1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/md/dm-vdo/io-submitter.h b/drivers/md/dm-vdo/io-submitter.h
new file mode 100644
index 000000000000..80748699496f
--- /dev/null
+++ b/drivers/md/dm-vdo/io-submitter.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright 2023 Red Hat
+ */
+
+#ifndef VDO_IO_SUBMITTER_H
+#define VDO_IO_SUBMITTER_H
+
+#include <linux/bio.h>
+
+#include "types.h"
+
+struct io_submitter;
+
+int vdo_make_io_submitter(unsigned int thread_count, unsigned int rotation_interval,
+			  unsigned int max_requests_active, struct vdo *vdo,
+			  struct io_submitter **io_submitter);
+
+void vdo_cleanup_io_submitter(struct io_submitter *io_submitter);
+
+void vdo_free_io_submitter(struct io_submitter *io_submitter);
+
+void vdo_submit_vio(struct vdo_completion *completion);
+
+void vdo_submit_data_vio(struct data_vio *data_vio);
+
+void __submit_metadata_vio(struct vio *vio, physical_block_number_t physical,
+			   bio_end_io_t callback, vdo_action_fn error_handler,
+			   blk_opf_t operation, char *data);
+
+static inline void vdo_submit_metadata_vio(struct vio *vio, physical_block_number_t physical,
+					   bio_end_io_t callback, vdo_action_fn error_handler,
+					   blk_opf_t operation)
+{
+	__submit_metadata_vio(vio, physical, callback, error_handler,
+			      operation, vio->data);
+}
+
+static inline void vdo_submit_flush_vio(struct vio *vio, bio_end_io_t callback,
+					vdo_action_fn error_handler)
+{
+	/* FIXME: Can we just use REQ_OP_FLUSH? */
+	__submit_metadata_vio(vio, 0, callback, error_handler,
+			      REQ_OP_WRITE | REQ_PREFLUSH, NULL);
+}
+
+#endif /* VDO_IO_SUBMITTER_H */