make swap_pte_to_pagemap_entry() static

Make the needlessly global swap_pte_to_pagemap_entry() static.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Acked-by: NMatt Mackall <mpm@selenic.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

fs/proc/task_mmu.c

@@ -579,7 +579,7 @@ static int pagemap_pte_hole(unsigned long start, unsigned long end,
 	return err;
 }
 
-u64 swap_pte_to_pagemap_entry(pte_t pte)
+static u64 swap_pte_to_pagemap_entry(pte_t pte)
 {
 	swp_entry_t e = pte_to_swp_entry(pte);
 	return swp_type(e) | (swp_offset(e) << MAX_SWAPFILES_SHIFT);