X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libbcachefs%2Fsubvolume.h;h=4045a180154a366fc19fdb1ae75a3bd6f3504c8f;hb=9866af841efddf6a8e56a5993fedc00cb65a0500;hp=ed02b982ff96f6f0eec46ff217e5ef1f3bbc369e;hpb=e489658c490524a921bc30474fa54d55aa8867c4;p=bcachefs-tools-debian

diff --git a/libbcachefs/subvolume.h b/libbcachefs/subvolume.h
index ed02b98..4045a18 100644
--- a/libbcachefs/subvolume.h
+++ b/libbcachefs/subvolume.h
@@ -2,115 +2,39 @@
 #ifndef _BCACHEFS_SUBVOLUME_H
 #define _BCACHEFS_SUBVOLUME_H
 
-void bch2_snapshot_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
-const char *bch2_snapshot_invalid(const struct bch_fs *, struct bkey_s_c);
+#include "subvolume_types.h"
 
-#define bch2_bkey_ops_snapshot (struct bkey_ops) {		\
-	.key_invalid	= bch2_snapshot_invalid,		\
-	.val_to_text	= bch2_snapshot_to_text,		\
-}
+enum bkey_invalid_flags;
 
-int bch2_mark_snapshot(struct bch_fs *, struct bkey_s_c,
-		       struct bkey_s_c, u64, unsigned);
+int bch2_check_subvols(struct bch_fs *);
+int bch2_check_subvol_children(struct bch_fs *);
 
-static inline struct snapshot_t *snapshot_t(struct bch_fs *c, u32 id)
-{
-	return genradix_ptr(&c->snapshots, U32_MAX - id);
-}
-
-static inline u32 bch2_snapshot_parent(struct bch_fs *c, u32 id)
-{
-	return snapshot_t(c, id)->parent;
-}
-
-static inline u32 bch2_snapshot_internal_node(struct bch_fs *c, u32 id)
-{
-	struct snapshot_t *s = snapshot_t(c, id);
-
-	return s->children[0] || s->children[1];
-}
-
-static inline u32 bch2_snapshot_sibling(struct bch_fs *c, u32 id)
-{
-	struct snapshot_t *s;
-	u32 parent = bch2_snapshot_parent(c, id);
-
-	if (!parent)
-		return 0;
-
-	s = snapshot_t(c, bch2_snapshot_parent(c, id));
-	if (id == s->children[0])
-		return s->children[1];
-	if (id == s->children[1])
-		return s->children[0];
-	return 0;
-}
-
-static inline bool bch2_snapshot_is_ancestor(struct bch_fs *c, u32 id, u32 ancestor)
-{
-	while (id && id < ancestor)
-		id = bch2_snapshot_parent(c, id);
-
-	return id == ancestor;
-}
-
-struct snapshots_seen {
-	struct bpos			pos;
-	size_t				nr;
-	size_t				size;
-	u32				*d;
-};
-
-static inline void snapshots_seen_exit(struct snapshots_seen *s)
-{
-	kfree(s->d);
-	s->d = NULL;
-}
-
-static inline void snapshots_seen_init(struct snapshots_seen *s)
-{
-	memset(s, 0, sizeof(*s));
-}
-
-static inline int snapshots_seen_add(struct bch_fs *c, struct snapshots_seen *s, u32 id)
-{
-	if (s->nr == s->size) {
-		size_t new_size = max(s->size, 128UL) * 2;
-		u32 *d = krealloc(s->d, new_size * sizeof(s->d[0]), GFP_KERNEL);
-
-		if (!d) {
-			bch_err(c, "error reallocating snapshots_seen table (new size %zu)",
-				new_size);
-			return -ENOMEM;
-		}
-
-		s->size = new_size;
-		s->d	= d;
-	}
-
-	s->d[s->nr++] = id;
-	return 0;
-}
-
-int bch2_fs_snapshots_check(struct bch_fs *);
-void bch2_fs_snapshots_exit(struct bch_fs *);
-int bch2_fs_snapshots_start(struct bch_fs *);
-
-const char *bch2_subvolume_invalid(const struct bch_fs *, struct bkey_s_c);
+int bch2_subvolume_invalid(struct bch_fs *, struct bkey_s_c,
+			   enum bkey_invalid_flags, struct printbuf *);
 void bch2_subvolume_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
+int bch2_subvolume_trigger(struct btree_trans *, enum btree_id, unsigned,
+			   struct bkey_s_c, struct bkey_s, unsigned);
 
-#define bch2_bkey_ops_subvolume (struct bkey_ops) {		\
+#define bch2_bkey_ops_subvolume ((struct bkey_ops) {		\
 	.key_invalid	= bch2_subvolume_invalid,		\
 	.val_to_text	= bch2_subvolume_to_text,		\
-}
+	.trigger	= bch2_subvolume_trigger,		\
+	.min_val_size	= 16,					\
+})
 
+int bch2_subvol_has_children(struct btree_trans *, u32);
 int bch2_subvolume_get(struct btree_trans *, unsigned,
 		       bool, int, struct bch_subvolume *);
 int bch2_subvolume_get_snapshot(struct btree_trans *, u32, u32 *);
 
-int bch2_subvolume_delete(struct btree_trans *, u32, int);
-int bch2_subvolume_create(struct btree_trans *, u64, u32,
-			  u32 *, u32 *, bool);
+int bch2_subvol_is_ro_trans(struct btree_trans *, u32);
+int bch2_subvol_is_ro(struct bch_fs *, u32);
+
+int bch2_delete_dead_snapshots(struct bch_fs *);
+void bch2_delete_dead_snapshots_async(struct bch_fs *);
+
+int bch2_subvolume_unlink(struct btree_trans *, u32);
+int bch2_subvolume_create(struct btree_trans *, u64, u32, u32, u32 *, u32 *, bool);
 
 int bch2_fs_subvolumes_init(struct bch_fs *);