[lkp] [+364 bytes kernel size regression] [i386-tinyconfig] [d68fc4d5da] xattr: use rbtree for simple_xattrs

[kernel test robot <lkp@intel.com>]

FYI, we noticed a +364 bytes kernel size regression due to commit:

commit: d68fc4d5da695b25e5580d96fafc8ab7bb4b1fc5 (xattr: use rbtree for simple_xattrs)
url: https://github.com/intel-lab-lkp/linux/commits/Christian-Brauner/xattr-use-rbtree-for-simple_xattrs/20221107-213723
patch link: https://lore.kernel.org/linux-fsdevel/20221107133540.1503822-1-brauner@kernel.org
patch subject: [PATCH] xattr: use rbtree for simple_xattrs


Details as below (size data is obtained by `nm --size-sort vmlinux`):

9abf2313: Linux 6.1-rc1
d68fc4d5: xattr: use rbtree for simple_xattrs

+-------------------------------+----------+----------+-------+
|            symbol             | 9abf2313 | d68fc4d5 | delta |
+-------------------------------+----------+----------+-------+
| nm.T.simple_xattr_get         | 75       | 217      | 142   |
| bzImage                       | 491520   | 491648   | 128   |
| nm.T.simple_xattr_set         | 256      | 314      | 58    |
| nm.T.simple_xattrs_free       | 0        | 49       | 49    |
| nm.t.put_simple_xattr_rcu     | 0        | 42       | 42    |
| nm.T.simple_xattr_add         | 0        | 40       | 40    |
| nm.t.free_simple_xattr        | 0        | 23       | 23    |
| nm.T.simple_xattrs_init       | 0        | 14       | 14    |
| nm.T.simple_xattr_alloc       | 49       | 56       | 7     |
| nm.t.free_simple_xattr_rcu_cb | 0        | 2        | 2     |
| nm.D.linux_banner             | 152      | 153      | 1     |
| nm.T.simple_xattr_list        | 94       | 93       | -1    |
| nm.T.simple_xattr_list_add    | 13       | 0        | -13   |
+-------------------------------+----------+----------+-------+



Thanks