On Wed, 27 Oct 2021 16:18:44 +0200, Lukas Czerner wrote:

After some time I am once again resurrecting the patchset to convert the
ext4 to use the new mount API
(Documentation/filesystems/mount_api.txt).

The series can be applied on top of the current mainline tree and the work
is based on the patches from David Howells (thank you David). It was built
and tested with xfstests and a new ext4 mount options regression test that
was sent to the fstests list. You can check it out on github as well.

[...]

Applied, thanks!

[01/13] fs_parse: allow parameter value to be empty
        commit: 6abfaaf124a81b7d2ab132cc2c9885baa14171e5
[02/13] ext4: Add fs parameter specifications for mount options
        commit: e5a185c26c11cbd1d386be8ee4c5e57b4f62273a
[03/13] ext4: move option validation to a separate function
        commit: 4c94bff967d90e91ace38a9886c1c7777a9c6f91
[04/13] ext4: Change handle_mount_opt() to use fs_parameter
        commit: 461c3af045d3ab949360fedbfb3ea1dcd9d8b22b
[05/13] ext4: Allow sb to be NULL in ext4_msg()
        commit: da812f611934bef16fe02d667a76df77ae9cf99a
[06/13] ext4: move quota configuration out of handle_mount_opt()
        commit: e6e268cb682290da29e3c8408493a4474307b8cc
[07/13] ext4: check ext2/3 compatibility outside handle_mount_opt()
        commit: b6bd243500b6024d92eaaacf592ed8588c2c75ea
[08/13] ext4: get rid of super block and sbi from handle_mount_ops()
        commit: 6e47a3cc68fc525428297a00524833361ebbb0e9
[09/13] ext4: Completely separate options parsing and sb setup
        commit: 7edfd85b1ffd36593011dec96ab395912a340418
[10/13] ext4: clean up return values in handle_mount_opt()
        commit: 02f960f8db1cd0aa9c182f8804b2b41ffd2c37b2
[11/13] ext4: change token2str() to use ext4_param_specs
        commit: 97d8a670b4531437d5b842cf68dafa6d1a932ddf
[12/13] ext4: switch to the new mount api
        commit: cebe85d570cf84804e848332d6721bc9e5300e07
[13/13] ext4: Remove unused match_table_t tokens
        commit: ba2e524d918ab72c0e5edc02354bd6cb43d005f8

Best regards,
-- 
Theodore Ts'o [off-list ref]