bcachefs: Factor out fs-common.c

This refactoring makes the code easier to understand by separating the
bcachefs btree transactional code from the linux VFS code - but more
importantly, it's also to share code with the fuse port.

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

1 files changed, 16 insertions, 13 deletions

diff --git a/fs/bcachefs/dirent.h b/fs/bcachefs/dirent.h
index bc64718a7832..9a57ad005468 100644
--- a/fs/bcachefs/dirent.h
+++ b/fs/bcachefs/dirent.h
@@ -29,15 +29,13 @@ static inline unsigned dirent_val_u64s(unsigned len)
 			    sizeof(u64));
 }
 
-int __bch2_dirent_create(struct btree_trans *, u64,
-			 const struct bch_hash_info *, u8,
-			 const struct qstr *, u64, int);
-int bch2_dirent_create(struct bch_fs *c, u64, const struct bch_hash_info *,
-		       u8, const struct qstr *, u64, u64 *, int);
-
-int __bch2_dirent_delete(struct btree_trans *, u64,
-			 const struct bch_hash_info *,
-			 const struct qstr *);
+int bch2_dirent_create(struct btree_trans *, u64,
+		       const struct bch_hash_info *, u8,
+		       const struct qstr *, u64, int);
+
+int bch2_dirent_delete_at(struct btree_trans *,
+			  const struct bch_hash_info *,
+			  struct btree_iter *);
 int bch2_dirent_delete(struct bch_fs *, u64, const struct bch_hash_info *,
 		       const struct qstr *, u64 *);
 
@@ -48,15 +46,20 @@ enum bch_rename_mode {
 };
 
 int bch2_dirent_rename(struct btree_trans *,
-		       struct bch_inode_info *, const struct qstr *,
-		       struct bch_inode_info *, const struct qstr *,
+		       u64, struct bch_hash_info *,
+		       u64, struct bch_hash_info *,
+		       const struct qstr *, u64 *,
+		       const struct qstr *, u64 *,
 		       enum bch_rename_mode);
 
+struct btree_iter *
+__bch2_dirent_lookup_trans(struct btree_trans *, u64,
+			   const struct bch_hash_info *,
+			   const struct qstr *);
 u64 bch2_dirent_lookup(struct bch_fs *, u64, const struct bch_hash_info *,
 		       const struct qstr *);
 
 int bch2_empty_dir_trans(struct btree_trans *, u64);
-int bch2_empty_dir(struct bch_fs *, u64);
-int bch2_readdir(struct bch_fs *, struct file *, struct dir_context *);
+int bch2_readdir(struct bch_fs *, u64, struct dir_context *);
 
 #endif /* _BCACHEFS_DIRENT_H */