bcache: Refactor journalling flow control
Making things less asynchronous that don't need to be - bch_journal()
only has to block when the journal or journal entry is full, which is
emphatically not a fast path. So make it a normal function that just
returns when it finishes, to make the code and control flow easier to
follow.
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
diff --git a/drivers/md/bcache/journal.h b/drivers/md/bcache/journal.h
index 3ca93d3..7045e6f 100644
--- a/drivers/md/bcache/journal.h
+++ b/drivers/md/bcache/journal.h
@@ -200,8 +200,9 @@
struct closure;
struct cache_set;
struct btree_op;
+struct keylist;
-void bch_journal(struct closure *);
+atomic_t *bch_journal(struct cache_set *, struct keylist *, struct closure *);
void bch_journal_next(struct journal *);
void bch_journal_mark(struct cache_set *, struct list_head *);
void bch_journal_meta(struct cache_set *, struct closure *);