mm cleanup: shmem_file_setup: 'char *' -> 'const char *' for name argument

As function shmem_file_setup does not modify/allocate/free/pass given
filename - mark it as const.

Signed-off-by: Sergei Trofimovich <slyfox@inbox.ru>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/mm.h b/include/linux/mm.h
index f0473a8..d88d6fc 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -724,7 +724,7 @@
 	return 0;
 }
 #endif
-struct file *shmem_file_setup(char *name, loff_t size, unsigned long flags);
+struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags);
 
 int shmem_zero_setup(struct vm_area_struct *);