staging/lustre: replace num_physpages with totalram_pages

The global variable num_physpages is going away. Replace it
with totalram_pages.

Cc: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/staging/lustre/include/linux/libcfs/linux/linux-mem.h
Simple merge

diff --cc drivers/staging/lustre/lustre/ldlm/ldlm_lib.c
Simple merge

diff --cc drivers/staging/lustre/lustre/libcfs/linux/linux-tracefile.c
Simple merge

diff --cc drivers/staging/lustre/lustre/llite/lproc_llite.c
Simple merge

diff --cc drivers/staging/lustre/lustre/obdclass/class_obd.c
Simple merge

diff --cc drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c
Simple merge

diff --cc drivers/staging/lustre/lustre/obdclass/lu_object.c
Simple merge

diff --cc drivers/staging/lustre/lustre/osc/lproc_osc.c
Simple merge

diff --cc drivers/staging/lustre/lustre/ptlrpc/lproc_ptlrpc.c
Simple merge

diff --cc drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c
Simple merge