This is in particular useful for large I/Os because it will allow > 100 allocs from the SLUB fast path without having to go to the page allocator. Signed-off-by: Christoph Lameter --- fs/buffer.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) Index: linux-2.6/fs/buffer.c =================================================================== --- linux-2.6.orig/fs/buffer.c 2007-09-18 15:44:37.000000000 -0700 +++ linux-2.6/fs/buffer.c 2007-09-18 15:44:51.000000000 -0700 @@ -3008,7 +3008,8 @@ void __init buffer_init(void) int nrpages; bh_cachep = KMEM_CACHE(buffer_head, - SLAB_RECLAIM_ACCOUNT|SLAB_PANIC|SLAB_MEM_SPREAD); + SLAB_RECLAIM_ACCOUNT|SLAB_PANIC|SLAB_MEM_SPREAD| + SLAB_VFALLBACK); /* * Limit the bh occupancy to 10% of ZONE_NORMAL -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/