On Thu, Jun 29, 2023 at 08:00:43PM +0800, Kemeng Shi wrote: > Commit 0acdb8876fead ("ext4: don't call update_backups() multiple times > for the same bg") add check in ext4_flex_group_add to avoid call > update_backups multiple times for block group descriptors in the same > group descriptor block. However, we have already call update_backups in > block step, so the added check is unnecessary. I'm having trouble understaind this comit. What do you mean by the "block step" in the last paragraph? - Ted