Avoid taking inode_hash_lock on pipes and sockets
Mount lock scalability for file systems that don't have a mount point (e.g. sockfs and pipefs)
slub: Push irq disable into allocate_slab()
slub: Do not use frozen page flag but a bit in the page counters
slub: Move page->frozen handling near where the page->freelist handling occurs
slub: explicit list_lock taking