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. Changes since V2: - really fix nr of NVMe ranges to 256 - free range on error Changes since V1: - hardcoded max ranges for NVMe to 255 - minor cleanups
Oops, reviewed v1 before noticing this one...
