bcachefs: closure per journal buf

Prep work for having multiple journal writes in flight.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-01-31 13:42:48 -05:00
commit 38789c2508
3 changed files with 41 additions and 23 deletions