From: Andrew Morton <akpm@osdl.org>
To: Alasdair G Kergon <agk@redhat.com>
Cc: linux-kernel@vger.kernel.org, mbroz@redhat.com
Subject: Re: [PATCH 01/15] dm: support ioctls on mapped devices
Date: Wed, 21 Jun 2006 20:52:06 -0700 [thread overview]
Message-ID: <20060621205206.35ecdbf8.akpm@osdl.org> (raw)
In-Reply-To: <20060621193121.GP4521@agk.surrey.redhat.com>
On Wed, 21 Jun 2006 20:31:21 +0100
Alasdair G Kergon <agk@redhat.com> wrote:
> From: Milan Broz <mbroz@redhat.com>
>
> Extend the core device-mapper infrastructure to accept arbitrary ioctls
> on a mapped device provided that it has exactly one target and it is
> capable of supporting ioctls.
I don't understand that. We're taking an ioctl against a dm device and
we're passing it through to an underlying device? Or something else?
Care to flesh this out a bit?
> [We can't use unlocked_ioctl because we need 'inode': 'file' might be NULL.
> Is it worth changing this?]
It _should_ be possible to use unlocked_ioctl() - unlocked_ioctl() would be
pretty useless if someone was passing it a NULL file*. More details?
next prev parent reply other threads:[~2006-06-22 3:52 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-21 19:31 [PATCH 01/15] dm: support ioctls on mapped devices Alasdair G Kergon
2006-06-22 3:52 ` Andrew Morton [this message]
2006-06-22 8:15 ` Milan Broz
2006-06-22 8:29 ` Andrew Morton
2006-06-22 15:17 ` Alasdair G Kergon
2006-06-22 16:55 ` Andrew Morton
2006-06-23 3:31 ` Kevin Corry
2006-06-23 3:49 ` Andrew Morton
2006-06-23 10:01 ` Christoph Hellwig
2006-06-23 10:00 ` Christoph Hellwig
[not found] ` <20060623032108.28debec2.akpm@osdl.org>
2006-06-23 13:13 ` Milan Broz
2006-06-22 13:21 ` Alasdair G Kergon
2006-07-05 3:22 ` Arnd Bergmann
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