LU-14438 ldiskfs: backport ldiskfs mballoc patches

LU-14438 ldiskfs: backport ldiskfs mballoc patches

This contains following kernel patches:

cfd732377221 ("ext4: add prefetching for block allocation bitmaps")
3d392b2676bf ("ext4: add prefetch_block_bitmaps mount option")
dddcd2f9ebde ("ext4: optimize the implementation of
		     ext4_mb_good_group()")
67d251860461 ("ext4: drop s_mb_bal_lock and convert protected fields
                     to atomic")
a6c75eaf1103 ("ext4: add mballoc stats proc file")
4b68f6df1059 ("ext4: add MB_NUM_ORDERS macro")
196e402adf2e ("ext4: improve cr 0 / cr 1 group scanning")
21175ca434c5 ("ext4: make prefetch_block_bitmaps default")
077d0c2c78df ("ext4: make mb_optimize_scan performance mount option
                     work with extents")
3fa5d23e68a3 ("ext4: reflect mb_optimize_scan value in options file")
4fca50d440cc ("ext4: make mballoc try target group first even with
                     mb_optimize_scan")
1940265ede66 ("ext4: avoid unnecessary spreading of allocations among
                     groups")
a9f2a2931d0e ("ext4: use locality group preallocation for small
                     closed files")
83e80a6e3543 ("ext4: use buckets for cr 1 block scan instead of
                     rbtree")
80fa46d6b9e7 ("ext4: limit the number of retries after discarding
                     preallocations blocks")
a078dff87013 ("ext4: fixup possible uninitialized variable access in
                     ext4_mb_choose_next_group_cr1()")
820897258ad3 ("ext4: Refactor code related to freeing PAs")
5354b2af3406 ("ext4: allow ext4_get_group_info() to fail")
3c6296046c85 ("ext4: Don't skip prefetching BLOCK_UNINIT groups")
4f3d1e4533b0 ("ext4: Ensure ext4_mb_prefetch_fini() is called for all
                     prefetched BGs")

Signed-off-by: Bobi Jam <bobijam@whamcloud.com>
Change-Id: I079dfb74bd743894934484803cedb683073e4d94
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/51472
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Li Dongyang <dongyangli@ddn.com>
Reviewed-by: Alex Zhuravlev <bzzz@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>