On 02/08/2017 06:46 AM, Christoph Hellwig wrote: > Hi all, > > this series adds support for merging discontiguous discard bios into a > single request if the driver supports it. This reduces the number of > discards sent to the device by about a factor of 5-6 for typical > workloads on NVMe, and for slower devices that use I/O scheduling > the number will probably be even bigger but I've not implemented > that support yet. This looks good to me. It's running testing now, but provided that the tests are successful, we should get this queued up for 4.11. -- Jens Axboe