Re: limit on number of kmapped pages

From: Eric W. Biederman (ebiederm@xmission.com)
Date: Wed Jan 24 2001 - 09:27:05 EST


David Wragg <dpw@doc.ic.ac.uk> writes:

> I'd still like to know what the basis for the current kmap limit
> setting is.

Mostly at one point kmap_atomic was all there was. It was only the
difficulty of implementing copy_from_user with kmap_atomic that convinced
people we needed something more. So actually if we can kmap several
megabyte at once the kmap limit is quite high.

Eric

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Wed Jan 31 2001 - 21:00:18 EST