On Tue, Jul 18, 2023 at 02:58:34PM +0200, Ard Biesheuvel wrote: ... > @@ -1618,9 +1614,7 @@ static int zram_recompress(struct zram *zram, u32 index, struct page *page, > > num_recomps++; > zstrm = zcomp_stream_get(zram->comps[prio]); > - src = kmap_atomic(page); > - ret = zcomp_compress(zstrm, src, &comp_len_new); > - kunmap_atomic(src); > + ret = zcomp_compress(zstrm, page, &comp_len_new); Hi Ard, src appears to be unused in this function with this change. > > if (ret) { > zcomp_stream_put(zram->comps[prio]); ...