linux-kernel - RE: [PATCH v2 04/17] ceph: fix compat_ioctl for ceph_dir

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Date:   Wed, 12 Sep 2018 16:12:17 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Arnd Bergmann' <arnd@...db.de>,
        "viro@...iv.linux.org.uk" <viro@...iv.linux.org.uk>
CC:     "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "Yan, Zheng" <zyan@...hat.com>, Sage Weil <sage@...hat.com>,
        Ilya Dryomov <idryomov@...il.com>,
        Chengguang Xu <cgxu519@....com>,
        "ceph-devel@...r.kernel.org" <ceph-devel@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2 04/17] ceph: fix compat_ioctl for ceph_dir_operations

From: Arnd Bergmann
> Sent: 12 September 2018 16:01
> 
> The ceph_ioctl function is used both for files and directories, but only
> the files support doing that in 32-bit compat mode.
> 
> For consistency, add the same compat handler to the dir operations
> as well.

Have you verified that all the relevant ioctl buffer structures are
exactly the same for 32bit and 64bit applications?

	David

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