I've been beating on this patch kit for the last few weeks with a bunch of different devices. I have also tested extensively with Shaohua Li's MD RAID0 discard support. The only functional change is support for discard and write same bio/request merging. Other than that there were a few tweaks for later kernels by both Mike and me. I put a writesame5 branch on: git://git.kernel.org/pub/scm/linux/kernel/git/mkp/linux.git It's against block/for-3.7/core. [PATCH 1/8] block: Clean up special command handling logic [PATCH 2/8] block: Consolidate command flag and queue limit checks [PATCH 3/8] block: Implement support for WRITE SAME [PATCH 4/8] block: Make blkdev_issue_zeroout use WRITE SAME [PATCH 5/8] block: ioctl to zero block ranges [PATCH 6/8] scsi: Add a report opcode helper [PATCH 7/8] sd: Permit merged discard requests [PATCH 8/8] sd: Implement support for WRITE SAME -- Martin K. Petersen Oracle Linux Engineering -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html