zfs: merge openzfs/zfs@6a2f7b384

Notable upstream pull request merges:
#16857 387ed5ca4 Add recursive dataset mounting and unmounting support

to pam_zfs_key

#16929 c2458ba92 optimize recv_fix_encryption_hierarchy()
#16980 12f0baf34 Make the vfs.zfs.vdev.raidz_impl sysctl cross-platform
#16986 40496514b Expand fragmentation table to reflect larger possibile

allocation sizes

#17003 88020b993 Add kstats tracking gang allocations
#17013 21205f648 Avoid ARC buffer transfrom operations in prefetch
#17016 390f6c119 zio: lock parent zios when updating wait counts on

reexecute

#17029 b8c73ab78 zio: do no-op injections just before handing off to vdevs
#17037 6a2f7b384 Fix metaslab group fragmentation math
#17040 b901d4a0b Update the dataset name in handle after zfs_rename

Obtained from: OpenZFS
OpenZFS commit: 6a2f7b38442b42f4bc9a848f8de10fc792ce8d76