666 	struct st_buffer *STbuffer;  in write_behind_check()  local
671 	STbuffer = STp->buffer;  in write_behind_check()
672 	if (!STbuffer->writing)  in write_behind_check()
683 	SRpnt = STbuffer->last_SRpnt;  in write_behind_check()
684 	STbuffer->last_SRpnt = NULL;  in write_behind_check()
690 	STbuffer->buffer_bytes -= STbuffer->writing;  in write_behind_check()
696 			STps->drv_block += STbuffer->writing / STp->block_size;  in write_behind_check()
699 	cmdstatp = &STbuffer->cmdstat;  in write_behind_check()
700 	if (STbuffer->syscall_result) {  in write_behind_check()
714 	STbuffer->writing = 0;  in write_behind_check()
719 				STbuffer->cmdstat.midlevel_result, retval);) /* end DEB */  in write_behind_check()
3906 static int enlarge_buffer(struct st_buffer * STbuffer, int new_size, int need_dma)  in enlarge_buffer()  argument
3911 	if (new_size <= STbuffer->buffer_size)  in enlarge_buffer()
3914 	if (STbuffer->buffer_size <= PAGE_SIZE)  in enlarge_buffer()
3915 		normalize_buffer(STbuffer);  /* Avoid extra segment */  in enlarge_buffer()
3917 	max_segs = STbuffer->use_sg;  in enlarge_buffer()
3923 	if (STbuffer->cleared)  in enlarge_buffer()
3926 	if (STbuffer->frp_segs) {  in enlarge_buffer()
3927 		order = STbuffer->reserved_page_order;  in enlarge_buffer()
3935 		STbuffer->reserved_page_order = order;  in enlarge_buffer()
3940 		normalize_buffer(STbuffer);  in enlarge_buffer()
3941 		return enlarge_buffer(STbuffer, new_size, need_dma);  in enlarge_buffer()
3944 	for (segs = STbuffer->frp_segs, got = STbuffer->buffer_size;  in enlarge_buffer()
3950 			DEB(STbuffer->buffer_size = got);  in enlarge_buffer()
3951 			normalize_buffer(STbuffer);  in enlarge_buffer()
3955 		STbuffer->frp_segs += 1;  in enlarge_buffer()
3957 		STbuffer->buffer_size = got;  in enlarge_buffer()
3958 		STbuffer->reserved_pages[segs] = page;  in enlarge_buffer()
3961 	STbuffer->b_data = page_address(STbuffer->reserved_pages[0]);  in enlarge_buffer()
3980 static void normalize_buffer(struct st_buffer * STbuffer)  in normalize_buffer()  argument
3982 	int i, order = STbuffer->reserved_page_order;  in normalize_buffer()
3984 	for (i = 0; i < STbuffer->frp_segs; i++) {  in normalize_buffer()
3985 		__free_pages(STbuffer->reserved_pages[i], order);  in normalize_buffer()
3986 		STbuffer->buffer_size -= (PAGE_SIZE << order);  in normalize_buffer()
3988 	STbuffer->frp_segs = 0;  in normalize_buffer()
3989 	STbuffer->sg_segs = 0;  in normalize_buffer()
3990 	STbuffer->reserved_page_order = 0;  in normalize_buffer()
3991 	STbuffer->map_data.offset = 0;  in normalize_buffer()