BLOCK_LEGACY_AUTOLOAD not default y in Linux 5.15.179+

Hello,

we're facing a regression after updating to 5.15.179+. I've found that fbdee71bb5d8d054e1bdb5af4c540f2cb86fe296 (block: deprecate autoloading based on dev_t) was merged that disabled autoloading of modules.

This broke mounting loopback devices on our side.

Why wasn't 451f0b6f4c44d7b649ae609157b114b71f6d7875 (block: default BLOCK_LEGACY_AUTOLOAD to y) merged, too?

This commit was merged for 6.1.y, 6.6.y and 6.12y, but not for 5.15.y.

Please consider merging this for 5.15.y soon.

Thanks. Sebastian