On Thu, 2013-07-25 at 12:16 +0200, Alexander Gordeev wrote: > On Mon, Jul 22, 2013 at 02:10:36PM -0700, Nicholas A. Bellinger wrote: > > Np. FYI, you'll want to use the latest commit e7827b351 HEAD from > > target-pending/scsi-mq, which now has functioning scsi-generic support. > > Survives a boot, a kernel build and the build's result :) Great. Thanks for the feedback Alexander! So the next step on my end is to enable -mq for ahci, and verify initial correctness using QEMU/KVM hardware emulation. Btw, I've been looking at enabling the SHT->cmd_size for struct ata_queued_cmd descriptor pre-allocation, but AFAICT these descriptors are already all pre-allocated by libata and obtained via ata_qc_new() -> __ata_qc_from_tag() during ata_scsi_queuecmd(). So that said, with the struct request + struct scsi_cmnd pre-allocations already provided by blk-mq -> scsi-mq code, all memory allocations should have already been eliminated from I/O fast path. --nab -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
