Re: [RFC PATCH 20/26] UBIFS: add VFS operations

[Adrian Hunter]

Artem Bityutskiy wrote:
> Pekka Enberg wrote:
> > >  Yeah, this is also a guarding thing. When a dirty page is released
> > >  the budget which was allocated for it has to be freed. If this function
> > >  is called, then the budget was not freed, which must never happen.
> >
> > So what guarantees that no one calls invalidate_complete_page() or
> > fallback_migrate_page(), for example?
>
> At the first glance it looks like it might be called, but for clean pages,
> which is not the problem, but there is this assert which may give fake
> alarm. Need to look closer at this. Thanks for the note.

Dirty pages are not released.

In UBIFS, clean pages do not have PagePrivate(page) set and so releasepage() is not called.
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