bcachefs: bcachefs_metadata_version_deleted_inodes

Add a new bitset btree for inodes pending deletion; this means we no
longer have to scan the full inodes btree after an unclean shutdown.

Specifically, this adds:
 - a trigger to update the deleted_inodes btree based on changes to the
   inodes btree
 - a new recovery pass
 - and check_inodes is now only a fsck pass.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/bcachefs/bcachefs.h b/fs/bcachefs/bcachefs.h
index 87be62c27414..e1f1e8e871a8 100644
--- a/fs/bcachefs/bcachefs.h
+++ b/fs/bcachefs/bcachefs.h
@@ -453,6 +453,7 @@ enum gc_phase {
 	GC_PHASE_BTREE_backpointers,
 	GC_PHASE_BTREE_bucket_gens,
 	GC_PHASE_BTREE_snapshot_trees,
+	GC_PHASE_BTREE_deleted_inodes,
 
 	GC_PHASE_PENDING_DELETE,
 };