ceph: remove unused vxattr length helpers

ceph_listxattr() now calculates the length of vxattrs dynamically, so
these helpers, which incorrectly ignore vxattr.exists_cb(), can be
removed.
Signed-off-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

fs/ceph/super.c

@@ -1161,17 +1161,15 @@ static int __init init_ceph(void)
 		goto out;
 
 	ceph_flock_init();
-	ceph_xattr_init();
 	ret = register_filesystem(&ceph_fs_type);
 	if (ret)
-		goto out_xattr;
+		goto out_caches;
 
 	pr_info("loaded (mds proto %d)\n", CEPH_MDSC_PROTOCOL);
 
 	return 0;
 
-out_xattr:
-	ceph_xattr_exit();
+out_caches:
 	destroy_caches();
 out:
 	return ret;
@@ -1181,7 +1179,6 @@ static void __exit exit_ceph(void)
 {
 	dout("exit_ceph\n");
 	unregister_filesystem(&ceph_fs_type);
-	ceph_xattr_exit();
 	destroy_caches();
 }
 

fs/ceph/super.h

@@ -922,8 +922,6 @@ ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t);
 extern ssize_t ceph_listxattr(struct dentry *, char *, size_t);
 extern void __ceph_build_xattrs_blob(struct ceph_inode_info *ci);
 extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci);
-extern void __init ceph_xattr_init(void);
-extern void ceph_xattr_exit(void);
 extern const struct xattr_handler *ceph_xattr_handlers[];
 
 #ifdef CONFIG_SECURITY

fs/ceph/xattr.c

@@ -363,7 +363,6 @@ static struct ceph_vxattr ceph_dir_vxattrs[] = {
 	},
 	{ .name = NULL, 0 }	/* Required table terminator */
 };
-static size_t ceph_dir_vxattrs_name_size;	/* total size of all names */
 
 /* files */
 
@@ -389,7 +388,6 @@ static struct ceph_vxattr ceph_file_vxattrs[] = {
 	},
 	{ .name = NULL, 0 }	/* Required table terminator */
 };
-static size_t ceph_file_vxattrs_name_size;	/* total size of all names */
 
 static struct ceph_vxattr *ceph_inode_vxattrs(struct inode *inode)
 {
@@ -400,47 +398,6 @@ static struct ceph_vxattr *ceph_inode_vxattrs(struct inode *inode)
 	return NULL;
 }
 
-static size_t ceph_vxattrs_name_size(struct ceph_vxattr *vxattrs)
-{
-	if (vxattrs == ceph_dir_vxattrs)
-		return ceph_dir_vxattrs_name_size;
-	if (vxattrs == ceph_file_vxattrs)
-		return ceph_file_vxattrs_name_size;
-	BUG_ON(vxattrs);
-	return 0;
-}
-
-/*
- * Compute the aggregate size (including terminating '\0') of all
- * virtual extended attribute names in the given vxattr table.
- */
-static size_t __init vxattrs_name_size(struct ceph_vxattr *vxattrs)
-{
-	struct ceph_vxattr *vxattr;
-	size_t size = 0;
-
-	for (vxattr = vxattrs; vxattr->name; vxattr++) {
-		if (!(vxattr->flags & VXATTR_FLAG_HIDDEN))
-			size += vxattr->name_size;
-	}
-
-	return size;
-}
-
-/* Routines called at initialization and exit time */
-
-void __init ceph_xattr_init(void)
-{
-	ceph_dir_vxattrs_name_size = vxattrs_name_size(ceph_dir_vxattrs);
-	ceph_file_vxattrs_name_size = vxattrs_name_size(ceph_file_vxattrs);
-}
-
-void ceph_xattr_exit(void)
-{
-	ceph_dir_vxattrs_name_size = 0;
-	ceph_file_vxattrs_name_size = 0;
-}
-
 static struct ceph_vxattr *ceph_match_vxattr(struct inode *inode,
 						const char *name)
 {