98 	tnf_block_header_t 	*block;  in tnfw_b_alloc_block()  local
157 			block = (tnf_block_header_t *) ((char *) fh + i);  in tnfw_b_alloc_block()
158 			if (!tnfw_b_get_lock(&block->A_lock) &&  in tnfw_b_alloc_block()
159 			    block->generation == 0)  in tnfw_b_alloc_block()
170 			block->tag = TNFW_B_TAG_DIFF(  in tnfw_b_alloc_block()
173 			block->generation = TNF_TAG_GENERATION_NUM;  in tnfw_b_alloc_block()
174 			block->bytes_valid = sizeof (tnf_block_header_t);  in tnfw_b_alloc_block()
175 			block->next_block = NULL;  in tnfw_b_alloc_block()
176 			tnfw_b_clear_lock(&block->A_lock);  in tnfw_b_alloc_block()
177 			return (block);  in tnfw_b_alloc_block()
202 		block = (tnf_block_header_t *)  in tnfw_b_alloc_block()
206 		if (block->generation == TNF_TAG_GENERATION_NUM)  in tnfw_b_alloc_block()
208 		else if (block->generation >= generation)  in tnfw_b_alloc_block()
210 		else if (tnfw_b_get_lock(&block->A_lock))  in tnfw_b_alloc_block()
212 		else if (block->generation == TNF_TAG_GENERATION_NUM)  in tnfw_b_alloc_block()
214 		else if (block->generation >= generation)  in tnfw_b_alloc_block()
216 		else if (tnfw_b_get_lock(&block->B_lock)) {  in tnfw_b_alloc_block()
217 			tnfw_b_clear_lock(&block->A_lock);  in tnfw_b_alloc_block()
223 		if (block->generation < generation &&  in tnfw_b_alloc_block()
224 		    !tnfw_b_get_lock(&block->A_lock)) {  in tnfw_b_alloc_block()
225 			if (block->generation < generation &&  in tnfw_b_alloc_block()
226 			    !tnfw_b_get_lock(&block->B_lock)) {  in tnfw_b_alloc_block()
229 				tnfw_b_clear_lock(&block->A_lock);  in tnfw_b_alloc_block()
252 	    thr_self(), blocknum, generation, block);  in tnfw_b_alloc_block()
255 	block->tag = TNFW_B_TAG_DIFF(forwarding_ptrs.fw_block_header, fh);  in tnfw_b_alloc_block()
256 	block->generation = (istag) ? TNF_TAG_GENERATION_NUM : generation;  in tnfw_b_alloc_block()
257 	block->bytes_valid = sizeof (tnf_block_header_t);  in tnfw_b_alloc_block()
258 	block->next_block = NULL;  in tnfw_b_alloc_block()
260 		tnfw_b_clear_lock(&block->A_lock);  in tnfw_b_alloc_block()
262 	tnfw_b_clear_lock(&block->B_lock);  in tnfw_b_alloc_block()
307 	return (block);  in tnfw_b_alloc_block()
343 	tnf_block_header_t *block;  in tnfw_b_init_buffer()  local
417 			block =	(tnf_block_header_t *)  in tnfw_b_init_buffer()
420 			block->tag = 0;  in tnfw_b_init_buffer()
421 			block->generation = 0;  in tnfw_b_init_buffer()
422 			tnfw_b_clear_lock(&block->A_lock);  in tnfw_b_init_buffer()
423 			tnfw_b_clear_lock(&block->B_lock);  in tnfw_b_init_buffer()
443 	tnf_block_header_t *block, *new_block;  in tnfw_b_alloc()  local
469 	block = pos->tnfw_w_block;  in tnfw_b_alloc()
478 	if (block != NULL && wcb->tnfw_w_a_lock_released) {  in tnfw_b_alloc()
480 		if (!tnfw_b_get_lock(&block->A_lock)) {  in tnfw_b_alloc()
482 			if (wcb->tnfw_w_generation != block->generation) {  in tnfw_b_alloc()
483 				tnfw_b_clear_lock(&block->A_lock);  in tnfw_b_alloc()
491 	if (block == NULL || offset + size > fh->com.block_size) {  in tnfw_b_alloc()
