delphij's Chaos

From the commit log:

Close an interrupt race between vm_page_lookup() and (typically) a vm_page_sleep_busy() check by using the correct spl protection. An interrupt can occur inbetween the two operations and unbusy/free the page in question, causing the busy check to fail and for the code to fall through and then operate on a page that may have been freed and possibly even reused. Also note that vm_page_grab() had the same issue between the lookup, busy check, and vm_page_busy() call.

来自车东的Blog上的这篇。

不知道是谁人的发明，用「猴年马月」来泛指不知道哪年哪月，或者泛指遥遥无期。其实猴年马月的周期性虽然未必都很整齐，但基本上是有规律的。猴年是12年一个轮回，马月也是12个月一个论回，所以凡是猴年，必有一个月是马月，比如与2004年大体相应的猴年(甲申年)，其马月(庚午月)就是农历5月份，就是从公历2004年6月18日开始到7月16日结束，由于这一猴年的农历5月份是小月，只有29天，所以今年的马月比较短。

发现VC上面偶尔会用到的const_cast在gcc (c++)里面竟然不能用，郁闷，遂采用C-style cast，但我希望修正这个问题。

有个学生爬墙出校，被校长抓到。
校长问他为什么不从校门走，他说：美特斯邦威，不走寻常路。
校长又问他这么高的墙怎么翻过去啊？他指了指裤子说：李宁，一切皆有可能。
校长又问他翻墙是什么感觉？他指了指鞋子说：特步，飞一般的感觉。

绕过liu8han的maintainership commit了无数次之后，终于让GD可以make了，哈哈哈哈~~~

从今天起谁导致无法make就请客！

以前觉得Ruslan Ermilov (ru at FreeBSD dot org, mdoc(7) maintainer)一般只是commit一些Makefile，在整个project里面不过是一个做简单maintain工作的角色，真到自己动手写Makefile的时候才发现，想把Makefile写好可真是太难了。

For those who concerned about my absence here last night: I’m still alive, just tired and got to sleep early. Don’t worry about me, I am healthy and is having a good emotion :-)

I am thinking of the possiblity of backporting / porting several DragonFly and NetBSD, even OpenBSD’s features, to FreeBSD, to increase its performance, stablity, and the code readablity.

From Diary 20040511

我最讨厌的两种人：在朋友面前口是心非的人，内鬼。后者大抵可以归于前者，因为内鬼必然是一些在朋友面前口是心非的人。基本上我可以原谅一个人对我所做的任何事情，但唯独不包括背叛。

内鬼，内鬼，我恨内鬼！

By Google’ing the web I got a 1.1.5.1-RELEASE tarball. FreeBSD 1.x was based on Net/2 and the USL lawsuit has caused FreeBSD project to re-start from 4.4BSD-Lite2, and 1.1.5.1 was the last 1.x RELEASE permitted to be released.