bcachefs: wb_flush_one_slowpath()

A bit of refactoring for better inlining in the main btree write buffer
flush path.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-11-26 21:58:11 -05:00
commit ab4fb4b678