From: Andrew Morton <akpm@linux-foundation.org>

allnoconfig:

mm/mincore.c: In function 'do_mincore':
mm/mincore.c:122: warning: unused variable 'entry'

Yet another entry in the why-macros-are-wrong encyclopedia.

Cc: Christoph Lameter <clameter@engr.sgi.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/swapops.h |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff -puN include/linux/swapops.h~mincore-warning-fix include/linux/swapops.h
--- a/include/linux/swapops.h~mincore-warning-fix
+++ a/include/linux/swapops.h
@@ -108,7 +108,10 @@ extern void migration_entry_wait(struct 
 #else
 
 #define make_migration_entry(page, write) swp_entry(0, 0)
-#define is_migration_entry(swp) 0
+static inline int is_migration_entry(swp_entry_t swp)
+{
+	return 0;
+}
 #define migration_entry_to_page(swp) NULL
 static inline void make_migration_entry_read(swp_entry_t *entryp) { }
 static inline void migration_entry_wait(struct mm_struct *mm, pmd_t *pmd,
_