On Fri, Mar 01, 2013 at 10:42:25AM -0600, Eric Sandeen wrote: > Use a percpu counter rather than atomic types for shrinker accounting. > There's no need for ultimate accuracy in the shrinker, so this > should come a little more cheaply. The percpu struct is somewhat > large, but there was a big gap before the cache-aligned > s_es_lru_lock anyway, and it fits nicely in there. I thought about using percpu counters, but I was worried about the size on really big machines. OTOH, it will be the really large NUMA machines where atomic_t will really hurt, so maybe we should use percpu countesr and not really worry about it. It's on a per file system basis, so even if it is a few hundred bytes it shouldn't break the bank. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
