1 files changed, 109 insertions, 0 deletions
diff --git a/fs/bcachefs/ec.h b/fs/bcachefs/ec.h
new file mode 100644
index 000000000000..bcf06529dcfc
--- /dev/null
+++ b/fs/bcachefs/ec.h
@@ -0,0 +1,109 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BCACHEFS_EC_H
+#define _BCACHEFS_EC_H
+
+#include "ec_types.h"
+#include "keylist_types.h"
+
+const char *bch2_ec_key_invalid(const struct bch_fs *, struct bkey_s_c);
+void bch2_ec_key_to_text(struct printbuf *, struct bch_fs *,
+			 struct bkey_s_c);
+
+#define bch2_bkey_ec_ops (struct bkey_ops) {		\
+	.key_invalid	= bch2_ec_key_invalid,		\
+	.val_to_text	= bch2_ec_key_to_text,		\
+}
+
+struct bch_read_bio;
+
+struct ec_stripe_buf {
+	/* might not be buffering the entire stripe: */
+	unsigned		offset;
+	unsigned		size;
+	unsigned long		valid[BITS_TO_LONGS(EC_STRIPE_MAX)];
+
+	void			*data[EC_STRIPE_MAX];
+
+	union {
+		struct bkey_i_stripe	key;
+		u64			pad[255];
+	};
+};
+
+struct ec_stripe_head;
+
+struct ec_stripe_new {
+	struct bch_fs		*c;
+	struct ec_stripe_head	*h;
+	struct mutex		lock;
+	struct list_head	list;
+
+	/* counts in flight writes, stripe is created when pin == 0 */
+	atomic_t		pin;
+
+	int			err;
+
+	unsigned long		blocks_allocated[BITS_TO_LONGS(EC_STRIPE_MAX)];
+
+	struct open_buckets	blocks;
+	struct open_buckets	parity;
+
+	struct keylist		keys;
+	u64			inline_keys[BKEY_U64s * 8];
+
+	struct ec_stripe_buf	stripe;
+};
+
+struct ec_stripe_head {
+	struct list_head	list;
+	struct mutex		lock;
+
+	struct list_head	stripes;
+
+	unsigned		target;
+	unsigned		algo;
+	unsigned		redundancy;
+
+	struct bch_devs_mask	devs;
+	unsigned		nr_active_devs;
+
+	unsigned		blocksize;
+
+	struct dev_stripe_state	block_stripe;
+	struct dev_stripe_state	parity_stripe;
+
+	struct open_buckets	blocks;
+	struct open_buckets	parity;
+
+	struct ec_stripe_new	*s;
+};
+
+int bch2_ec_read_extent(struct bch_fs *, struct bch_read_bio *);
+
+void *bch2_writepoint_ec_buf(struct bch_fs *, struct write_point *);
+void bch2_ec_add_backpointer(struct bch_fs *, struct write_point *,
+			     struct bpos, unsigned);
+
+void bch2_ec_bucket_written(struct bch_fs *, struct open_bucket *);
+void bch2_ec_bucket_cancel(struct bch_fs *, struct open_bucket *);
+
+int bch2_ec_stripe_new_alloc(struct bch_fs *, struct ec_stripe_head *);
+
+void bch2_ec_stripe_head_put(struct ec_stripe_head *);
+struct ec_stripe_head *bch2_ec_stripe_head_get(struct bch_fs *, unsigned,
+					       unsigned, unsigned);
+
+void bch2_stripes_heap_update(struct bch_fs *, struct ec_stripe *, size_t);
+void bch2_stripes_heap_del(struct bch_fs *, struct ec_stripe *, size_t);
+void bch2_stripes_heap_insert(struct bch_fs *, struct ec_stripe *, size_t);
+
+void bch2_ec_stop_dev(struct bch_fs *, struct bch_dev *);
+
+void bch2_ec_flush_new_stripes(struct bch_fs *);
+
+int bch2_fs_ec_start(struct bch_fs *);
+
+void bch2_fs_ec_exit(struct bch_fs *);
+int bch2_fs_ec_init(struct bch_fs *);
+
+#endif /* _BCACHEFS_EC_H */