On Thu, Aug 13, 2015 at 11:19:54AM +0800, Herbert Xu wrote: > On Thu, Aug 13, 2015 at 11:24:13AM +0900, Joonsoo Kim wrote: > > Until now, zram uses compression algorithm through direct call > > to core algorithm function, but, it has drawback that we need to add > > compression algorithm manually to zram. If we don't do that, we cannot > > utilize various compression algorithms in the system. To improve this > > situation, zram will be changed to use crypto subsystem in following > > patch. There is one problem with this change. Zram has a interface > > that what compression algorithm it can support. Although crypto subsystem > > has /proc interface to search all of crypto algorithm, but, there is > > no way to get just compression algorithm in cryto subsystem. To implement > > it on zram-side, crypto_alg_list and rwsem should be exported so > > this patch do it. > > > > Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> > > Nack. We already have a netlink interface that can be used to > query algorithms and the type information is present in the report. > The interface is crypto_user and should be used instead of exporting > the raw list. Oh... I see. Is there any way to access netlink interface and get the output from kernel-side? I'd like to show information through "/sys/block/zramX/comp_algorithm", because some user program can be broken if we change output of userspace exposed interface. Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
