Signed-off-by: Ming Lei <tom.leiming@xxxxxxxxx> --- drivers/block/loop.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index fa1b7a90ba11..55ce4226590d 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -485,6 +485,11 @@ static int lo_rw_aio(struct loop_device *lo, struct loop_cmd *cmd, /* nomerge for loop request queue */ WARN_ON(cmd->rq->bio != cmd->rq->biotail); + /* + * For multipage bvec support, it is safe to pass the bvec + * table to iov iterator, because iov iter still uses bvec + * iter helpers to travese bvec. + */ bvec = __bvec_iter_bvec(bio->bi_io_vec, bio->bi_iter); iov_iter_bvec(&iter, ITER_BVEC | rw, bvec, bio_segments(bio), blk_rq_bytes(cmd->rq)); -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
