From: David Howells Subject: Re: [PATCH] overlayfs: Warn on copy up if a process has a R/O fd open to the lower file Date: Mon, 22 Jun 2015 16:10:33 +0100 Message-ID: <28487.1434985833@warthog.procyon.org.uk> References: <4954.1432838811@warthog.procyon.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Cc: dhowells@redhat.com, miklos@szeredi.hu, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-unionfs@vger.kernel.org To: viro@ZenIV.linux.org.uk Return-path: In-Reply-To: <4954.1432838811@warthog.procyon.org.uk> Content-ID: <28486.1434985833.1@warthog.procyon.org.uk> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Hi Al, > Print a warning when overlayfs copies up a file if the process that triggered > the copy up has a R/O fd open to the lower file being copied up. Can you take this? David