On Mon, Apr 18, 2005 at 10:07:12PM +0200, Bernhard Fischer wrote:
> On Mon, Apr 18, 2005 at 09:40:40PM +0200, Arjan van de Ven wrote:
> >On Mon, 2005-04-18 at 11:25 -0500, Timur Tabi wrote:
> >> Arjan van de Ven wrote:
> >>
> >> > this is a myth; linux is free to move the page about in physical memory
> >> > even if it's mlock()ed!!
> darn, yes, this is true.
> I know people who introduced
> #define VM_RESERVED 0x00080000 /* Don't unmap it from swap_out
> */
Someone (aka Tospin, infinicon, and Amasso) should probably post a patch
adding '#define VM_REGISTERD 0x01000000', and some extensions to
something like 'madvise' to set pages to be registered.
My preference is said patch will also allow a way for the kernel to
reclaim registered memory from an application under memory pressure.
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