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SubjectRe: locking user memory and kiobuf
> 1. From what I've read in the archives, it seems that locking user
> memory from a driver isn't supported in current releases of the Linux
> kernel (2.2.xx). Is that correct?

Indeed, but mapping kernel provided pages into a user app is.

> 2. As I understand, there's a new "kiobuf mechanism" being added in
> 2.3.xx .
> Does that provide a solution to this particular issue?

It provides the basis. A patch providing this functionality is available
as a 2.2 add on and is in 2.2. ac

> 3. Alternatively, can I directly manipulate the PG_locked flag for the
> pages in question?

Unknown. 8)

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