Lines Matching defs:STbuffer

682 	struct st_buffer *STbuffer;
687 	STbuffer = STp->buffer;
688 	if (!STbuffer->writing)
699 	SRpnt = STbuffer->last_SRpnt;
700 	STbuffer->last_SRpnt = NULL;
706 	STbuffer->buffer_bytes -= STbuffer->writing;
712 			STps->drv_block += STbuffer->writing / STp->block_size;
715 	cmdstatp = &STbuffer->cmdstat;
716 	if (STbuffer->syscall_result) {
730 	STbuffer->writing = 0;
735 				STbuffer->cmdstat.midlevel_result, retval);) /* end DEB */
4012 static int enlarge_buffer(struct st_buffer * STbuffer, int new_size)
4017 	if (new_size <= STbuffer->buffer_size)
4020 	if (STbuffer->buffer_size <= PAGE_SIZE)
4021 		normalize_buffer(STbuffer);  /* Avoid extra segment */
4023 	max_segs = STbuffer->use_sg;
4027 	if (STbuffer->cleared)
4030 	if (STbuffer->frp_segs) {
4031 		order = STbuffer->reserved_page_order;
4039 		STbuffer->reserved_page_order = order;
4044 		normalize_buffer(STbuffer);
4045 		return enlarge_buffer(STbuffer, new_size);
4048 	for (segs = STbuffer->frp_segs, got = STbuffer->buffer_size;
4054 			DEB(STbuffer->buffer_size = got);
4055 			normalize_buffer(STbuffer);
4059 		STbuffer->frp_segs += 1;
4061 		STbuffer->buffer_size = got;
4062 		STbuffer->reserved_pages[segs] = page;
4065 	STbuffer->b_data = page_address(STbuffer->reserved_pages[0]);
4084 static void normalize_buffer(struct st_buffer * STbuffer)
4086 	int i, order = STbuffer->reserved_page_order;
4088 	for (i = 0; i < STbuffer->frp_segs; i++) {
4089 		__free_pages(STbuffer->reserved_pages[i], order);
4090 		STbuffer->buffer_size -= (PAGE_SIZE << order);
4092 	STbuffer->frp_segs = 0;
4093 	STbuffer->sg_segs = 0;
4094 	STbuffer->reserved_page_order = 0;
4095 	STbuffer->map_data.offset = 0;