1 files changed, 90 insertions, 0 deletions
diff --git a/libbcache/io.h b/libbcache/io.h
new file mode 100644
index 00000000..b7668b4e
--- /dev/null
+++ b/libbcache/io.h
@@ -0,0 +1,90 @@
+#ifndef _BCACHE_IO_H
+#define _BCACHE_IO_H
+
+#include "io_types.h"
+
+#define to_wbio(_bio)			\
+	container_of((_bio), struct bch_write_bio, bio)
+
+#define to_rbio(_bio)			\
+	container_of((_bio), struct bch_read_bio, bio)
+
+void bch_bio_free_pages_pool(struct cache_set *, struct bio *);
+void bch_bio_alloc_pages_pool(struct cache_set *, struct bio *, size_t);
+
+enum bch_write_flags {
+	BCH_WRITE_ALLOC_NOWAIT		= (1 << 0),
+	BCH_WRITE_DISCARD		= (1 << 1),
+	BCH_WRITE_CACHED		= (1 << 2),
+	BCH_WRITE_FLUSH			= (1 << 3),
+	BCH_WRITE_DISCARD_ON_ERROR	= (1 << 4),
+	BCH_WRITE_DATA_COMPRESSED	= (1 << 5),
+
+	/* Internal: */
+	BCH_WRITE_JOURNAL_SEQ_PTR	= (1 << 6),
+	BCH_WRITE_DONE			= (1 << 7),
+	BCH_WRITE_LOOPED		= (1 << 8),
+};
+
+static inline u64 *op_journal_seq(struct bch_write_op *op)
+{
+	return (op->flags & BCH_WRITE_JOURNAL_SEQ_PTR)
+		? op->journal_seq_p : &op->journal_seq;
+}
+
+static inline struct write_point *foreground_write_point(struct cache_set *c,
+							 unsigned long v)
+{
+	return c->write_points +
+		hash_long(v, ilog2(ARRAY_SIZE(c->write_points)));
+}
+
+void bch_write_op_init(struct bch_write_op *, struct cache_set *,
+		       struct bch_write_bio *,
+		       struct disk_reservation, struct write_point *,
+		       struct bpos, u64 *, unsigned);
+void bch_write(struct closure *);
+
+struct cache_promote_op;
+
+struct extent_pick_ptr;
+
+void bch_read_extent_iter(struct cache_set *, struct bch_read_bio *,
+			  struct bvec_iter, struct bkey_s_c k,
+			  struct extent_pick_ptr *, unsigned);
+
+static inline void bch_read_extent(struct cache_set *c,
+				   struct bch_read_bio *orig,
+				   struct bkey_s_c k,
+				   struct extent_pick_ptr *pick,
+				   unsigned flags)
+{
+	bch_read_extent_iter(c, orig, orig->bio.bi_iter,
+			     k, pick, flags);
+}
+
+enum bch_read_flags {
+	BCH_READ_FORCE_BOUNCE		= 1 << 0,
+	BCH_READ_RETRY_IF_STALE		= 1 << 1,
+	BCH_READ_PROMOTE		= 1 << 2,
+	BCH_READ_IS_LAST		= 1 << 3,
+	BCH_READ_MAY_REUSE_BIO		= 1 << 4,
+};
+
+void bch_read(struct cache_set *, struct bch_read_bio *, u64);
+
+void bch_generic_make_request(struct bio *, struct cache_set *);
+void bch_bio_submit_work(struct work_struct *);
+void bch_submit_wbio_replicas(struct bch_write_bio *, struct cache_set *,
+			      const struct bkey_i *, bool);
+
+int bch_discard(struct cache_set *, struct bpos, struct bpos,
+		u64, struct disk_reservation *,
+		struct extent_insert_hook *, u64 *);
+
+void bch_read_retry_work(struct work_struct *);
+void bch_wake_delayed_writes(unsigned long data);
+
+void bch_bio_decompress_work(struct work_struct *);
+
+#endif /* _BCACHE_IO_H */