1 files changed, 35 insertions, 0 deletions
diff --git a/fs/xfs/scrub/xfile.h b/fs/xfs/scrub/xfile.h
new file mode 100644
index 000000000000..cc2cc1714cd4
--- /dev/null
+++ b/fs/xfs/scrub/xfile.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2018-2023 Oracle.  All Rights Reserved.
+ * Author: Darrick J. Wong <djwong@kernel.org>
+ */
+#ifndef __XFS_SCRUB_XFILE_H__
+#define __XFS_SCRUB_XFILE_H__
+
+struct xfile {
+	struct file		*file;
+};
+
+int xfile_create(const char *description, loff_t isize, struct xfile **xfilep);
+void xfile_destroy(struct xfile *xf);
+
+int xfile_load(struct xfile *xf, void *buf, size_t count, loff_t pos);
+int xfile_store(struct xfile *xf, const void *buf, size_t count,
+		loff_t pos);
+
+void xfile_discard(struct xfile *xf, loff_t pos, u64 count);
+loff_t xfile_seek_data(struct xfile *xf, loff_t pos);
+
+#define XFILE_MAX_FOLIO_SIZE	(PAGE_SIZE << MAX_PAGECACHE_ORDER)
+
+#define XFILE_ALLOC		(1 << 0) /* allocate folio if not present */
+struct folio *xfile_get_folio(struct xfile *xf, loff_t offset, size_t len,
+		unsigned int flags);
+void xfile_put_folio(struct xfile *xf, struct folio *folio);
+
+static inline unsigned long long xfile_bytes(struct xfile *xf)
+{
+	return file_inode(xf->file)->i_blocks << SECTOR_SHIFT;
+}
+
+#endif /* __XFS_SCRUB_XFILE_H__ */