Re: [PATCH 13/13] xfs: convert xfs_sysfs attrs to use ->seq_show

[Christoph Hellwig]

On Tue, Sep 14, 2021 at 05:28:08PM +0200, Greg Kroah-Hartman wrote:
> We can "force" it by not allowing buffers to be bigger than that, which
> is what the code has always done.  I think we want to keep that for now
> and not add the new seq_show api.

The buffer already is not larger than that.  The problem is that
sysfs_emit does not actually work for the non-trivial attributes,
which generally are the source of bugs.