On Mon, Aug 24, 2015 at 10:13:25AM +0300, Artem Bityutskiy wrote: > 1. we are the only FS erroring out on O_DIRECT > 2. other file-systems not supporting direct IO just fake it There are lots of file systems not supporting O_DIRECT, but ubifs might be the most common one. Given that O_DIRECT implementations aren't hard, so what's holding back a real implementation? -- 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