1 files changed, 120 insertions, 32 deletions

diff --git a/fs/bcachefs/inode.h b/fs/bcachefs/inode.h
index 056298050550..b8ec3e628d90 100644
--- a/fs/bcachefs/inode.h
+++ b/fs/bcachefs/inode.h
@@ -5,37 +5,47 @@
 #include "bkey.h"
 #include "bkey_methods.h"
 #include "opts.h"
+#include "snapshot.h"
 
-enum bkey_invalid_flags;
 extern const char * const bch2_inode_opts[];
 
-int bch2_inode_invalid(struct bch_fs *, struct bkey_s_c,
-		       enum bkey_invalid_flags, struct printbuf *);
-int bch2_inode_v2_invalid(struct bch_fs *, struct bkey_s_c,
-			  enum bkey_invalid_flags, struct printbuf *);
-int bch2_inode_v3_invalid(struct bch_fs *, struct bkey_s_c,
-			  enum bkey_invalid_flags, struct printbuf *);
+int bch2_inode_validate(struct bch_fs *, struct bkey_s_c,
+			struct bkey_validate_context);
+int bch2_inode_v2_validate(struct bch_fs *, struct bkey_s_c,
+			   struct bkey_validate_context);
+int bch2_inode_v3_validate(struct bch_fs *, struct bkey_s_c,
+			   struct bkey_validate_context);
 void bch2_inode_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
 
+int __bch2_inode_has_child_snapshots(struct btree_trans *, struct bpos);
+
+static inline int bch2_inode_has_child_snapshots(struct btree_trans *trans, struct bpos pos)
+{
+	return bch2_snapshot_is_leaf(trans->c, pos.snapshot) <= 0
+		? __bch2_inode_has_child_snapshots(trans, pos)
+		: 0;
+}
+
 int bch2_trigger_inode(struct btree_trans *, enum btree_id, unsigned,
-			  struct bkey_s_c, struct bkey_s, unsigned);
+		       struct bkey_s_c, struct bkey_s,
+		       enum btree_iter_update_trigger_flags);
 
 #define bch2_bkey_ops_inode ((struct bkey_ops) {	\
-	.key_invalid	= bch2_inode_invalid,		\
+	.key_validate	= bch2_inode_validate,		\
 	.val_to_text	= bch2_inode_to_text,		\
 	.trigger	= bch2_trigger_inode,		\
 	.min_val_size	= 16,				\
 })
 
 #define bch2_bkey_ops_inode_v2 ((struct bkey_ops) {	\
-	.key_invalid	= bch2_inode_v2_invalid,	\
+	.key_validate	= bch2_inode_v2_validate,	\
 	.val_to_text	= bch2_inode_to_text,		\
 	.trigger	= bch2_trigger_inode,		\
 	.min_val_size	= 32,				\
 })
 
 #define bch2_bkey_ops_inode_v3 ((struct bkey_ops) {	\
-	.key_invalid	= bch2_inode_v3_invalid,	\
+	.key_validate	= bch2_inode_v3_validate,	\
 	.val_to_text	= bch2_inode_to_text,		\
 	.trigger	= bch2_trigger_inode,		\
 	.min_val_size	= 48,				\
@@ -48,16 +58,26 @@ static inline bool bkey_is_inode(const struct bkey *k)
 		k->type == KEY_TYPE_inode_v3;
 }
 
-int bch2_inode_generation_invalid(struct bch_fs *, struct bkey_s_c,
-				  enum bkey_invalid_flags, struct printbuf *);
+int bch2_inode_generation_validate(struct bch_fs *, struct bkey_s_c,
+				   struct bkey_validate_context);
 void bch2_inode_generation_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
 
 #define bch2_bkey_ops_inode_generation ((struct bkey_ops) {	\
-	.key_invalid	= bch2_inode_generation_invalid,	\
+	.key_validate	= bch2_inode_generation_validate,	\
 	.val_to_text	= bch2_inode_generation_to_text,	\
 	.min_val_size	= 8,					\
 })
 
