1 files changed, 24 insertions, 0 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index ebed9eb3e567..84b0a052da48 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -68,6 +68,30 @@ struct btrfs_dio_data {
 	bool nocow_done;
 };
 
+struct btrfs_dio_private {
+	struct inode *inode;
+
+	/*
+	 * Since DIO can use anonymous page, we cannot use page_offset() to
+	 * grab the file offset, thus need a dedicated member for file offset.
+	 */
+	u64 file_offset;
+	/* Used for bio::bi_size */
+	u32 bytes;
+
+	/*
+	 * References to this structure. There is one reference per in-flight
+	 * bio plus one while we're still setting up.
+	 */
+	refcount_t refs;
+
+	/* dio_bio came from fs/direct-io.c */
+	struct bio *dio_bio;
+
+	/* Array of checksums */
+	u8 csums[];
+};
+
 struct btrfs_rename_ctx {
 	/* Output field. Stores the index number of the old directory entry. */
 	u64 index;