Move c_src dirs back to toplevel

[bcachefs-tools-debian] / libbcachefs / subvolume.h

diff --git a/libbcachefs/subvolume.h b/libbcachefs/subvolume.h
index b5067dc68fc7790f05e45e79f8e1fb2e4a12c01d..a6f56f66e27cb7699402f089ef89a2f1355077c4 100644 (file)
--- a/libbcachefs/subvolume.h
+++ b/libbcachefs/subvolume.h
@@ -2,125 +2,33 @@
 #ifndef _BCACHEFS_SUBVOLUME_H
 #define _BCACHEFS_SUBVOLUME_H
 
+#include "darray.h"
 #include "subvolume_types.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);
+enum bkey_invalid_flags;
 
-#define bch2_bkey_ops_snapshot (struct bkey_ops) {             \
-       .key_invalid    = bch2_snapshot_invalid,                \
-       .val_to_text    = bch2_snapshot_to_text,                \
-}
+int bch2_check_subvols(struct bch_fs *);
 
-int bch2_mark_snapshot(struct bch_fs *, struct bkey_s_c,
-                      struct bkey_s_c, u64, unsigned);
-
-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, (size_t) 128) * 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;
-}
-
-static inline bool snapshot_list_has_id(struct snapshot_id_list *s, u32 id)
-{
-       unsigned i;
-
-       for (i = 0; i < s->nr; i++)
-               if (id == s->d[i])
-                       return true;
-       return false;
-}
-
-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);
 
-#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,               \
-}
+       .min_val_size   = 16,                                   \
+})
 
 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 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 *, bool);