Re: [PATCH 1/3] mm: tracking shared dirty pages

[Christoph Lameter]

On Thu, 25 May 2006, Peter Zijlstra wrote:

>  - rebased on top of David Howells' page_mkwrite() patch.

I am a bit confused about the need for Davids patch. set_page_dirty() is 
already a notification that a page is to be dirtied. Why do we need it 
twice? set_page_dirty could return an error code and the file system can 
use the set_page_dirty() hook to get its notification. What we would need 
to do is to make sure that set_page_dirty can sleep.

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