Hi Sergei,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on axboe-block/for-next]
[also build test ERROR on linus/master v6.1-rc8 next-20221208]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Sergei-Shtepa/blksnap-block-devices-snapshots-module/20221209-231603
base:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
patch link:    https://lore.kernel.org/r/20221209142331.26395-6-sergei.shtepa%40veeam.com
patch subject: [PATCH v2 05/21] block, blksnap: header file of the module interface
config: i386-randconfig-a014
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/f2c9aaea34090b2ac94fc2e24498d29d7c6fc873
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Sergei-Shtepa/blksnap-block-devices-snapshots-module/20221209-231603
        git checkout f2c9aaea34090b2ac94fc2e24498d29d7c6fc873
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from <command-line>:
>> ./usr/include/linux/blksnap.h:508:15: error: expected declaration specifiers or '...' before 'sizeof'
     508 | static_assert(sizeof(struct blk_snap_snapshot_event) == 4096,
         |               ^~~~~~
>> ./usr/include/linux/blksnap.h:509:9: error: expected declaration specifiers or '...' before string constant
     509 |         "The size struct blk_snap_snapshot_event should be equal to the size of the page.");
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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