On Tue, Mar 11, 2008 at 01:09:29AM -0700, Roland McGrath wrote: > > This really is the kernel filesystem's problem. It just doesn't make sense > to expect userland to implement half of your directory semantics for you. I agree that we are asking glibc to handle part of the union mount semantics in readdir. But we have tried handling directory listing of union entirely inside the kernel, but the results haven't been so good. (http://lkml.org/lkml/2007/12/5/147). Recently Al Viro suggested that we do this in the userland and he felt that is the only sane way of doing this. Infact I had mentioned about this approach to Ulrich briefly during FOSS.IN and he sounded positive to the idea of maintaining a dirent cache for duplicate elimination as long as it doesn't slowdown normal users. Regards, Bharata. -- 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