Revert "mm: sl[au]b: add knowledge of PFMEMALLOC reserve pages"

This reverts commit 2fcdfd0d50910a8bd09ab15f92fb5c68b42538f9.
Revert "slub: pass page to node_match() instead of kmem_cache_cpu structure"

This reverts commit 0fad35a5571e68d4994902f4a41efa9ad55e7a07.
Revert "slub: use __SetPageSlab function to set PG_slab flag"

This reverts commit 81c258b93c3ddfa603ed184108f4f7d3e329e306.