mm: rename confusing function names

Function nr_free_zone_pages, nr_free_buffer_pages and nr_free_pagecache_pages are horribly badly named, they count present_pages - pages_high within zones instead of free pages, so why not rename them to reasonable names, not cofusing people.

patch2 and patch3 are based on patch1. So please apply patch1 first.

Zhang Yanfei (3):
mm: rename nr_free_zone_pages to nr_free_zone_high_pages
mm: rename nr_free_buffer_pages to nr_free_buffer_high_pages
mm: rename nr_free_pagecache_pages to nr_free_pagecache_high_pages

 arch/ia64/mm/contig.c          |    3 ++-
 arch/ia64/mm/discontig.c       |    3 ++-
 drivers/mmc/card/mmc_test.c    |    4 ++--
 fs/buffer.c                    |    2 +-
 fs/nfsd/nfs4state.c            |    2 +-
 fs/nfsd/nfssvc.c               |    2 +-
 include/linux/swap.h           |    4 ++--
 mm/huge_memory.c               |    2 +-
 mm/memory_hotplug.c            |    4 ++--
 mm/page-writeback.c            |    2 +-
 mm/page_alloc.c                |   22 ++++++++++++----------
 net/9p/trans_virtio.c          |    2 +-
 net/ipv4/tcp.c                 |    4 ++--
 net/ipv4/udp.c                 |    2 +-
 net/netfilter/ipvs/ip_vs_ctl.c |    2 +-
 net/sctp/protocol.c            |    2 +-
 16 files changed, 33 insertions(+), 29 deletions(-)

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