I'm only seeing patch 2 of 4 - please resend the whole series so that it can properly be reviewed.
- [PATCH v2 0/4] skip swapcache for super fast device Minchan Kim
- [PATCH v2 2/4] bdi: introduce BDI_CAP_SYNCHRONOUS_I... Minchan Kim
- Re: [PATCH v2 2/4] bdi: introduce BDI_CAP_SYNCH... Christoph Hellwig
- Re: [PATCH v2 2/4] bdi: introduce BDI_CAP_S... Minchan Kim
- [PATCH v2 4/4] mm:swap: skip swapcache for swapin o... Minchan Kim
- [PATCH v2 1/4] zram: set BDI_CAP_STABLE_WRITES once Minchan Kim
- [PATCH v2 3/4] mm:swap: introduce SWP_SYNCHRONOUS_I... Minchan Kim
- [PATCH v2 0/4] skip swapcache for super fast device Minchan Kim
- [PATCH v2 3/4] mm:swap: introduce SWP_SYNCHRONO... Minchan Kim
- [PATCH v2 2/4] bdi: introduce BDI_CAP_SYNCHRONO... Minchan Kim
- [PATCH v2 1/4] zram: set BDI_CAP_STABLE_WRITES ... Minchan Kim
- [PATCH v2 4/4] mm:swap: skip swapcache for swap... Minchan Kim
