[lkp] [+328 bytes kernel size regression] [i386-tinyconfig] [1b7c843021] mm: vmalloc: use rwsem, mutex for vmap_area_lock and vmap_block->lock

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

FYI, we noticed a +328 bytes kernel size regression due to commit:

commit: 1b7c843021466759acc93c26bf63bfdabf51398c (mm: vmalloc: use rwsem, mutex for vmap_area_lock and vmap_block->lock)
url: https://github.com/intel-lab-lkp/linux/commits/Lorenzo-Stoakes/fs-proc-kcore-Avoid-bounce-buffer-for-ktext-data/20230319-151114
patch link: https://lore.kernel.org/all/6c7f1ac0aeb55faaa46a09108d3999e4595870d9.1679209395.git.lstoakes@gmail.com/
patch subject: [PATCH v2 2/4] mm: vmalloc: use rwsem, mutex for vmap_area_lock and vmap_block->lock


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

fcb76393: fs/proc/kcore: Avoid bounce buffer for ktext data
1b7c8430: mm: vmalloc: use rwsem, mutex for vmap_area_lock and vmap_block->lock

+----------------------------------+----------+----------+-------+
|              symbol              | fcb76393 | 1b7c8430 | delta |
+----------------------------------+----------+----------+-------+
| bzImage                          | 501536   | 501760   | 224   |
| nm.t.vb_free                     | 178      | 210      | 32    |
| nm.T.find_vmap_area              | 6        | 36       | 30    |
| nm.t.purge_fragmented_blocks     | 276      | 306      | 30    |
| nm.T.vread                       | 345      | 373      | 28    |
| nm.t.vb_alloc                    | 196      | 222      | 26    |
| nm.t.find_unlink_vmap_area       | 49       | 73       | 24    |
| nm.t.alloc_vmap_area             | 1264     | 1288     | 24    |
| nm.t.free_vmap_block             | 117      | 140      | 23    |
| nm.t.__get_vm_area_node          | 218      | 240      | 22    |
| nm.t._vm_unmap_aliases           | 148      | 168      | 20    |
| nm.t.free_vmap_area              | 676      | 696      | 20    |
| nm.t.new_vmap_block              | 339      | 357      | 18    |
| nm.d.vmap_area_lock              | 0        | 16       | 16    |
| nm.t.vmap_ram_vread              | 259      | 272      | 13    |
| nm.T.remap_vmalloc_range_partial | 164      | 166      | 2     |
+----------------------------------+----------+----------+-------+



Thanks