+int bch2_inode_alloc_cursor_validate(struct bch_fs *, struct bkey_s_c,
+				     struct bkey_validate_context);
+void bch2_inode_alloc_cursor_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
+
+#define bch2_bkey_ops_inode_alloc_cursor ((struct bkey_ops) {	\
+	.key_validate	= bch2_inode_alloc_cursor_validate,	\
+	.val_to_text	= bch2_inode_alloc_cursor_to_text,	\
+	.min_val_size	= 16,					\
+})
+
 #if 0
 typedef struct {
 	u64			lo;
@@ -68,6 +88,7 @@ typedef u64 u96;
 
 struct bch_inode_unpacked {
 	u64			bi_inum;
+	u32			bi_snapshot;
 	u64			bi_journal_seq;
 	__le64			bi_hash_seed;
 	u64			bi_size;
@@ -80,6 +101,7 @@ struct bch_inode_unpacked {
 	BCH_INODE_FIELDS_v3()
 #undef  x
 };
+BITMASK(INODE_STR_HASH,	struct bch_inode_unpacked, bi_flags, 20, 24);
 
 struct bkey_inode_buf {
 	struct bkey_i_inode_v3	inode;
@@ -87,7 +109,7 @@ struct bkey_inode_buf {
 #define x(_name, _bits)		+ 8 + _bits / 8
 	u8		_pad[0 + BCH_INODE_FIELDS_v3()];
 #undef  x
-} __packed __aligned(8);
+};
 
 void bch2_inode_pack(struct bkey_inode_buf *, const struct bch_inode_unpacked *);
 int bch2_inode_unpack(struct bkey_s_c, struct bch_inode_unpacked *);
@@ -95,13 +117,40 @@ struct bkey_i *bch2_inode_to_v3(struct btree_trans *, struct bkey_i *);
 
 void bch2_inode_unpacked_to_text(struct printbuf *, struct bch_inode_unpacked *);
 
-int bch2_inode_peek_nowarn(struct btree_trans *, struct btree_iter *,
-		    struct bch_inode_unpacked *, subvol_inum, unsigned);
-int bch2_inode_peek(struct btree_trans *, struct btree_iter *,
-		    struct bch_inode_unpacked *, subvol_inum, unsigned);
+int __bch2_inode_peek(struct btree_trans *, struct btree_iter *,
+		      struct bch_inode_unpacked *, subvol_inum, unsigned, bool);
+
+static inline int bch2_inode_peek_nowarn(struct btree_trans *trans,
+					 struct btree_iter *iter,
+					 struct bch_inode_unpacked *inode,
+					 subvol_inum inum, unsigned flags)
+{
+	return __bch2_inode_peek(trans, iter, inode, inum, flags, false);
+}
+
+static inline int bch2_inode_peek(struct btree_trans *trans,
+				  struct btree_iter *iter,
+				  struct bch_inode_unpacked *inode,
+				  subvol_inum inum, unsigned flags)
+{
+	return __bch2_inode_peek(trans, iter, inode, inum, flags, true);
+}
+
+int bch2_inode_find_by_inum_snapshot(struct btree_trans *, u64, u32,
+				     struct bch_inode_unpacked *, unsigned);
+int bch2_inode_find_by_inum_nowarn_trans(struct btree_trans *,
+				  subvol_inum,
+				  struct bch_inode_unpacked *);
+int bch2_inode_find_by_inum_trans(struct btree_trans *, subvol_inum,
+				  struct bch_inode_unpacked *);
+int bch2_inode_find_by_inum(struct bch_fs *, subvol_inum,
+			    struct bch_inode_unpacked *);
+
+int bch2_inode_find_snapshot_root(struct btree_trans *trans, u64 inum,
+				  struct bch_inode_unpacked *root);
 
 int bch2_inode_write_flags(struct btree_trans *, struct btree_iter *,
-		     struct bch_inode_unpacked *, enum btree_update_flags);
+		     struct bch_inode_unpacked *, enum btree_iter_update_trigger_flags);
 
 static inline int bch2_inode_write(struct btree_trans *trans,
 		     struct btree_iter *iter,
@@ -110,12 +159,12 @@ static inline int bch2_inode_write(struct btree_trans *trans,
 	return bch2_inode_write_flags(trans, iter, inode, 0);
 }
 
