On Sat, Apr 23, 2016 at 06:08:37PM +0000, Verma, Vishal L wrote: > direct_IO might fail with -EINVAL due to misalignment, or -ENOMEM due > to some allocation failing, and I thought we should return the original > -EIO in such cases so that the application doesn't lose the information > that the bad block is actually causing the error. EINVAL is a concern here. Not due to the right error reported, but because it means your current scheme is fundamentally broken - we need to support I/O at any alignment for DAX I/O, and not fail due to alignbment concernes for a highly specific degraded case. I think this whole series need to go back to the drawing board as I don't think it can actually rely on using direct I/O as the EIO fallback. -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
