1 files changed, 46 insertions, 0 deletions
diff --git a/fs/xfs/xfs_iwalk.h b/fs/xfs/xfs_iwalk.h
new file mode 100644
index 000000000000..6c960e10ed4d
--- /dev/null
+++ b/fs/xfs/xfs_iwalk.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2019 Oracle.  All Rights Reserved.
+ * Author: Darrick J. Wong <darrick.wong@oracle.com>
+ */
+#ifndef __XFS_IWALK_H__
+#define __XFS_IWALK_H__
+
+/* Walk all inodes in the filesystem starting from @startino. */
+typedef int (*xfs_iwalk_fn)(struct xfs_mount *mp, struct xfs_trans *tp,
+			    xfs_ino_t ino, void *data);
+/* Return values for xfs_iwalk_fn. */
+#define XFS_IWALK_CONTINUE	(XFS_ITER_CONTINUE)
+#define XFS_IWALK_ABORT		(XFS_ITER_ABORT)
+
+int xfs_iwalk(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t startino,
+		unsigned int flags, xfs_iwalk_fn iwalk_fn,
+		unsigned int inode_records, void *data);
+int xfs_iwalk_threaded(struct xfs_mount *mp, xfs_ino_t startino,
+		unsigned int flags, xfs_iwalk_fn iwalk_fn,
+		unsigned int inode_records, bool poll, void *data);
+
+/* Only iterate inodes within the same AG as @startino. */
+#define XFS_IWALK_SAME_AG	(0x1)
+
+#define XFS_IWALK_FLAGS_ALL	(XFS_IWALK_SAME_AG)
+
+/* Walk all inode btree records in the filesystem starting from @startino. */
+typedef int (*xfs_inobt_walk_fn)(struct xfs_mount *mp, struct xfs_trans *tp,
+				 xfs_agnumber_t agno,
+				 const struct xfs_inobt_rec_incore *irec,
+				 void *data);
+/* Return value (for xfs_inobt_walk_fn) that aborts the walk immediately. */
+#define XFS_INOBT_WALK_ABORT	(XFS_IWALK_ABORT)
+
+int xfs_inobt_walk(struct xfs_mount *mp, struct xfs_trans *tp,
+		xfs_ino_t startino, unsigned int flags,
+		xfs_inobt_walk_fn inobt_walk_fn, unsigned int inobt_records,
+		void *data);
+
+/* Only iterate inobt records within the same AG as @startino. */
+#define XFS_INOBT_WALK_SAME_AG	(XFS_IWALK_SAME_AG)
+
+#define XFS_INOBT_WALK_FLAGS_ALL (XFS_INOBT_WALK_SAME_AG)
+
+#endif /* __XFS_IWALK_H__ */