From: Chris Mason <chris.mason@oracle.com>
To: "Américo Wang" <xiyou.wangcong@gmail.com>
Cc: Josef Bacik <jbacik@redhat.com>,
linux-btrfs@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@osdl.org>
Subject: Re: [Patch] Btrfs: use BTRFS_VOL_NAME_MAX for struct btrfs_ioctl_vol_args
Date: Wed, 21 Jan 2009 10:04:08 -0500 [thread overview]
Message-ID: <1232550248.17244.7.camel@think.oraclecorp.com> (raw)
In-Reply-To: <20090119131224.GC7424@hack.private>
On Mon, 2009-01-19 at 21:12 +0800, Am=C3=A9rico Wang wrote:
> On Mon, Jan 19, 2009 at 08:03:37AM -0500, Josef Bacik wrote:
> >On Mon, Jan 19, 2009 at 08:57:32PM +0800, Am=C3=A9rico Wang wrote:
> >>=20
> >> I found userspace tool, btrfsctl, uses BTRFS_VOL_NAME_MAX, and
> >> it also looks that this one is more proper.
> >>=20
> >> Kill BTRFS_PATH_NAME_MAX since no one will use it.
> >>=20
> >
> >Nope, BTRFS_PATH_NAME_MAX is specifically used for the ioctl stuff, =
makes the
> >arguments 4k aligned, this patch is incorrect. Thanks,
>=20
> Ok, then what is BTRFS_VOL_NAME_MAX? :)
Right now it is only used in the progs. The disk format doesn't really
have a max there, it is just to keep names usable. But, we should add =
a
check in the kernel ioctl side, are you interested in sending a patch
for it?
-chris
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WARNING: multiple messages have this Message-ID (diff)
From: Chris Mason <chris.mason@oracle.com>
To: "Américo Wang" <xiyou.wangcong@gmail.com>
Cc: Josef Bacik <jbacik@redhat.com>,
linux-btrfs@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@osdl.org>
Subject: Re: [Patch] Btrfs: use BTRFS_VOL_NAME_MAX for struct btrfs_ioctl_vol_args
Date: Wed, 21 Jan 2009 10:04:08 -0500 [thread overview]
Message-ID: <1232550248.17244.7.camel@think.oraclecorp.com> (raw)
In-Reply-To: <20090119131224.GC7424@hack.private>
On Mon, 2009-01-19 at 21:12 +0800, Américo Wang wrote:
> On Mon, Jan 19, 2009 at 08:03:37AM -0500, Josef Bacik wrote:
> >On Mon, Jan 19, 2009 at 08:57:32PM +0800, Américo Wang wrote:
> >>
> >> I found userspace tool, btrfsctl, uses BTRFS_VOL_NAME_MAX, and
> >> it also looks that this one is more proper.
> >>
> >> Kill BTRFS_PATH_NAME_MAX since no one will use it.
> >>
> >
> >Nope, BTRFS_PATH_NAME_MAX is specifically used for the ioctl stuff, makes the
> >arguments 4k aligned, this patch is incorrect. Thanks,
>
> Ok, then what is BTRFS_VOL_NAME_MAX? :)
Right now it is only used in the progs. The disk format doesn't really
have a max there, it is just to keep names usable. But, we should add a
check in the kernel ioctl side, are you interested in sending a patch
for it?
-chris
next prev parent reply other threads:[~2009-01-21 15:04 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-19 12:57 [Patch] Btrfs: use BTRFS_VOL_NAME_MAX for struct btrfs_ioctl_vol_args Américo Wang
2009-01-19 13:03 ` Josef Bacik
2009-01-19 13:03 ` Josef Bacik
2009-01-19 13:12 ` Américo Wang
2009-01-19 13:12 ` Américo Wang
2009-01-21 15:04 ` Chris Mason [this message]
2009-01-21 15:04 ` Chris Mason
2009-01-22 16:11 ` Américo Wang
2009-01-22 16:11 ` Américo Wang
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