-int __bch2_fsck_write_inode(struct btree_trans *, struct bch_inode_unpacked *, u32);
-int bch2_fsck_write_inode(struct btree_trans *, struct bch_inode_unpacked *, u32);
+int __bch2_fsck_write_inode(struct btree_trans *, struct bch_inode_unpacked *);
+int bch2_fsck_write_inode(struct btree_trans *, struct bch_inode_unpacked *);
 
 void bch2_inode_init_early(struct bch_fs *,
 			   struct bch_inode_unpacked *);
-void bch2_inode_init_late(struct bch_inode_unpacked *, u64,
+void bch2_inode_init_late(struct bch_fs *, struct bch_inode_unpacked *, u64,
 			  uid_t, gid_t, umode_t, dev_t,
 			  struct bch_inode_unpacked *);
 void bch2_inode_init(struct bch_fs *, struct bch_inode_unpacked *,
@@ -127,14 +176,6 @@ int bch2_inode_create(struct btree_trans *, struct btree_iter *,
 
 int bch2_inode_rm(struct bch_fs *, subvol_inum);
 
-int bch2_inode_find_by_inum_nowarn_trans(struct btree_trans *,
-				  subvol_inum,
-				  struct bch_inode_unpacked *);
-int bch2_inode_find_by_inum_trans(struct btree_trans *, subvol_inum,
-				  struct bch_inode_unpacked *);
-int bch2_inode_find_by_inum(struct bch_fs *, subvol_inum,
-			    struct bch_inode_unpacked *);
-
 #define inode_opt_get(_c, _inode, _name)			\
 	((_inode)->bi_##_name ? (_inode)->bi_##_name - 1 : (_c)->opts._name)
 
@@ -191,6 +232,33 @@ static inline u32 bch2_inode_flags(struct bkey_s_c k)
 	}
 }
 
+static inline unsigned bkey_inode_mode(struct bkey_s_c k)
+{
+	switch (k.k->type) {
+	case KEY_TYPE_inode:
+		return le16_to_cpu(bkey_s_c_to_inode(k).v->bi_mode);
+	case KEY_TYPE_inode_v2:
+		return le16_to_cpu(bkey_s_c_to_inode_v2(k).v->bi_mode);
+	case KEY_TYPE_inode_v3:
+		return INODEv3_MODE(bkey_s_c_to_inode_v3(k).v);
+	default:
+		return 0;
+	}
+}
+
+static inline bool bch2_inode_casefold(struct bch_fs *c, const struct bch_inode_unpacked *bi)
+{
+	/* inode opts are stored with a +1 bias: 0 means "unset, use fs opt" */
+	return bi->bi_casefold
+		? bi->bi_casefold - 1
+		: c->opts.casefold;
+}
+
+static inline bool bch2_inode_has_backpointer(const struct bch_inode_unpacked *bi)
+{
+	return bi->bi_dir || bi->bi_dir_offset;
+}
+
 /* i_nlink: */
 
 static inline unsigned nlink_bias(umode_t mode)
@@ -223,7 +291,27 @@ void bch2_inode_nlink_dec(struct btree_trans *, struct bch_inode_unpacked *);
 struct bch_opts bch2_inode_opts_to_opts(struct bch_inode_unpacked *);
 void bch2_inode_opts_get(struct bch_io_opts *, struct bch_fs *,
 			 struct bch_inode_unpacked *);
-int bch2_inum_opts_get(struct btree_trans*, subvol_inum, struct bch_io_opts *);
+int bch2_inum_opts_get(struct btree_trans *, subvol_inum, struct bch_io_opts *);
+int bch2_inode_set_casefold(struct btree_trans *, subvol_inum,
+			    struct bch_inode_unpacked *, unsigned);
+
+#include "rebalance.h"
+
+static inline struct bch_extent_rebalance
+bch2_inode_rebalance_opts_get(struct bch_fs *c, struct bch_inode_unpacked *inode)
+{
+	struct bch_io_opts io_opts;
+	bch2_inode_opts_get(&io_opts, c, inode);
+	return io_opts_to_rebalance_opts(c, &io_opts);
+}
+
+#define BCACHEFS_ROOT_SUBVOL_INUM					\
+	((subvol_inum) { BCACHEFS_ROOT_SUBVOL,	BCACHEFS_ROOT_INO })
+
+static inline bool subvol_inum_eq(subvol_inum a, subvol_inum b)
+{
+	return a.subvol == b.subvol && a.inum == b.inum;
+}
 
 int bch2_inode_rm_snapshot(struct btree_trans *, u64, u32);
 int bch2_delete_dead_inodes(struct bch_fs *);