v4.19.13 snapshot.
diff --git a/fs/xfs/xfs_buf_item.h b/fs/xfs/xfs_buf_item.h
new file mode 100644
index 0000000..90f65f8
--- /dev/null
+++ b/fs/xfs/xfs_buf_item.h
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
+ */
+#ifndef __XFS_BUF_ITEM_H__
+#define __XFS_BUF_ITEM_H__
+
+/* kernel only definitions */
+
+/* buf log item flags */
+#define XFS_BLI_HOLD 0x01
+#define XFS_BLI_DIRTY 0x02
+#define XFS_BLI_STALE 0x04
+#define XFS_BLI_LOGGED 0x08
+#define XFS_BLI_INODE_ALLOC_BUF 0x10
+#define XFS_BLI_STALE_INODE 0x20
+#define XFS_BLI_INODE_BUF 0x40
+#define XFS_BLI_ORDERED 0x80
+
+#define XFS_BLI_FLAGS \
+ { XFS_BLI_HOLD, "HOLD" }, \
+ { XFS_BLI_DIRTY, "DIRTY" }, \
+ { XFS_BLI_STALE, "STALE" }, \
+ { XFS_BLI_LOGGED, "LOGGED" }, \
+ { XFS_BLI_INODE_ALLOC_BUF, "INODE_ALLOC" }, \
+ { XFS_BLI_STALE_INODE, "STALE_INODE" }, \
+ { XFS_BLI_INODE_BUF, "INODE_BUF" }, \
+ { XFS_BLI_ORDERED, "ORDERED" }
+
+
+struct xfs_buf;
+struct xfs_mount;
+struct xfs_buf_log_item;
+
+/*
+ * This is the in core log item structure used to track information
+ * needed to log buffers. It tracks how many times the lock has been
+ * locked, and which 128 byte chunks of the buffer are dirty.
+ */
+struct xfs_buf_log_item {
+ xfs_log_item_t bli_item; /* common item structure */
+ struct xfs_buf *bli_buf; /* real buffer pointer */
+ unsigned int bli_flags; /* misc flags */
+ unsigned int bli_recur; /* lock recursion count */
+ atomic_t bli_refcount; /* cnt of tp refs */
+ int bli_format_count; /* count of headers */
+ struct xfs_buf_log_format *bli_formats; /* array of in-log header ptrs */
+ struct xfs_buf_log_format __bli_format; /* embedded in-log header */
+};
+
+int xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *);
+void xfs_buf_item_relse(struct xfs_buf *);
+bool xfs_buf_item_put(struct xfs_buf_log_item *);
+void xfs_buf_item_log(struct xfs_buf_log_item *, uint, uint);
+bool xfs_buf_item_dirty_format(struct xfs_buf_log_item *);
+void xfs_buf_attach_iodone(struct xfs_buf *,
+ void(*)(struct xfs_buf *, xfs_log_item_t *),
+ xfs_log_item_t *);
+void xfs_buf_iodone_callbacks(struct xfs_buf *);
+void xfs_buf_iodone(struct xfs_buf *, struct xfs_log_item *);
+bool xfs_buf_resubmit_failed_buffers(struct xfs_buf *,
+ struct list_head *);
+
+extern kmem_zone_t *xfs_buf_item_zone;
+
+#endif /* __XFS_BUF_ITEM_H__ */