Hi Ilya, I think your patch fully completes our purpose and I confirmed that the kernel with the patch could work well by testing in my environment.
I added the notrim option to rbd map command in accordance with your kernel rbd driver patch, and I pushed the patch to GitHub (https://github.com/hitoshikamei/ceph/tree/rbdmap-notrim). So, could you please merge your patch to the kernel? If your patch is merged, then my patch can work, so I will send the Pull Request. Regards, -- Hitoshi Kamei
