33 static int copy_bio_to_actor(struct bio *bio,  in copy_bio_to_actor()  argument
46 	if (WARN_ON_ONCE(!bio_next_segment(bio, &iter_all)))  in copy_bio_to_actor()
70 			if (!bio_next_segment(bio, &iter_all))  in copy_bio_to_actor()
79 static int squashfs_bio_read_cached(struct bio *fullbio,  in squashfs_bio_read_cached()
87 	struct bio *bio = NULL;  in squashfs_bio_read_cached()  local
114 		if (!bio || idx != end_idx) {  in squashfs_bio_read_cached()
115 			struct bio *new = bio_alloc_clone(bdev, fullbio,  in squashfs_bio_read_cached()
118 			if (bio) {  in squashfs_bio_read_cached()
119 				bio_trim(bio, start_idx * PAGE_SECTORS,  in squashfs_bio_read_cached()
121 				bio_chain(bio, new);  in squashfs_bio_read_cached()
122 				submit_bio(bio);  in squashfs_bio_read_cached()
125 			bio = new;  in squashfs_bio_read_cached()
133 	if (bio) {  in squashfs_bio_read_cached()
134 		bio_trim(bio, start_idx * PAGE_SECTORS,  in squashfs_bio_read_cached()
136 		err = submit_bio_wait(bio);  in squashfs_bio_read_cached()
137 		bio_put(bio);  in squashfs_bio_read_cached()
190 			     struct bio **biop, int *block_offset)  in squashfs_bio_read()
202 	struct bio *bio;  in squashfs_bio_read()  local
204 	bio = bio_kmalloc(page_count, GFP_NOIO);  in squashfs_bio_read()
205 	if (!bio)  in squashfs_bio_read()
207 	bio_init(bio, sb->s_bdev, bio->bi_inline_vecs, page_count, REQ_OP_READ);  in squashfs_bio_read()
208 	bio->bi_iter.bi_sector = block * (msblk->devblksize >> SECTOR_SHIFT);  in squashfs_bio_read()
229 		__bio_add_page(bio, page, len, offset);  in squashfs_bio_read()
235 		error = squashfs_bio_read_cached(bio, cache_mapping, index,  in squashfs_bio_read()
239 		error = submit_bio_wait(bio);  in squashfs_bio_read()
243 	*biop = bio;  in squashfs_bio_read()
248 	bio_free_pages(bio);  in squashfs_bio_read()
249 	bio_uninit(bio);  in squashfs_bio_read()
250 	kfree(bio);  in squashfs_bio_read()
267 	struct bio *bio = NULL;  in squashfs_read_data()  local
292 		res = squashfs_bio_read(sb, index, 2, &bio, &offset);  in squashfs_read_data()
296 		if (WARN_ON_ONCE(!bio_next_segment(bio, &iter_all))) {  in squashfs_read_data()
306 			if (WARN_ON_ONCE(!bio_next_segment(bio, &iter_all))) {  in squashfs_read_data()
313 		bio_free_pages(bio);  in squashfs_read_data()
314 		bio_uninit(bio);  in squashfs_read_data()
315 		kfree(bio);  in squashfs_read_data()
333 	res = squashfs_bio_read(sb, index, length, &bio, &offset);  in squashfs_read_data()
342 		res = msblk->thread_ops->decompress(msblk, bio, offset, length, output);  in squashfs_read_data()
344 		res = copy_bio_to_actor(bio, output, offset, length);  in squashfs_read_data()
348 	bio_free_pages(bio);  in squashfs_read_data()
349 	bio_uninit(bio);  in squashfs_read_data()
350 	kfree(bio);  in squashfs_read_data()