Dmitry Monakhov <dmonakhov@xxxxxxxxxx> writes: > Can someone please describe me why directio deny partial writes. > For example if someone try to write 100Mb but file system has less > data it return ENOSPC in the middle of block allocation. > All allocated blocks will be truncated (it may be 100Mb -4k) end > ENOSPC will be returned. As far as i remember direct_io always act > like this, but i never asked why? > Why do we have to give up all the progress we made? > In fact partial writes are possible in case of holes, when we > fall back to buffered write. XFS implemented partial writes. > > I've done trivial changes and it works like charm. > Let's enable partial writes support and allow caller to define > this behavior. add Andrew to cc: -- 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
