编译错误：
error: linux/config.h: No such file or directory
解决方案：
从linux-2.6.20起，config.h就已经被移除了.
将#include 修改成如下——>
#include
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18))
#include
#endif

编译错误：
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c: In function ‘scull_p_read’:
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:131: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:131: error: (Each undeclared identifier is reported only once
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:131: error: for each function it appears in.)
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:131: error: implicit declaration of function ‘signal_pending’
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:131: error: implicit declaration of function ‘schedule’
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c: In function ‘scull_getwritespace’:
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:168: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c: In function ‘scull_p_write’:
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:219: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:223: error: ‘SIGIO’ undeclared (first use in this function)
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:223: error: ‘POLL_IN’ undeclared (first use in this function)
make[2]: *** [/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.o] Error 1
make[1]: *** [_module_/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull] Error 2
解决方案：
头文件变动原因，在pipe.c中添加
#include