[PATCH] shmem and simple const super_operations

shmem's super_operations were missed from the recent const-ification;
and simple_fill_super()'s, which can share with get_sb_pseudo()'s.

Signed-off-by: Hugh Dickins <[e-mail]>
Acked-by: Josef 'Jeff' Sipek <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

fs/libfs.c

···
 	.lookup		= simple_lookup,
 };
 
+static const struct super_operations simple_super_operations = {
+	.statfs		= simple_statfs,
+};
+
 /*
  * Common helper for pseudo-filesystems (sockfs, pipefs, bdev - stuff that
  * will never be mountable)
···
 	struct vfsmount *mnt)
 {
 	struct super_block *s = sget(fs_type, NULL, set_anon_super, NULL);
-	static const struct super_operations default_ops = {.statfs = simple_statfs};
 	struct dentry *dentry;
 	struct inode *root;
 	struct qstr d_name = {.name = name, .len = strlen(name)};
···
 	s->s_blocksize = 1024;
 	s->s_blocksize_bits = 10;
 	s->s_magic = magic;
-	s->s_op = ops ? ops : &default_ops;
+	s->s_op = ops ? ops : &simple_super_operations;
 	s->s_time_gran = 1;
 	root = new_inode(s);
 	if (!root)
···
 
 int simple_fill_super(struct super_block *s, int magic, struct tree_descr *files)
 {
-	static struct super_operations s_ops = {.statfs = simple_statfs};
 	struct inode *inode;
 	struct dentry *root;
 	struct dentry *dentry;
···
 	s->s_blocksize = PAGE_CACHE_SIZE;
 	s->s_blocksize_bits = PAGE_CACHE_SHIFT;
 	s->s_magic = magic;
-	s->s_op = &s_ops;
+	s->s_op = &simple_super_operations;
 	s->s_time_gran = 1;
 
 	inode = new_inode(s);

mm/shmem.c

···
 		vm_unacct_memory(pages * VM_ACCT(PAGE_CACHE_SIZE));
 }
 
-static struct super_operations shmem_ops;
+static const struct super_operations shmem_ops;
 static const struct address_space_operations shmem_aops;
 static const struct file_operations shmem_file_operations;
 static const struct inode_operations shmem_inode_operations;
···
 #endif
 };
 
-static struct super_operations shmem_ops = {
+static const struct super_operations shmem_ops = {
 	.alloc_inode	= shmem_alloc_inode,
 	.destroy_inode	= shmem_destroy_inode,
 #ifdef CONFIG_TMPFS