On Fri, Nov 02, 2012 at 02:38:29PM +0800, Zhi Yong Wu wrote: > Here also has another question. > > How to save the file temperature among the umount to be able to > preserve the file tempreture after reboot? > > This above is the requirement from DB product. > I thought that we can save file temperature in its inode struct, that > is, add one new field in struct inode, then this info will be written > to disk with inode. > > Any comments or ideas are appreciated, thanks. Hi Zhiyong, I think that we might define a callback function. If a filesystem wants to save these data, it can implement a function to save them. The filesystem can decide whether adding it or not by themselves. BTW, actually I don't really care about how to save these data because I only want to observe which file is accessed in real time, which is very useful for me to track a problem in our product system. Regards, Zheng -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
