Re: [PATCH 00/18] btrfs: migrate to "block size" to describe the

[David Sterba <dsterba@suse.cz>]

On Wed, Dec 18, 2024 at 08:11:16PM +1030, Qu Wenruo wrote:
> [IMPEMENTATION]
> To reduce the confusion, this patchset will do such a huge migration in
> different steps:

With some many changes everywhere this is going to make backports even
more tedious. I think it would be best to do the conversion gradually or
selectively to code that does not change so often. As you've split it to
files we can first pick a few obvious ones (like file-item.c) or gather
stats from stable.git.

A quick and rough estimate for all 6.x.y releases counting file
backports in the individual patches in the list below. This is period of
2 years, 104 weeks (roughly matching number of releases). So if there
are 88 patches touching inode.c that's quite likely a conflict in every
backport.

This should be also correlated agains number of 'sectorsize' per file,
so it many not be that bad, for example in ioctl.c there are only 4
occurences so that's fine. The point is we can't do the renames without
some sensibility and respect to backports.

     88 inode.c
     62 disk-io.c
     61 volumes.c
     57 extent_io.c
     57 block-group.c
     56 ioctl.c
     52 extent-tree.c
     49 zoned.c
     49 qgroup.c
     37 send.c
     36 super.c
     33 ctree.c
     30 transaction.c
     29 file.c
     28 tree-log.c
     28 free-space-cache.c
     26 scrub.c
     24 ctree.h
     22 relocation.c
     19 delayed-inode.c
     17 tree-checker.c
     17 backref.c
     15 space-info.c
     14 extent_map.c
     12 free-space-tree.c
     12 disk-io.h
     11 block-group.h
     11 bio.c
     10 ordered-data.c
     10 block-rsv.c
      9 ref-verify.c
      9 file-item.c
      9 btrfs_inode.h
      8 include/uapi/linux/btrfs.h
      8 fs.h
      8 delayed-ref.c
      8 delalloc-space.c
      7 root-tree.c
      7 print-tree.c
      7 dir-item.c
      7 dev-replace.c
      7 block-rsv.h
      6 sysfs.c
      6 extent_io.h
      6 defrag.c
      6 compression.c
      5 volumes.h
      5 transaction.h
      5 qgroup.h
      5 export.c
      4 zoned.h
      4 space-info.h
      4 reflink.c
      4 inode-item.c
      4 include/trace/events/btrfs.h
      4 discard.c
      4 delayed-ref.h
      3 tree-log.h
      3 tree-defrag.c
      3 subpage.c
      3 raid56.c
      3 free-space-tree.h
      3 extent-io-tree.c
      3 extent-io-tests.c
      3 backref.h
      2 zlib.c
      2 xattr.c
      2 uuid-tree.c
      2 tree-mod-log.c
      2 tests/inode-tests.c
      2 tests/extent-map-tests.c
      2 tests/extent-buffer-tests.c
      2 root-tree.h
      2 relocation.h
      2 rcu-string.h
      2 qgroup-tests.c
      2 lzo.c
      2 locking.c
      2 inode-item.h
      2 free-space-cache.h
      2 extent-tree.h
      2 delayed-inode.h
      1 tree-checker.h
      1 tests/free-space-tree-tests.c
      1 sysfs.h
      1 props.c
      1 ordered-data.h
      1 messages.h
      1 messages.c
      1 include/uapi/linux/btrfs_tree.h
      1 fs.c
      1 file-item.h
      1 extent_map.h
      1 export.h
      1 compression.h
      1 btrfs-tests.c
      1 btrfs.h
      1 bio.h