zfs: merge openzfs/zfs@ad0a55461
Notable upstream pull request merges:
#12355 Teach zpool scrub to scrub only blocks in error log #14811 Refine special_small_blocks property validation #14854 zil: Some micro-optimizations #14855 zil: Free lwb_buf after write completion #14860 Fixes for issues identified by recent Coverity defect reports #14861 Probe vdevs before marking removed #14873 Add the ability to uninitialize a zpool #14875 Hold db_mtx when updating db_state
Obtained from: OpenZFS
OpenZFS commit: ad0a554614b096698d9969340c4c593690042d5b