Re: innd mmap bug in 2.4.0-test12

[Philipp Rumpf]

On Wed, Dec 27, 2000 at 03:41:04PM -0800, Linus Torvalds wrote:
> It must be wrong.
> 
> If we have a dirty page on the LRU lists, that page _must_ have a mapping.

What about pages with a mapping but without a writepage function ? or pages
whose writepage function fails ?  The current code seems to simply put the
page onto the active list in that case, which seems just as wrong to me.

> The bug is somewhere else, and your patch is just papering it over. We
> should not have a page without a mapping on the LRU lists in the first
> place, except if the page has anonymous buffers (and such a page cannot

So is there any legal reason we could ever get to page_active ?  Removing
that code (or replacing it with BUG()) certainly would make page_launder
more readable.
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