Re: accessed/dirty bit handler tuning

From: Christoph Lameter <clameter_at_sgi.com>
Date: 2006-04-04 04:27:50
On Mon, 3 Apr 2006, Zoltan Menyhart wrote:

> It is very much curious having so few dirty and i-access traps...

The dirty bit handler is only used for sharable writable mappings. There 
are only very few pieces of software using such mappings. The kernel 
usually attempts to prepopulate ptes with bits set so that the dirty fault 
is avoided. F.e. a no page fault attempted for a write will install a 
dirty pte.


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Received on Tue Apr 04 04:28:38 2006

This archive was generated by hypermail 2.1.8 : 2006-04-04 04:28:46 EST