ntfs3: move ntfs_xattr_handlers to .rodata

This makes it harder for accidental or malicious changes to
ntfs_xattr_handlers at runtime.

Cc: Konstantin Komarov <[e-mail]>
Cc: [e-mail]
Signed-off-by: Wedson Almeida Filho <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Christian Brauner <[e-mail]>

fs/ntfs3/ntfs_fs.h

···
 
 int ntfs_acl_chmod(struct mnt_idmap *idmap, struct dentry *dentry);
 ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
-extern const struct xattr_handler *ntfs_xattr_handlers[];
+extern const struct xattr_handler * const ntfs_xattr_handlers[];
 
 int ntfs_save_wsl_perm(struct inode *inode, __le16 *ea_size);
 void ntfs_get_wsl_perm(struct inode *inode);

fs/ntfs3/xattr.c

···
 	.list	= ntfs_xattr_user_list,
 };
 
-const struct xattr_handler *ntfs_xattr_handlers[] = {
+const struct xattr_handler * const ntfs_xattr_handlers[] = {
 	&ntfs_other_xattr_handler,
 	NULL,
 };