1 files changed, 65 insertions, 0 deletions
diff --git a/libbcachefs/fs.h b/libbcachefs/fs.h
new file mode 100644
index 00000000..f7cad296
--- /dev/null
+++ b/libbcachefs/fs.h
@@ -0,0 +1,65 @@
+#ifndef _BCACHE_FS_H
+#define _BCACHE_FS_H
+
+#include "str_hash.h"
+
+#include <linux/seqlock.h>
+
+struct bch_inode_info {
+	struct inode		vfs_inode;
+
+	struct mutex		update_lock;
+	u64			journal_seq;
+
+	atomic_long_t		i_size_dirty_count;
+
+	/*
+	 * these are updated whenever we update the inode in the btree - for
+	 * e.g. fsync
+	 */
+	u64			i_size;
+	u32			i_flags;
+
+	atomic_long_t		i_sectors_dirty_count;
+	atomic64_t		i_sectors;
+
+	struct bch_hash_info	str_hash;
+};
+
+#define to_bch_ei(_inode)					\
+	container_of(_inode, struct bch_inode_info, vfs_inode)
+
+static inline u8 mode_to_type(umode_t mode)
+{
+	return (mode >> 12) & 15;
+}
+
+static inline unsigned nlink_bias(umode_t mode)
+{
+	return S_ISDIR(mode) ? 2 : 1;
+}
+
+struct bch_inode_unpacked;
+
+#ifndef NO_BCACHE_FS
+
+/* returns 0 if we want to do the update, or error is passed up */
+typedef int (*inode_set_fn)(struct bch_inode_info *,
+			    struct bch_inode_unpacked *, void *);
+
+int __must_check __bch2_write_inode(struct bch_fs *, struct bch_inode_info *,
+				    inode_set_fn, void *);
+int __must_check bch2_write_inode(struct bch_fs *,
+				  struct bch_inode_info *);
+
+void bch2_vfs_exit(void);
+int bch2_vfs_init(void);
+
+#else
+
+static inline void bch2_vfs_exit(void) {}
+static inline int bch2_vfs_init(void) { return 0; }
+
+#endif
+
+#endif /* _BCACHE_FS_H */