609 	struct st_buffer *STbuffer;  in write_behind_check()  local
614 	STbuffer = STp->buffer;  in write_behind_check()
615 	if (!STbuffer->writing)  in write_behind_check()
626 	SRpnt = STbuffer->last_SRpnt;  in write_behind_check()
627 	STbuffer->last_SRpnt = NULL;  in write_behind_check()
633 	STbuffer->buffer_bytes -= STbuffer->writing;  in write_behind_check()
639 			STps->drv_block += STbuffer->writing / STp->block_size;  in write_behind_check()
642 	cmdstatp = &STbuffer->cmdstat;  in write_behind_check()
643 	if (STbuffer->syscall_result) {  in write_behind_check()
657 	STbuffer->writing = 0;  in write_behind_check()
662 				STbuffer->cmdstat.midlevel_result, retval);) /* end DEB */  in write_behind_check()
776 	struct st_buffer *STbuffer;  in flush_buffer()  local
779 	STbuffer = STp->buffer;  in flush_buffer()
3747 static int enlarge_buffer(struct st_buffer * STbuffer, int new_size, int need_dma)  in enlarge_buffer()  argument
3752 	if (new_size <= STbuffer->buffer_size)  in enlarge_buffer()
3755 	if (STbuffer->buffer_size <= PAGE_SIZE)  in enlarge_buffer()
3756 		normalize_buffer(STbuffer);  /* Avoid extra segment */  in enlarge_buffer()
3758 	max_segs = STbuffer->use_sg;  in enlarge_buffer()
3764 	if (STbuffer->cleared)  in enlarge_buffer()
3767 	if (STbuffer->frp_segs) {  in enlarge_buffer()
3768 		order = STbuffer->reserved_page_order;  in enlarge_buffer()
3776 		STbuffer->reserved_page_order = order;  in enlarge_buffer()
3781 		normalize_buffer(STbuffer);  in enlarge_buffer()
3782 		return enlarge_buffer(STbuffer, new_size, need_dma);  in enlarge_buffer()
3785 	for (segs = STbuffer->frp_segs, got = STbuffer->buffer_size;  in enlarge_buffer()
3791 			DEB(STbuffer->buffer_size = got);  in enlarge_buffer()
3792 			normalize_buffer(STbuffer);  in enlarge_buffer()
3796 		STbuffer->frp_segs += 1;  in enlarge_buffer()
3798 		STbuffer->buffer_size = got;  in enlarge_buffer()
3799 		STbuffer->reserved_pages[segs] = page;  in enlarge_buffer()
3802 	STbuffer->b_data = page_address(STbuffer->reserved_pages[0]);  in enlarge_buffer()
3821 static void normalize_buffer(struct st_buffer * STbuffer)  in normalize_buffer()  argument
3823 	int i, order = STbuffer->reserved_page_order;  in normalize_buffer()
3825 	for (i = 0; i < STbuffer->frp_segs; i++) {  in normalize_buffer()
3826 		__free_pages(STbuffer->reserved_pages[i], order);  in normalize_buffer()
3827 		STbuffer->buffer_size -= (PAGE_SIZE << order);  in normalize_buffer()
3829 	STbuffer->frp_segs = 0;  in normalize_buffer()
3830 	STbuffer->sg_segs = 0;  in normalize_buffer()
3831 	STbuffer->reserved_page_order = 0;  in normalize_buffer()
3832 	STbuffer->map_data.offset = 0;  in normalize_buffer()