On Fri, Nov 2, 2012 at 4:41 PM, Zheng Liu <gnehzuil....@gmail.com> wrote: > 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. Great idea, temperature saving function is maybe very specific to FS. But i am wondering if we can find one generic way to save temperature info at first.
> > 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. heh, but other guys or products care about this. > > Regards, > Zheng -- Regards, Zhi Yong Wu -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
