花了一天的时间,终于把ubuntu12.04 的linux内核版本从3.13.0升级到3.4.0 升级后,系统更加稳定.具体步骤:# wget http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.4.tar.gz# tar zxvf linux-3.4.tar.gz -C /usr/src# cd /usr/src/linux-3.4# make menuconfig# make# make modules_install# cp arch/x
1.struct page /* Each physical page in the system has a struct page associated with * it to keep track of whatever it is we are using the page for at the * moment. Note that we have no way to track which tasks are using * a page, though if it is a pa