On Fri, 28 Sep 2007, Mel Gorman wrote: > > Filtering zonelists requires very frequent use of zone_idx(). This is costly > as it involves a lookup of another structure and a substraction operation. As > the zone_idx is often required, it should be quickly accessible. The node > idx could also be stored here if it was found that accessing zone->node is > significant which may be the case on workloads where nodemasks are heavily > used. > > This patch introduces a struct zoneref to store a zone pointer and a zone > index. The zonelist then consists of an array of this struct zonerefs which > are looked up as necessary. Helpers are given for accessing the zone index > as well as the node index. > > [EMAIL PROTECTED]: Suggested struct zoneref instead of embedding information > in pointers] > Signed-off-by: Mel Gorman <[EMAIL PROTECTED]> > Acked-by: Christoph Lameter <[EMAIL PROTECTED]>
OOM locking looks good, thanks. Acked-by: David Rientjes <[EMAIL PROTECTED]> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
