Quoting Liu Bo (2013-05-16 10:31:39) > On Thu, May 16, 2013 at 07:54:17AM -0400, Chris Mason wrote: > > Quoting Miao Xie (2013-05-16 03:22:37) > > > > I must say that the patch itself looks harmless, the reason is not good > > > > enough. > > > > > > I don't agree with you. > > > It is perishing that The memory reclaim task is blocked for a long time. > > > We should avoid > > > this problem. > > > > synchronize_rcu and friends can take a very very long time. I like this > > patch as a way to avoid them, it's just keeps the whole kernel moving. > > > > -chris > > Okay, that teaches me another lesson, thanks Miao :)
Actually using the rcu api isn't a huge impact. It's just the synchronize_rcu variants that should be avoided ;) -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
