On Wed, Apr 02, 2014 at 03:41:15AM -0700, Christoph Hellwig wrote: > On Thu, Mar 27, 2014 at 04:40:31PM -0400, Matthew Wilcox wrote: > > Removing the host_lock from the I/O submission path gives a huge > > scalability improvement. > > This looks reasonable to me, but did you do a full audit that all state > is properly synchronized in the functions called from _scsih_qcmd_lck? > > If so that should be stated in the patch description.
I did one for mpt2sas back in July 2011 when I first submitted this patch. http://marc.info/?l=linux-scsi&m=130980763617589&w=2 I must confess to having not done so for this iteration. The equivalent to this patch has been in RHEL since 6.2, so I hope that gives us some amount of confidence. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
