I did get zswap working without a backing store, using Bob's patches from http://thread.gmane.org/gmane.linux.kernel.mm/105627/focus=105642 applied to 3.11-rc6, The major issue we had with it was that i915 graphics buffers were getting corrupted somehow, which wasn't a problem with zram on the same kernel version. I'm sure with a little more investigation that problem could be fixed, though, and I don't think there were any other major problems with it in our (admittedly not very exhaustive) testing of those patches. Hope that helps, Steve Barber On Thu, Oct 31, 2013 at 5:27 PM, Luigi Semenzato <semenzato@xxxxxxxxxx> wrote: > [apologies for the previous HTML email] > > Hi Olav, > > I haven't personally done it. Seth outlines the configuration in this thread: > > http://thread.gmane.org/gmane.linux.kernel.mm/105378/focus=105543 > > Stephen, can you add more detail from your experience? > > Thanks! > > > On Thu, Oct 31, 2013 at 4:34 PM, Olav Haugan <ohaugan@xxxxxxxxxxxxxx> wrote: >> Hi Luigi, >> >> On 10/24/2013 6:12 PM, Luigi Semenzato wrote: >>> On Thu, Oct 24, 2013 at 5:35 PM, Olav Haugan <ohaugan@xxxxxxxxxxxxxx> wrote: >>>> Hi Bob, Luigi, >>>> >>>> On 10/23/2013 5:55 PM, Bob Liu wrote: >>>>> >>>>> On 10/24/2013 05:51 AM, Olav Haugan wrote: >>>> >>>>> By the way, could you take a try with zswap? Which can write pages to >>>>> real swap device if compressed pool is full. >>>> >>>> zswap might not be feasible in all cases if you only have flash as >>>> backing storage. >>> >>> Zswap can be configured to run without a backing storage. >>> >> >> I was under the impression that zswap requires a backing storage. Can >> you elaborate on how to configure zswap to not need a backing storage? >> >> >> Olav Haugan >> >> -- >> The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, >> hosted by The Linux Foundation -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>