bcachefs: bkey_for_each_ptr() now declares loop iter

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/btree_gc.c

@@ -1844,7 +1844,6 @@ static int gc_btree_gens_key(struct btree_trans *trans,
 {
 	struct bch_fs *c = trans->c;
 	struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
-	const struct bch_extent_ptr *ptr;
 	struct bkey_i *u;
 	int ret;
 

fs/bcachefs/btree_io.c

@@ -934,7 +934,6 @@ int bch2_btree_node_read_done(struct bch_fs *c, struct bch_dev *ca,
 	struct sort_iter *iter;
 	struct btree_node *sorted;
 	struct bkey_packed *k;
-	struct bch_extent_ptr *ptr;
 	struct bset *i;
 	bool used_mempool, blacklisted;
 	bool updated_range = b->key.k.type == KEY_TYPE_btree_ptr_v2 &&
@@ -1896,7 +1895,6 @@ static int validate_bset_for_write(struct bch_fs *c, struct btree *b,
 static void btree_write_submit(struct work_struct *work)
 {
 	struct btree_write_bio *wbio = container_of(work, struct btree_write_bio, work);
-	struct bch_extent_ptr *ptr;
 	BKEY_PADDED_ONSTACK(k, BKEY_BTREE_PTR_VAL_U64s_MAX) tmp;
 
 	bkey_copy(&tmp.k, &wbio->key);

fs/bcachefs/data_update.c

@@ -356,7 +356,6 @@ void bch2_data_update_exit(struct data_update *update)
 	struct bch_fs *c = update->op.c;
 	struct bkey_ptrs_c ptrs =
 		bch2_bkey_ptrs_c(bkey_i_to_s_c(update->k.k));
-	const struct bch_extent_ptr *ptr;
 
 	bkey_for_each_ptr(ptrs, ptr) {
 		if (c->opts.nocow_enabled)
@@ -377,7 +376,6 @@ static void bch2_update_unwritten_extent(struct btree_trans *trans,
 	struct bio *bio = &update->op.wbio.bio;
 	struct bkey_i_extent *e;
 	struct write_point *wp;
-	struct bch_extent_ptr *ptr;
 	struct closure cl;
 	struct btree_iter iter;
 	struct bkey_s_c k;
@@ -509,7 +507,6 @@ int bch2_data_update_init(struct btree_trans *trans,
 	struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
 	const union bch_extent_entry *entry;
 	struct extent_ptr_decoded p;
-	const struct bch_extent_ptr *ptr;
 	unsigned i, reserve_sectors = k.k->size * data_opts.extra_replicas;
 	unsigned ptrs_locked = 0;
 	int ret = 0;
@@ -655,7 +652,6 @@ int bch2_data_update_init(struct btree_trans *trans,
 void bch2_data_update_opts_normalize(struct bkey_s_c k, struct data_update_opts *opts)
 {
 	struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
-	const struct bch_extent_ptr *ptr;
 	unsigned i = 0;
 
 	bkey_for_each_ptr(ptrs, ptr) {

fs/bcachefs/ec.c

@@ -161,7 +161,6 @@ static const struct bch_extent_ptr *bkey_matches_stripe(struct bch_stripe *s,
 						struct bkey_s_c k, unsigned *block)
 {
 	struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
-	const struct bch_extent_ptr *ptr;
 	unsigned i, nr_data = s->nr_blocks - s->nr_redundant;
 
 	bkey_for_each_ptr(ptrs, ptr)

fs/bcachefs/extents.c

@@ -843,7 +843,6 @@ void bch2_bkey_drop_device_noerror(struct bkey_s k, unsigned dev)
 const struct bch_extent_ptr *bch2_bkey_has_device_c(struct bkey_s_c k, unsigned dev)
 {
 	struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
-	const struct bch_extent_ptr *ptr;
 
 	bkey_for_each_ptr(ptrs, ptr)
 		if (ptr->dev == dev)
@@ -855,7 +854,6 @@ const struct bch_extent_ptr *bch2_bkey_has_device_c(struct bkey_s_c k, unsigned
 bool bch2_bkey_has_target(struct bch_fs *c, struct bkey_s_c k, unsigned target)
 {
 	struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
-	const struct bch_extent_ptr *ptr;
 
