On Fri, Jan 27, 2012 at 12:15:51PM -0800, Andrew Morton wrote: > > The accounting code will be compiled in by default > > (CONFIG_READAHEAD_STATS=y), and will remain inactive by default. > > I agree with those choices. They effectively mean that the stats will > be a developer-only/debugger-only thing. So even if the atomic_inc() > costs are measurable during these develop/debug sessions, is anyone > likely to care? Sorry I have changed the default to CONFIG_READAHEAD_STATS=n to avoid bloating the kernel (and forgot to edit the changelog accordingly). I'm not sure how many people are going to check the readahead stats. Thanks, Fengguang -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html