On Tue, Jul 04, 2023 at 03:01:21PM +0200, Christian Brauner wrote:
> That's too much stability for my taste for these helpers. The helpers
> here exposed have been modified multiple times and once we wean off
> idmapped mounts from user namespaces completely they will change again.
> So I'm fine if they're traceable but not as kfuncs with any - even
> minimal - stability guarantees.
I fully agree. I also don't think any eBPF program has any business
looking at idmapping.
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