Mm and physical page sharing

NTFSD
1

Hi,

Does the windows Mm share physical pages between image and data (for
read) mappings for the same file? I mean if a file has been mapped for
execution and has also been mapped for reading by Cc, I understand
windows creates 2 different mappings. However, can the Mm share some
of the physical pages between these two mappings if the physical page
has not been modified?

Thanks

2

It could, but it does not. The disjoint sections represent separate
control areas (“dt nt!_CONTROL_AREA” in WinDBG) and thus separate
physical pages.

Regards,

Tony

Tony Mason
Consulting Partner
OSR Open Systems Resources, Inc.
http://www.osr.com

-----Original Message-----
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[mailto:xxxxx@lists.osr.com] On Behalf Of foo bar
Sent: Thursday, February 10, 2005 1:16 PM
To: ntfsd redirect
Subject: [ntfsd] Mm and physical page sharing

Hi,

Does the windows Mm share physical pages between image and data (for
read) mappings for the same file? I mean if a file has been mapped for
execution and has also been mapped for reading by Cc, I understand
windows creates 2 different mappings. However, can the Mm share some
of the physical pages between these two mappings if the physical page
has not been modified?

Thanks

Questions? First check the IFS FAQ at
https://www.osronline.com/article.cfm?id=17

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