Hello, Hannes. On Thu, Apr 14, 2016 at 07:44:19AM +0200, Hannes Reinecke wrote: > Hehe. No, it isn't, if you look closely. > (Or make that: it _shouldn't_, and I've messed it up) > (That's what the 'fpdma' parameter is for) > > The benefit is not so much for normal operations, but it'll give us > a performance improvements on SMR drives where we need to issue > READ LOG DMA EXT rather frequently. There we really want to have > them as NCQ commands.
I'm still a bit confused. Isn't it part of EH? If so, the path is never traveled with other commands in flight and thus whether a command is NCQ or not doesn't make any difference. The only thing it'd do is making devices which advertise the capability but don't get it quite right fail. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
