RE: How to read-protect a vm_area?

Benjamin C.R. LaHaise (
Fri, 20 Feb 1998 01:14:48 -0500 (EST)

On Thu, 19 Feb 1998, Noel Burton-Krahn wrote:

> Will the changes you are proposing allow me to determine the set of all
> ptes (in all tasks) which reference a page in memory?
> I am working on something like distributed shared memory where a page
> shared by many processes may be invalidated without a local process writing
> to it. To keep everything up-to-date I have to invalidate all local ptes
> which point to such a page. It sure would be nice if your changes made
> this possible.

Ummm, take a look at the code I posted last month which walks the list of
vmas on an inode - the technique is applicable to 2.0.33 as well. The
message is at:


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