bcachefs: Pull out data_update.c

This is the start of reorganizing the data IO paths. The plan is to also
break apart io.c into data_read.c and data_write.c, and migrate_write
will be renamed to the data_update path.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2022-06-13 19:07:19 -04:00 • committed by Kent Overstreet
commit c501fef6de
7 changed files with 452 additions and 428 deletions