staging: lustre: libcfs: move NUM_CACHEPAGES to libcfs_prim.h

We don't really need linux specific headers anymore so move
NUM_CACHEPAGES macro to libcfs_prim.h.
Signed-off-by: James Simmons <uja.ornl@gmail.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6245
Reviewed-on: http://review.whamcloud.com/13841Reviewed-by: frank zago <fzago@cray.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/include/linux/libcfs/libcfs_prim.h

@@ -43,6 +43,14 @@
 /*
  * Memory
  */
+#if BITS_PER_LONG == 32
+/* limit to lowmem on 32-bit systems */
+#define NUM_CACHEPAGES \
+	min(totalram_pages, 1UL << (30 - PAGE_CACHE_SHIFT) * 3 / 4)
+#else
+#define NUM_CACHEPAGES totalram_pages
+#endif
+
 static inline unsigned int memory_pressure_get(void)
 {
 	return current->flags & PF_MEMALLOC;

drivers/staging/lustre/include/linux/libcfs/linux/linux-mem.h

@@ -57,12 +57,4 @@
 #include "../libcfs_cpu.h"
 #endif
 
-#if BITS_PER_LONG == 32
-/* limit to lowmem on 32-bit systems */
-#define NUM_CACHEPAGES \
-	min(totalram_pages, 1UL << (30 - PAGE_CACHE_SHIFT) * 3 / 4)
-#else
-#define NUM_CACHEPAGES totalram_pages
-#endif
-
 #endif /* __LINUX_CFS_MEM_H__ */