I had an idea which I think would make inline directories more efficient, although it wouldn't be a backwards compatible change with the existing patch sets to date. We don't actually need to store the entry for '.', since we know what that should be, and we could just store the parent directory in a 4-byte entry. By not storing the full directory entries for "." and "..", we would save 20 bytes, which for a 256 byte inode where only 120 bytes or so are available for the inline directory, is pretty significant. (We can just synthesize them for the benefit of readdir and lookup --- and I'm pretty sure the VFS is doing its own synthesis for "." and possibly ".." already as far as lookup is concerned.) What do you think? - Ted -- 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
