Before that patchset, the output of print_page_info() is [ 6155.716018] INFO: Slab 0x000000004027dd4f objects=33 used=3 fp=0x000000008cd1579c flags=0x17ffffc0010200 While after it, the output is [ 8843.757770] INFO: Slab 0x00000000f0e98335 objects=33 used=3 fp=0x00000000b643c7d8 flags=0x10200(slab|head) The new one is more friendly and human readable. Yafang Shao (2): mm, slub: use pGp to print page flags mm: introduce PAGE_FLAGS() to make output of page flags better include/linux/page-flags.h | 2 ++ mm/slub.c | 5 +++-- 2 files changed, 5 insertions(+), 2 deletions(-) -- 1.8.3.1