On Tue, Mar 12, 2013 at 03:41:31PM +0800, zhuyj wrote: > If I use kernel>=3.0, this will not occur. Sounds like this is a problem in 2.6.39 that has since been fixed in newer kernels. > So is this is a bug? Sure looks like it's a bug. :-) There are so many distributions and other old embedded systems, etc., using older kernels that there's just no way that upstream developers can try to debug every single older kernel --- and 2.6.39 isn't even a kernel that is being supported by a volunteer as a long-term supported kernel. See http://www.kernel.org for a list of kernels which are supported as long-term kernels, and even then, please remember that unless fixes are automatically backported, or someone manually backports a fix that doesn't automatically apply to an older kernel, it's not going to happen..... Regards, - Ted P.S. Your problem appears to be completely unrelated to the thread which you replied to. This makes it hard for us to keep track of questions/bug reports which users submit. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html