diff --git a/block/bio.c b/block/bio.c index 270f6b99926e..b9642a41f286 100644 --- a/block/bio.c +++ b/block/bio.c @@ -966,10 +966,13 @@ int bio_add_hw_page(struct request_queue *q, struct bio *bio, struct page *page, unsigned int len, unsigned int offset, unsigned int max_sectors, bool *same_page) { + unsigned int max_size = max_sectors << SECTOR_SHIFT; + if (WARN_ON_ONCE(bio_flagged(bio, BIO_CLONED))) return 0; - if (((bio->bi_iter.bi_size + len) >> SECTOR_SHIFT) > max_sectors) + len = min3(len, max_size, queue_max_segment_size(q)); + if (len > max_size - bio->bi_iter.bi_size) return 0; if (bio->bi_vcnt > 0) {