101 static void copy_to_high_bio_irq(struct bio *to, struct bio *from)  in copy_to_high_bio_irq()
125 static void bounce_end_io(struct bio *bio, mempool_t *pool, int err)  in bounce_end_io()  argument
127 	struct bio *bio_orig = bio->bi_private;  in bounce_end_io()
131 	if (test_bit(BIO_EOPNOTSUPP, &bio->bi_flags))  in bounce_end_io()
137 	bio_for_each_segment_all(bvec, bio, i) {  in bounce_end_io()
147 	bio_put(bio);  in bounce_end_io()
150 static void bounce_end_io_write(struct bio *bio, int err)  in bounce_end_io_write()  argument
152 	bounce_end_io(bio, page_pool, err);  in bounce_end_io_write()
155 static void bounce_end_io_write_isa(struct bio *bio, int err)  in bounce_end_io_write_isa()  argument
158 	bounce_end_io(bio, isa_page_pool, err);  in bounce_end_io_write_isa()
161 static void __bounce_end_io_read(struct bio *bio, mempool_t *pool, int err)  in __bounce_end_io_read()  argument
163 	struct bio *bio_orig = bio->bi_private;  in __bounce_end_io_read()
165 	if (test_bit(BIO_UPTODATE, &bio->bi_flags))  in __bounce_end_io_read()
166 		copy_to_high_bio_irq(bio_orig, bio);  in __bounce_end_io_read()
168 	bounce_end_io(bio, pool, err);  in __bounce_end_io_read()
171 static void bounce_end_io_read(struct bio *bio, int err)  in bounce_end_io_read()  argument
173 	__bounce_end_io_read(bio, page_pool, err);  in bounce_end_io_read()
176 static void bounce_end_io_read_isa(struct bio *bio, int err)  in bounce_end_io_read_isa()  argument
178 	__bounce_end_io_read(bio, isa_page_pool, err);  in bounce_end_io_read_isa()
182 static int must_snapshot_stable_pages(struct request_queue *q, struct bio *bio)  in must_snapshot_stable_pages()  argument
184 	if (bio_data_dir(bio) != WRITE)  in must_snapshot_stable_pages()
190 	return test_bit(BIO_SNAP_STABLE, &bio->bi_flags);  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()
202 	struct bio *bio;  in __blk_queue_bounce()  local
216 	bio = bio_clone_bioset(*bio_orig, GFP_NOIO, fs_bio_set);  in __blk_queue_bounce()
218 	bio_for_each_segment_all(to, bio, i) {  in __blk_queue_bounce()
241 	bio->bi_flags |= (1 << BIO_BOUNCED);  in __blk_queue_bounce()
244 		bio->bi_end_io = bounce_end_io_write;  in __blk_queue_bounce()
246 			bio->bi_end_io = bounce_end_io_read;  in __blk_queue_bounce()
248 		bio->bi_end_io = bounce_end_io_write_isa;  in __blk_queue_bounce()
250 			bio->bi_end_io = bounce_end_io_read_isa;  in __blk_queue_bounce()
253 	bio->bi_private = *bio_orig;  in __blk_queue_bounce()
254 	*bio_orig = bio;  in __blk_queue_bounce()
257 void blk_queue_bounce(struct request_queue *q, struct bio **bio_orig)  in blk_queue_bounce()