diff --git a/block/bio.c b/block/bio.c index ee991370d2896a56fada36d106b09b999a39333d..cfa0ee3348704581a832f9cdb6a7b4bc7454a3d4 100644 --- a/block/bio.c +++ b/block/bio.c @@ -880,6 +880,7 @@ static int __bio_clone(struct bio *bio, struct bio *bio_src, gfp_t gfp) bio->bi_ioprio = bio_src->bi_ioprio; bio->bi_write_hint = bio_src->bi_write_hint; bio->bi_write_stream = bio_src->bi_write_stream; + bio->bi_bvec_gap_bit = bio_src->bi_bvec_gap_bit; bio->bi_iter = bio_src->bi_iter; if (bio->bi_bdev) { @@ -1849,6 +1850,14 @@ struct bio *bio_split(struct bio *bio, int sectors, bio_advance(bio, split->bi_iter.bi_size); + /* + * The gap bit is set when splitting to limits and only applies to the + * front bio that was split off. The remaining bio will calcualte its + * gap value when it is subsequently split to limits, so it is safe to + * re-initialize the value back to 0. + */ + bio->bi_bvec_gap_bit = 0; + if (bio_flagged(bio, BIO_TRACE_COMPLETION)) bio_set_flag(split, BIO_TRACE_COMPLETION);