Hi, On 20/05/15 14:10, Bob Liu wrote: > --- > drivers/block/xen-blkback/blkback.c | 12 ++++ > drivers/block/xen-blkback/common.h | 3 +- > drivers/block/xen-blkback/xenbus.c | 85 +++++++++++++++++++++------- > drivers/block/xen-blkfront.c | 110 > ++++++++++++++++++++++++++---------- > 4 files changed, 161 insertions(+), 49 deletions(-) > > diff --git a/drivers/block/xen-blkback/blkback.c > b/drivers/block/xen-blkback/blkback.c > index 713fc9f..057890f 100644 > --- a/drivers/block/xen-blkback/blkback.c > +++ b/drivers/block/xen-blkback/blkback.c > @@ -84,6 +84,12 @@ MODULE_PARM_DESC(max_persistent_grants, > "Maximum number of grants to map persistently"); > > /* > + * Maximum number of pages to be used as the ring between front and backend > + */ > +unsigned int xen_blkif_max_ring_order = XENBUS_MAX_RING_PAGE_ORDER;
We will soon support 64KB page granularity with ARM64, although the PV protocol will keep a 4KB page granularity. Can you clarify with granularity is used here? The one of the host or the one of the PV protocol? > +module_param_named(max_ring_page_order, xen_blkif_max_ring_order, int, > S_IRUGO); > +MODULE_PARM_DESC(max_ring_page_order, "Maximum order of pages to be used as > the ring"); > +/* > * The LRU mechanism to clean the lists of persistent grants needs to > * be executed periodically. The time interval between consecutive executions > * of the purge mechanism is set in ms. Regards, -- Julien Grall -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
