On Wed, Nov 15, 2017 at 04:10:28PM -0700, Liu Bo wrote: > Setting plug can merge adjacent IOs before dispatching IOs to the disk > driver. > > Without plug, it'd not be a problem for single disk usecases, but for > multiple disks using raid profile, a large IO can be split to several > IOs of stripe length, and plug can be helpful to bring them together > for each disk so that we can save several disk access. > > Moreover, fsync issues synchronous writes, so plug can really take > effect. > > Signed-off-by: Liu Bo <bo.li.liu@xxxxxxxxxx> Reviewed-by: David Sterba <dsterba@xxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
