On Thu, Sep 20, 2012 at 05:47:11PM -0700, Tejun Heo wrote: > On Mon, Sep 10, 2012 at 05:22:33PM -0700, Kent Overstreet wrote: > > + bio_for_each_segment_all(bv, bio, i) { > > + bv->bv_page = alloc_page(gfp_mask); > > + if (!bv->bv_page) { > > + while (bv-- != bio->bi_io_vec) > > + __free_page(bv->bv_page); > > I don't know. I feel stupid. I think it's because the loop variable > changes between loop condition test and actual body of loop. How > about the following? It is pointing to the member of the same array > so I think it's not even violating pointer comparison rules. > > while (--bv >= bio->bi_io_vec) > __free_page(bv->bv_page); I can't remember why I did it that way, but I think I like yours better - I'll change it. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel