This is version 3 of the page cache control patches From: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx> This series has three patches, the first controls the amount of unmapped page cache usage via a boot parameter and sysctl. The second patch controls page and slab cache via the balloon driver. Both the patches make heavy use of the zone_reclaim() functionality already present in the kernel. The last patch in the series is against QEmu to make the ballooning hint optional. V2 was posted a long time back (see http://lwn.net/Articles/391293/) One of the review suggestions was to make the hint optional (discussed in the community call as well). I'd appreciate any test results with the patches. TODO 1. libvirt exploits for optional hint page-cache-control balloon-page-cache provide-memory-hint-during-ballooning --- b/balloon.c | 18 +++- b/balloon.h | 4 b/drivers/virtio/virtio_balloon.c | 17 +++ b/hmp-commands.hx | 7 + b/hw/virtio-balloon.c | 14 ++- b/hw/virtio-balloon.h | 3 b/include/linux/gfp.h | 8 + b/include/linux/mmzone.h | 2 b/include/linux/swap.h | 3 b/include/linux/virtio_balloon.h | 3 b/mm/page_alloc.c | 9 +- b/mm/vmscan.c | 162 ++++++++++++++++++++++++++++---------- b/qmp-commands.hx | 7 - include/linux/swap.h | 9 -- mm/page_alloc.c | 3 mm/vmscan.c | 2 16 files changed, 202 insertions(+), 69 deletions(-) -- Three Cheers, Balbir -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>