bcachefs: Mark recovery passses that are safe to run online

Online fsck is coming, and many of our recovery/fsck passes are already
safe to run while the filesystem is in use - mark which ones.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/recovery_types.h

@@ -6,6 +6,7 @@
 #define PASS_FSCK		BIT(1)
 #define PASS_UNCLEAN		BIT(2)
 #define PASS_ALWAYS		BIT(3)
+#define PASS_ONLINE		BIT(4)
 
 /*
  * Passes may be reordered, but the second field is a persistent identifier and
@@ -22,18 +23,18 @@
 	x(fs_journal_alloc,			 7, PASS_ALWAYS|PASS_SILENT)	\
 	x(set_may_go_rw,			 8, PASS_ALWAYS|PASS_SILENT)	\
 	x(journal_replay,			 9, PASS_ALWAYS)		\
-	x(check_alloc_info,			10, PASS_FSCK)			\
-	x(check_lrus,				11, PASS_FSCK)			\
-	x(check_btree_backpointers,		12, PASS_FSCK)			\
-	x(check_backpointers_to_extents,	13, PASS_FSCK)			\
-	x(check_extents_to_backpointers,	14, PASS_FSCK)			\
-	x(check_alloc_to_lru_refs,		15, PASS_FSCK)			\
+	x(check_alloc_info,			10, PASS_ONLINE|PASS_FSCK)	\
+	x(check_lrus,				11, PASS_ONLINE|PASS_FSCK)	\
+	x(check_btree_backpointers,		12, PASS_ONLINE|PASS_FSCK)	\
+	x(check_backpointers_to_extents,	13, PASS_ONLINE|PASS_FSCK)	\
+	x(check_extents_to_backpointers,	14, PASS_ONLINE|PASS_FSCK)	\
+	x(check_alloc_to_lru_refs,		15, PASS_ONLINE|PASS_FSCK)	\
 	x(fs_freespace_init,			16, PASS_ALWAYS|PASS_SILENT)	\
 	x(bucket_gens_init,			17, 0)				\
-	x(check_snapshot_trees,			18, PASS_FSCK)			\
-	x(check_snapshots,			19, PASS_FSCK)			\
-	x(check_subvols,			20, PASS_FSCK)			\
-	x(delete_dead_snapshots,		21, PASS_FSCK)			\
+	x(check_snapshot_trees,			18, PASS_ONLINE|PASS_FSCK)	\
+	x(check_snapshots,			19, PASS_ONLINE|PASS_FSCK)	\
+	x(check_subvols,			20, PASS_ONLINE|PASS_FSCK)	\
+	x(delete_dead_snapshots,		21, PASS_ONLINE|PASS_FSCK)	\
 	x(fs_upgrade_for_subvolumes,		22, 0)				\
 	x(resume_logged_ops,			23, PASS_ALWAYS)		\
 	x(check_inodes,				24, PASS_FSCK)			\