501 		    wcb, new_block, block, pos->tnfw_w_uncommitted);  in tnfw_b_alloc()
503 		if (block != NULL) {  in tnfw_b_alloc()
506 			(void) bzero((char *)block + offset,  in tnfw_b_alloc()
509 			(void) memset((char *)block + offset, 0,  in tnfw_b_alloc()
516 					tnfw_b_clear_lock(&block->A_lock);  in tnfw_b_alloc()
519 				tnfw_b_clear_lock(&block->A_lock);  in tnfw_b_alloc()
528 			block->next_block = new_block;  in tnfw_b_alloc()
533 		pos->tnfw_w_uncommitted = block;  in tnfw_b_alloc()
559 	tnf_block_header_t *block;  in tnfw_b_xcommit()  local
573 	block = pos->tnfw_w_uncommitted;  in tnfw_b_xcommit()
574 	while (block && (block != pos->tnfw_w_block)) {  in tnfw_b_xcommit()
577 		    block->generation, block, pos->tnfw_w_block);  in tnfw_b_xcommit()
579 		block->bytes_valid = fh->com.block_size;  in tnfw_b_xcommit()
580 		pos->tnfw_w_uncommitted = block->next_block;  in tnfw_b_xcommit()
581 		tnfw_b_clear_lock(&block->A_lock);  in tnfw_b_xcommit()
582 		block = pos->tnfw_w_uncommitted;  in tnfw_b_xcommit()
584 	if (block != NULL) {  in tnfw_b_xcommit()
587 		    block->generation, block, pos->tnfw_w_write_off);  in tnfw_b_xcommit()
589 		block->bytes_valid = pos->tnfw_w_write_off;  in tnfw_b_xcommit()
594 		wcb->tnfw_w_generation = block->generation;  in tnfw_b_xcommit()
595 		tnfw_b_clear_lock(&block->A_lock);  in tnfw_b_xcommit()
605 	block = pos->tnfw_w_uncommitted;  in tnfw_b_xcommit()
606 	while (block && (block != pos->tnfw_w_block)) {  in tnfw_b_xcommit()
609 		    thr_self(), block, pos->tnfw_w_block);  in tnfw_b_xcommit()
611 		block->bytes_valid = fh->com.block_size;  in tnfw_b_xcommit()
612 		pos->tnfw_w_uncommitted = block->next_block;  in tnfw_b_xcommit()
613 		block = pos->tnfw_w_uncommitted;  in tnfw_b_xcommit()
615 	if (block != NULL)  in tnfw_b_xcommit()
616 		block->bytes_valid = pos->tnfw_w_write_off;  in tnfw_b_xcommit()
628 	tnf_block_header_t *block, *next;  in tnfw_b_xabort()  local
633 	block = pos->tnfw_w_block = pos->tnfw_w_uncommitted;  in tnfw_b_xabort()
634 	if (block != NULL) {  in tnfw_b_xabort()
635 		pos->tnfw_w_write_off = block->bytes_valid;  in tnfw_b_xabort()
638 			tnfw_b_clear_lock(&block->A_lock);  in tnfw_b_xabort()
639 			wcb->tnfw_w_generation = block->generation;  in tnfw_b_xabort()
643 		block = block->next_block;  in tnfw_b_xabort()
645 	while (block != NULL) {  in tnfw_b_xabort()
646 		next = block->next_block;  in tnfw_b_xabort()
647 		tnfw_b_clear_lock(&block->A_lock);  in tnfw_b_xabort()
648 		block = next;  in tnfw_b_xabort()
652 	block = pos->tnfw_w_uncommitted;  in tnfw_b_xabort()
653 	while (block && (block != pos->tnfw_w_block)) {  in tnfw_b_xabort()
654 		block->bytes_valid = fh->com.block_size;  in tnfw_b_xabort()
655 		pos->tnfw_w_uncommitted = block->next_block;  in tnfw_b_xabort()
656 		block = pos->tnfw_w_uncommitted;  in tnfw_b_xabort()
658 	if (block != NULL)  in tnfw_b_xabort()
659 		block->bytes_valid = pos->tnfw_w_write_off;  in tnfw_b_xabort()