Re: page->pte_head, Was:[URGENT ASSISTANCE REQUESTED] production machines dying

Benjamin C.R. LaHaise (
Tue, 25 Nov 1997 18:21:11 -0500 (EST)

On Tue, 25 Nov 1997, Dr. Werner Fink wrote:
> ... combining the two approaches (defragmentation and preemptive anonymous
> page ageing) would be a win.

An interesting side effect of my mechanism (swapping now walked the
page_map) is that it did reduce fragmentation to some degree - pages would
tend to be swapped in contiguous chunks, rather it was just a bit more
likely than kswapd's freeing of randomly allocated pages.