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    SubjectRe: [PATCH 3/3] bdi: Initialize noop_backing_dev_info properly
    On Tue 27-07-10 13:09:39, Christoph Hellwig wrote:
    > On Tue, Jul 27, 2010 at 07:05:01PM +0200, Jan Kara wrote:
    > > Properly initialize this backing dev info so that writeback code does not
    > > barf when getting to it e.g. via sb->s_bdi.
    >
    > When do we actually get it in s_bdi? That should never happen.
    Well, set_anon_super() sets it. I'm not sure if filesystems using this
    are supposed to reset it to something else or not... It's a bit messy and
    nowhere is actually written how things should be. One can just guess ;)


    Honza
    --
    Jan Kara <jack@suse.cz>
    SUSE Labs, CR


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