 	bkey_for_each_ptr(ptrs, ptr)
 		if (bch2_dev_in_target(c, ptr->dev, target) &&
@@ -1065,7 +1063,6 @@ static int extent_ptr_invalid(struct bch_fs *c,
 			      struct printbuf *err)
 {
 	struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
-	const struct bch_extent_ptr *ptr2;
 	u64 bucket;
 	u32 bucket_offset;
 	struct bch_dev *ca;
@@ -1307,7 +1304,6 @@ unsigned bch2_bkey_ptrs_need_rebalance(struct bch_fs *c, struct bkey_s_c k,
 	}
 incompressible:
 	if (target && bch2_target_accepts_data(c, BCH_DATA_user, target)) {
-		const struct bch_extent_ptr *ptr;
 		unsigned i = 0;
 
 		bkey_for_each_ptr(ptrs, ptr) {

fs/bcachefs/extents.h

@@ -300,7 +300,7 @@ static inline struct bkey_ptrs bch2_bkey_ptrs(struct bkey_s k)
 	bkey_extent_entry_for_each_from(_p, _entry, _p.start)
 
 #define __bkey_for_each_ptr(_start, _end, _ptr)				\
-	for ((_ptr) = (_start);						\
+	for (typeof(_start) (_ptr) = (_start);				\
 	     ((_ptr) = __bkey_ptr_next(_ptr, _end));			\
 	     (_ptr)++)
 
@@ -547,7 +547,6 @@ static inline bool bkey_extent_is_allocation(const struct bkey *k)
 static inline bool bkey_extent_is_unwritten(struct bkey_s_c k)
 {
 	struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
-	const struct bch_extent_ptr *ptr;
 
 	bkey_for_each_ptr(ptrs, ptr)
 		if (ptr->unwritten)
@@ -565,7 +564,6 @@ static inline struct bch_devs_list bch2_bkey_devs(struct bkey_s_c k)
 {
 	struct bch_devs_list ret = (struct bch_devs_list) { 0 };
 	struct bkey_ptrs_c p = bch2_bkey_ptrs_c(k);
-	const struct bch_extent_ptr *ptr;
 
 	bkey_for_each_ptr(p, ptr)
 		ret.data[ret.nr++] = ptr->dev;
@@ -577,7 +575,6 @@ static inline struct bch_devs_list bch2_bkey_dirty_devs(struct bkey_s_c k)
 {
 	struct bch_devs_list ret = (struct bch_devs_list) { 0 };
 	struct bkey_ptrs_c p = bch2_bkey_ptrs_c(k);
-	const struct bch_extent_ptr *ptr;
 
 	bkey_for_each_ptr(p, ptr)
 		if (!ptr->cached)
@@ -590,7 +587,6 @@ static inline struct bch_devs_list bch2_bkey_cached_devs(struct bkey_s_c k)
 {
 	struct bch_devs_list ret = (struct bch_devs_list) { 0 };
 	struct bkey_ptrs_c p = bch2_bkey_ptrs_c(k);
-	const struct bch_extent_ptr *ptr;
 
 	bkey_for_each_ptr(p, ptr)
 		if (ptr->cached)

fs/bcachefs/io_misc.c

@@ -74,7 +74,6 @@ int bch2_extent_fallocate(struct btree_trans *trans,
 		struct bkey_i_extent *e;
 		struct bch_devs_list devs_have;
 		struct write_point *wp;
-		struct bch_extent_ptr *ptr;
 
 		devs_have.nr = 0;
 

fs/bcachefs/io_write.c

@@ -396,16 +396,14 @@ void bch2_submit_wbio_replicas(struct bch_write_bio *wbio, struct bch_fs *c,
 			       bool nocow)
 {
 	struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(bkey_i_to_s_c(k));
-	const struct bch_extent_ptr *ptr;
 	struct bch_write_bio *n;
-	struct bch_dev *ca;
 
 	BUG_ON(c->opts.nochanges);
 
 	bkey_for_each_ptr(ptrs, ptr) {
 		BUG_ON(!bch2_dev_exists2(c, ptr->dev));
 
