Re: [VM PATCH 2.6.6-rc3-bk5] Dirty balancing in the presence ofmapped pages

From: Andrew Morton
Date: Tue May 04 2004 - 20:03:21 EST


Shantanu Goel <sgoel01@xxxxxxxxx> wrote:
>
> Presently the kernel does not collection information
> about the percentage of memory that processes have
> dirtied via mmap until reclamation. Nothing analogous
> to balance_dirty_pages() is being done for mmap'ed
> pages. The attached patch adds collection of dirty
> page information during kswapd() scans and initiation
> of background writeback by waking up bdflush.

And what were the effects of this patch?

Did you consider propagating the pte dirtiness into the pageframe within
page_referenced(), while we're there?
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