Make "static const" initializer to zero explicit, since truly

constant values should not end up in the BSS.

We're better off having the compiler put it in the .rodata
section (which it will, thanks to the initializer and the
"const"), since that will result in it being nicely cacheable
in shared SMP caches.

mm/shmem.c

@@ -296,7 +296,7 @@ static swp_entry_t *shmem_swp_alloc(struct shmem_inode_info *info, unsigned long
 	struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
 	struct page *page = NULL;
 	swp_entry_t *entry;
-	static const swp_entry_t unswapped;
+	static const swp_entry_t unswapped = { 0 };
 
 	if (sgp != SGP_WRITE &&
 	    ((loff_t) index << PAGE_CACHE_SHIFT) >= i_size_read(inode))