bcachefs: remove unused key cache coherency flag

Signed-off-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/bkey_methods.h

@@ -83,7 +83,6 @@ enum btree_update_flags {
 	__BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE,
 	__BTREE_UPDATE_NOJOURNAL,
 	__BTREE_UPDATE_KEY_CACHE_RECLAIM,
-	__BTREE_UPDATE_NO_KEY_CACHE_COHERENCY,
 
 	__BTREE_TRIGGER_NORUN,		/* Don't run triggers at all */
 
@@ -98,8 +97,6 @@ enum btree_update_flags {
 #define BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE (1U << __BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE)
 #define BTREE_UPDATE_NOJOURNAL		(1U << __BTREE_UPDATE_NOJOURNAL)
 #define BTREE_UPDATE_KEY_CACHE_RECLAIM	(1U << __BTREE_UPDATE_KEY_CACHE_RECLAIM)
-#define BTREE_UPDATE_NO_KEY_CACHE_COHERENCY	\
-	(1U << __BTREE_UPDATE_NO_KEY_CACHE_COHERENCY)
 
 #define BTREE_TRIGGER_NORUN		(1U << __BTREE_TRIGGER_NORUN)
 

fs/bcachefs/btree_update_leaf.c

@@ -1606,9 +1606,7 @@ bch2_trans_update_by_path_trace(struct btree_trans *trans, struct btree_path *pa
 	 * the key cache - but the key has to exist in the btree for that to
 	 * work:
 	 */
-	if (path->cached &&
-	    bkey_deleted(&i->old_k) &&
-	    !(flags & BTREE_UPDATE_NO_KEY_CACHE_COHERENCY))
+	if (path->cached && bkey_deleted(&i->old_k))
 		return flush_new_cached_update(trans, path, i, flags, ip);
 
 	return 0;