Re: [patch] mm: close page_mkwrite races

Trond Myklebust
2009-04-01T23:33:14Z

On Wed, 2009-04-01 at 16:02 -0700, Andrew Morton wrote:
> What is "the problem"? Can we get "the problem"'s description included
> in the changelog?
>
> The patch is fairly ugly, somewhat costly and makes things (even) more
> complex. Sigh.

The problem is that currently, pages can be marked as dirty after they
have been written out, or even during writeout.

IOW: the filesystem and the mm no longer agree on the state of the page,
which again triggers issues such as
http://bugzilla.kernel.org/show_bug.cgi?id=12913

Trond