Hi Jianchao, FYI, this patch series has confliects with these patches, which landed in 5.13-rc1: 196e402adf2e - ext4: improve cr 0 / cr 1 group scanning 4b68f6df1059 - ext4: add MB_NUM_ORDERS macro a6c75eaf1103 - ext4: add mballoc stats proc file 67d251860461 - ext4: drop s_mb_bal_lock and convert protected fields to atomic The conflicts were relatively minor, but the obvious fix-ups resulted in a large number of crashes caused by various stress tests, such as generic/068 and generic/204. I'm currently investigating to see what I might have messed up when I tried applying these patches, as well as running your patch set applied against 5.12 to make sure the problems weren't introduced by the patch set itself. - Ted
