Re: [Patch] Btrfs: use BTRFS_VOL_NAME_MAX for structbtrfs_ioctl_vol_args

From: Chris Mason
Date: Wed Jan 21 2009 - 10:05:46 EST

On Mon, 2009-01-19 at 21:12 +0800, AmÃrico 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, AmÃrico 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?


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