On 07/02/2012 03:26 PM, Nathan Zimmer 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 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. Cc: Christoph Lameter <cl@xxxxxxxxx> Cc: Nick Piggin <npiggin@xxxxxxxxx> Cc: Hugh Dickins <hughd@xxxxxxxxxx> Cc: Lee Schermerhorn <lee.schermerhorn@xxxxxx> Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Cc: Rik van Riel <riel@xxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Nathan T Zimmer <nzimmer@xxxxxxx> --- include/linux/mm.h | 6 ++++++ include/linux/shmem_fs.h | 2 ++ mm/mempolicy.c | 4 ++++ mm/shmem.c | 33 ++++++++++++++++++++++++++++++--- 4 files changed, 42 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>
I apologize, it seems I have sent the patch before running checkpatch. -- 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>