Merge tag 'for-6.9/dm-vdo' of git://git.kernel.org/pub/scm/linux/kernel/git/device...

[sfrench/cifs-2.6.git] / drivers / md / dm-vdo / io-submitter.h

diff --git a/drivers/md/dm-vdo/io-submitter.h b/drivers/md/dm-vdo/io-submitter.h
new file mode 100644 (file)
index 0000000..8074869
--- /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 */