On Thu, 31 May 2012 09:39:17 -0500 Nathan Zimmer <nzimmer@xxxxxxx> wrote: > When tmpfs has the memory policy interleaved it always starts allocating at each > file at node 0. When there are many small files the lower nodes fill up > disproportionately. > This patch attempts to spread out node usage by starting files at nodes other > then 0. I disturbed the addr parameter since alloc_pages_vma will only use it > when the policy is MPOL_INTERLEAVE. Random was picked over using another > variable which would require some sort of contention management. The patch title is a bit scummy ;) It describes a kernel problem, not the patch. I renamed it to "tmpfs: implement NUMA node interleaving". It looks nice and simple > Cc: stable@xxxxxxxxxxxxxxx We could probably sneak this past Greg, but should we? It's a feature and a performance enhancement. Such things are not normally added to -stable. If there were some nice performance improvements in workloads which our users care about then I guess we could backport it. But you've provided us with no measurements at all, hence no reason to backport it. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>