-		ca = bch_dev_bkey_exists(c, ptr->dev);
+		struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev);
 
 		if (to_entry(ptr + 1) < ptrs.end) {
 			n = to_wbio(bio_alloc_clone(NULL, &wbio->bio,
@@ -1108,7 +1106,6 @@ static bool bch2_extent_is_writeable(struct bch_write_op *op,
 static inline void bch2_nocow_write_unlock(struct bch_write_op *op)
 {
 	struct bch_fs *c = op->c;
-	const struct bch_extent_ptr *ptr;
 	struct bkey_i *k;
 
 	for_each_keylist_key(&op->insert_keys, k) {
@@ -1127,25 +1124,20 @@ static int bch2_nocow_write_convert_one_unwritten(struct btree_trans *trans,
 						  struct bkey_s_c k,
 						  u64 new_i_size)
 {
-	struct bkey_i *new;
-	struct bkey_ptrs ptrs;
-	struct bch_extent_ptr *ptr;
-	int ret;
-
 	if (!bch2_extents_match(bkey_i_to_s_c(orig), k)) {
 		/* trace this */
 		return 0;
 	}
 
-	new = bch2_bkey_make_mut_noupdate(trans, k);
-	ret = PTR_ERR_OR_ZERO(new);
+	struct bkey_i *new = bch2_bkey_make_mut_noupdate(trans, k);
+	int ret = PTR_ERR_OR_ZERO(new);
 	if (ret)
 		return ret;
 
 	bch2_cut_front(bkey_start_pos(&orig->k), new);
 	bch2_cut_back(orig->k.p, new);
 
-	ptrs = bch2_bkey_ptrs(bkey_i_to_s(new));
+	struct bkey_ptrs ptrs = bch2_bkey_ptrs(bkey_i_to_s(new));
 	bkey_for_each_ptr(ptrs, ptr)
 		ptr->unwritten = 0;
 
@@ -1225,8 +1217,6 @@ static void bch2_nocow_write(struct bch_write_op *op)
 	struct btree_trans *trans;
 	struct btree_iter iter;
 	struct bkey_s_c k;
-	struct bkey_ptrs_c ptrs;
-	const struct bch_extent_ptr *ptr;
 	DARRAY_PREALLOCATED(struct bucket_to_lock, 3) buckets;
 	u32 snapshot;
 	struct bucket_to_lock *stale_at;
@@ -1269,7 +1259,7 @@ static void bch2_nocow_write(struct bch_write_op *op)
 			break;
 
 		/* Get iorefs before dropping btree locks: */
-		ptrs = bch2_bkey_ptrs_c(k);
+		struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
 		bkey_for_each_ptr(ptrs, ptr) {
 			struct bpos b = PTR_BUCKET_POS(c, ptr);
 			struct nocow_lock_bucket *l =

fs/bcachefs/journal_io.c

@@ -1678,7 +1678,6 @@ static CLOSURE_CALLBACK(do_journal_write)
 	struct bch_fs *c = container_of(j, struct bch_fs, journal);
 	struct bch_dev *ca;
 	struct journal_buf *w = journal_last_unwritten_buf(j);
-	struct bch_extent_ptr *ptr;
 	struct bio *bio;
 	unsigned sectors = vstruct_sectors(w->data, c->block_bits);
 

fs/bcachefs/move.c

@@ -695,9 +695,6 @@ int bch2_evacuate_bucket(struct moving_context *ctxt,
 			break;
 
 		if (!bp.level) {
-			const struct bch_extent_ptr *ptr;
-			unsigned i = 0;
-
 			k = bch2_backpointer_get_key(trans, &iter, bp_pos, bp, 0);
 			ret = bkey_err(k);
 			if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
@@ -720,6 +717,7 @@ int bch2_evacuate_bucket(struct moving_context *ctxt,
 			data_opts.target	= io_opts.background_target;
 			data_opts.rewrite_ptrs = 0;
 
+			unsigned i = 0;
 			bkey_for_each_ptr(bch2_bkey_ptrs_c(k), ptr) {
 				if (ptr->dev == bucket.inode) {
 					data_opts.rewrite_ptrs |= 1U << i;
@@ -890,7 +888,6 @@ static bool migrate_pred(struct bch_fs *c, void *arg,
 			 struct data_update_opts *data_opts)
 {
 	struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
-	const struct bch_extent_ptr *ptr;
 	struct bch_ioctl_data *op = arg;
 	unsigned i = 0;