move Rust sources to top level, C sources into c_src

[bcachefs-tools-debian] / c_src / libbcachefs / btree_write_buffer_types.h

diff --git a/c_src/libbcachefs/btree_write_buffer_types.h b/c_src/libbcachefs/btree_write_buffer_types.h
new file mode 100644 (file)
index 0000000..9b9433d
--- /dev/null
+++ b/c_src/libbcachefs/btree_write_buffer_types.h
@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BCACHEFS_BTREE_WRITE_BUFFER_TYPES_H
+#define _BCACHEFS_BTREE_WRITE_BUFFER_TYPES_H
+
+#include "darray.h"
+#include "journal_types.h"
+
+#define BTREE_WRITE_BUFERED_VAL_U64s_MAX       4
+#define BTREE_WRITE_BUFERED_U64s_MAX   (BKEY_U64s + BTREE_WRITE_BUFERED_VAL_U64s_MAX)
+
+struct wb_key_ref {
+union {
+       struct {
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+               unsigned                        idx:24;
+               u8                              pos[sizeof(struct bpos)];
+               enum btree_id                   btree:8;
+#else
+               enum btree_id                   btree:8;
+               u8                              pos[sizeof(struct bpos)];
+               unsigned                        idx:24;
+#endif
+       } __packed;
+       struct {
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+               u64 lo;
+               u64 mi;
+               u64 hi;
+#else
+               u64 hi;
+               u64 mi;
+               u64 lo;
+#endif
+       };
+};
+};
+
+struct btree_write_buffered_key {
+       enum btree_id                   btree:8;
+       u64                             journal_seq:56;
+       __BKEY_PADDED(k, BTREE_WRITE_BUFERED_VAL_U64s_MAX);
+};
+
+struct btree_write_buffer_keys {
+       DARRAY(struct btree_write_buffered_key) keys;
+       struct journal_entry_pin        pin;
+       struct mutex                    lock;
+};
+
+struct btree_write_buffer {
+       DARRAY(struct wb_key_ref)       sorted;
+       struct btree_write_buffer_keys  inc;
+       struct btree_write_buffer_keys  flushing;
+       struct work_struct              flush_work;
+};
+
+#endif /* _BCACHEFS_BTREE_WRITE_BUFFER_TYPES_H */