On Fri, Jun 23, 2017 at 05:40:06PM +0800, Yadan Fan wrote: > The smartpqi firmware will bypass the cache for any request larger > than 1MB, so we should cap the request size to avoid any > performance degradation in kernels later than v4.3 > > This degradation is caused from d2be537c3ba3568acd79cd178327b842e60d035e, > which changed max_sectors_kb to 1280k, but the hardware is able to > work fine with it, so the true fix should be from smartpqi driver. > > Signed-off-by: Yadan Fan <ydfan@xxxxxxxx> > --- Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx> -- Johannes Thumshirn Storage jthumshirn@xxxxxxx +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850
