182 static int must_snapshot_stable_pages(struct request_queue *q, struct bio *bio)  in must_snapshot_stable_pages()  argument
187 	if (!bdi_cap_stable_pages_required(&q->backing_dev_info))  in must_snapshot_stable_pages()
193 static int must_snapshot_stable_pages(struct request_queue *q, struct bio *bio)  in must_snapshot_stable_pages()  argument
199 static void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig,  in __blk_queue_bounce()  argument
211 		if (page_to_pfn(from.bv_page) > queue_bounce_pfn(q))  in __blk_queue_bounce()
221 		if (page_to_pfn(page) <= queue_bounce_pfn(q) && !force)  in __blk_queue_bounce()
224 		to->bv_page = mempool_alloc(pool, q->bounce_gfp);  in __blk_queue_bounce()
239 	trace_block_bio_bounce(q, *bio_orig);  in __blk_queue_bounce()
257 void blk_queue_bounce(struct request_queue *q, struct bio **bio_orig)  in blk_queue_bounce()  argument
268 	must_bounce = must_snapshot_stable_pages(q, *bio_orig);  in blk_queue_bounce()
275 	if (!(q->bounce_gfp & GFP_DMA)) {  in blk_queue_bounce()
276 		if (queue_bounce_pfn(q) >= blk_max_pfn && !must_bounce)  in blk_queue_bounce()
287 	__blk_queue_bounce(q, bio_orig, pool, must_bounce);  in blk_queue_bounce()