constify dentry_operations: misc filesystems

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c
index a1f1ef3..33e047b 100644
--- a/fs/sysv/namei.c
+++ b/fs/sysv/namei.c
@@ -38,7 +38,7 @@
 	return 0;
 }
 
-struct dentry_operations sysv_dentry_operations = {
+const struct dentry_operations sysv_dentry_operations = {
 	.d_hash		= sysv_hash,
 };
 
diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h
index 38ebe3f..5784a31 100644
--- a/fs/sysv/sysv.h
+++ b/fs/sysv/sysv.h
@@ -170,7 +170,7 @@
 extern const struct file_operations sysv_dir_operations;
 extern const struct address_space_operations sysv_aops;
 extern const struct super_operations sysv_sops;
-extern struct dentry_operations sysv_dentry_operations;
+extern const struct dentry_operations sysv_dentry_operations;
 
 
 enum {