On Sun, Aug 09, 2015 at 10:50:41PM -0400, Ming Lei wrote: > Christoph, could you share your idea again about this approch? > > If you still don't think it is good to switch between buffered I/O > and direct I/O, I will not do that in next post.
If we epxose a 512 byte block size to the loop device people will use it, for example mkfs.xfs might do smaller I/O, extN will default to small blocksize for small devices, etc. If you are using a loop devices on a 4k sector backing device and care about performance (which current loop users generally don't..) just make sure to set the loop block size to 4k, which Hannes' series will allow us to do easily. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
