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 spreads out node usage by starting files at nodes other then 0. The tmpfs superblock grants an offset for each inode as they are created. Each then uses that offset to proved a prefered first node for its interleave in the shmem_interleave. v2: passed preferred node via addr. v3: using current->cpuset_mem_spread_rotor instead of random_node. v4: Switching the rotor and attempting to provide an interleave function. Also splitting the patch into two sections. v5: Corrected unsigned to long. Nathan Zimmer (2): shmem: provide vm_ops when also providing a mem policy tmpfs: interleave the starting node of /dev/shmem include/linux/mm.h | 7 +++++++ include/linux/shmem_fs.h | 3 +++ mm/mempolicy.c | 4 ++++ mm/shmem.c | 35 ++++++++++++++++++++++++++++++++--- 4 files changed, 46 insertions(+), 3 deletions(-) -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>