reiserfs: constify xattr_handler

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c
index e7cc00e..8c4cf27 100644
--- a/fs/reiserfs/xattr.c
+++ b/fs/reiserfs/xattr.c
@@ -723,11 +723,11 @@
 			(handler) = *(handlers)++)
 
 /* This is the implementation for the xattr plugin infrastructure */
-static inline struct xattr_handler *
-find_xattr_handler_prefix(struct xattr_handler **handlers,
+static inline const struct xattr_handler *
+find_xattr_handler_prefix(const struct xattr_handler **handlers,
 			   const char *name)
 {
-	struct xattr_handler *xah;
+	const struct xattr_handler *xah;
 
 	if (!handlers)
 		return NULL;
@@ -748,7 +748,7 @@
 reiserfs_getxattr(struct dentry * dentry, const char *name, void *buffer,
 		  size_t size)
 {
-	struct xattr_handler *handler;
+	const struct xattr_handler *handler;
 
 	handler = find_xattr_handler_prefix(dentry->d_sb->s_xattr, name);
 
@@ -767,7 +767,7 @@
 reiserfs_setxattr(struct dentry *dentry, const char *name, const void *value,
 		  size_t size, int flags)
 {
-	struct xattr_handler *handler;
+	const struct xattr_handler *handler;
 
 	handler = find_xattr_handler_prefix(dentry->d_sb->s_xattr, name);
 
@@ -784,7 +784,7 @@
  */
 int reiserfs_removexattr(struct dentry *dentry, const char *name)
 {
-	struct xattr_handler *handler;
+	const struct xattr_handler *handler;
 	handler = find_xattr_handler_prefix(dentry->d_sb->s_xattr, name);
 
 	if (!handler || get_inode_sd_version(dentry->d_inode) == STAT_DATA_V1)
@@ -807,7 +807,7 @@
 	size_t size;
 	if (name[0] != '.' ||
 	    (namelen != 1 && (name[1] != '.' || namelen != 2))) {
-		struct xattr_handler *handler;
+		const struct xattr_handler *handler;
 		handler = find_xattr_handler_prefix(b->dentry->d_sb->s_xattr,
 						    name);
 		if (!handler)	/* Unsupported xattr name */
@@ -920,7 +920,7 @@
 #endif
 
 /* Actual operations that are exported to VFS-land */
-struct xattr_handler *reiserfs_xattr_handlers[] = {
+const struct xattr_handler *reiserfs_xattr_handlers[] = {
 #ifdef CONFIG_REISERFS_FS_XATTR
 	&reiserfs_xattr_user_handler,
 	&reiserfs_xattr_trusted_handler,