Am Dienstag, 4. Dezember 2007 schrieb Nick Piggin: [...] > There is one slight downside -- direct block device access and filesystem > metadata access goes through an extra copy and gets stored in RAM twice. > However, this downside is only slight, because the real buffercache of the > device is now reclaimable (because we're not playing crazy games with it), > so under memory intensive situations, footprint should effectively be the > same -- maybe even a slight advantage to the new driver because it can also > reclaim buffer heads.
This is just an idea, I dont know if it is worth the trouble, but have you though about implementing direct_access for brd? That would allow execute-in-place (xip) on brd eliminating the extra copy. Christian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
