Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

5 files changed, 80 insertions, 71 deletions

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 1e6edd568214..bf1c61cab8eb 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -656,7 +656,7 @@ static int loop_validate_file(struct file *file, struct block_device *bdev)
 			return -EBADF;
 
 		l = f->f_mapping->host->i_bdev->bd_disk->private_data;
-		if (l->lo_state == Lo_unbound) {
+		if (l->lo_state != Lo_bound) {
 			return -EINVAL;
 		}
 		f = l->lo_backing_file;
diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c
index 96670eefaeb2..377a694dc228 100644
--- a/drivers/block/paride/pcd.c
+++ b/drivers/block/paride/pcd.c
@@ -749,8 +749,12 @@ static int pcd_detect(void)
 		return 0;
 
 	printk("%s: No CD-ROM drive found\n", name);
-	for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++)
+	for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) {
+		blk_cleanup_queue(cd->disk->queue);
+		cd->disk->queue = NULL;
+		blk_mq_free_tag_set(&cd->tag_set);
 		put_disk(cd->disk);
+	}
 	pi_unregister_driver(par_drv);
 	return -1;
 }
diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c
index e92e7a8eeeb2..103b617cdc31 100644
--- a/drivers/block/paride/pf.c
+++ b/drivers/block/paride/pf.c
@@ -761,8 +761,12 @@ static int pf_detect(void)
 		return 0;
 
 	printk("%s: No ATAPI disk detected\n", name);
-	for (pf = units, unit = 0; unit < PF_UNITS; pf++, unit++)
+	for (pf = units, unit = 0; unit < PF_UNITS; pf++, unit++) {
+		blk_cleanup_queue(pf->disk->queue);
+		pf->disk->queue = NULL;
+		blk_mq_free_tag_set(&pf->tag_set);
 		put_disk(pf->disk);
+	}
 	pi_unregister_driver(par_drv);
 	return -1;
 }
@@ -1047,13 +1051,15 @@ static void __exit pf_exit(void)
 	int unit;
 	unregister_blkdev(major, name);
 	for (pf = units, unit = 0; unit < PF_UNITS; pf++, unit++) {
-		if (!pf->present)
-			continue;
-		del_gendisk(pf->disk);
+		if (pf->present)
+			del_gendisk(pf->disk);
+
 		blk_cleanup_queue(pf->disk->queue);
 		blk_mq_free_tag_set(&pf->tag_set);
 		put_disk(pf->disk);
-		pi_release(pf->pi);
+
+		if (pf->present)
+			pi_release(pf->pi);
 	}
 }
 
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 4ba967d65cf9..2210c1b9491b 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -833,7 +833,7 @@ static int parse_rbd_opts_token(char *c, void *private)
 		pctx->opts->queue_depth = intval;
 		break;
 	case Opt_alloc_size:
-		if (intval < 1) {
+		if (intval < SECTOR_SIZE) {
 			pr_err("alloc_size out of range\n");
 			return -EINVAL;
 		}
@@ -924,23 +924,6 @@ static void rbd_put_client(struct rbd_client *rbdc)
 		kref_put(&rbdc->kref, rbd_client_release);
 }
 
-static int wait_for_latest_osdmap(struct ceph_client *client)
-{
-	u64 newest_epoch;
-	int ret;
-
-	ret = ceph_monc_get_version(&client->monc, "osdmap", &newest_epoch);
-	if (ret)
-		return ret;
-
-	if (client->osdc.osdmap->epoch >= newest_epoch)
-		return 0;
-
-	ceph_osdc_maybe_request_map(&client->osdc);
-	return ceph_monc_wait_osdmap(&client->monc, newest_epoch,
-				     client->options->mount_timeout);
-}
-
 /*
  * Get a ceph client with specific addr and configuration, if one does
  * not exist create it.  Either way, ceph_opts is consumed by this
@@ -960,7 +943,8 @@ static struct rbd_client *rbd_get_client(struct ceph_options *ceph_opts)
 		 * Using an existing client.  Make sure ->pg_pools is up to
 		 * date before we look up the pool id in do_rbd_add().
 		 */
-		ret = wait_for_latest_osdmap(rbdc->client);
+		ret = ceph_wait_for_latest_osdmap(rbdc->client,
+					rbdc->client->options->mount_timeout);
 		if (ret) {
 			rbd_warn(NULL, "failed to get latest osdmap: %d", ret);
 			rbd_put_client(rbdc);
@@ -4203,12 +4187,12 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
 	q->limits.max_sectors = queue_max_hw_sectors(q);
 	blk_queue_max_segments(q, USHRT_MAX);
 	blk_queue_max_segment_size(q, UINT_MAX);
-	blk_queue_io_min(q, objset_bytes);
-	blk_queue_io_opt(q, objset_bytes);
+	blk_queue_io_min(q, rbd_dev->opts->alloc_size);
+	blk_queue_io_opt(q, rbd_dev->opts->alloc_size);
 
 	if (rbd_dev->opts->trim) {
 		blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
-		q->limits.discard_granularity = objset_bytes;
+		q->limits.discard_granularity = rbd_dev->opts->alloc_size;
 		blk_queue_max_discard_sectors(q, objset_bytes >> SECTOR_SHIFT);
 		blk_queue_max_write_zeroes_sectors(q, objset_bytes >> SECTOR_SHIFT);
 	}
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index a4bc74e72c39..24896ffb04ed 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -926,7 +926,7 @@ static int read_per_ring_refs(struct xen_blkif_ring *ring, const char *dir)
 	int err, i, j;
 	struct xen_blkif *blkif = ring->blkif;
 	struct xenbus_device *dev = blkif->be->dev;
-	unsigned int ring_page_order, nr_grefs, evtchn;
+	unsigned int nr_grefs, evtchn;
 
 	err = xenbus_scanf(XBT_NIL, dir, "event-channel", "%u",
 			  &evtchn);
@@ -936,43 +936,42 @@ static int read_per_ring_refs(struct xen_blkif_ring *ring, const char *dir)
 		return err;
 	}
 
-	err = xenbus_scanf(XBT_NIL, dev->otherend, "ring-page-order", "%u",
-			  &ring_page_order);
-	if (err != 1) {
-		err = xenbus_scanf(XBT_NIL, dir, "ring-ref", "%u", &ring_ref[0]);
+	nr_grefs = blkif->nr_ring_pages;
+
+	if (unlikely(!nr_grefs)) {
+		WARN_ON(true);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < nr_grefs; i++) {
+		char ring_ref_name[RINGREF_NAME_LEN];
+
+		snprintf(ring_ref_name, RINGREF_NAME_LEN, "ring-ref%u", i);
+		err = xenbus_scanf(XBT_NIL, dir, ring_ref_name,
+				   "%u", &ring_ref[i]);
+
 		if (err != 1) {
+			if (nr_grefs == 1)
+				break;
+
 			err = -EINVAL;
-			xenbus_dev_fatal(dev, err, "reading %s/ring-ref", dir);
+			xenbus_dev_fatal(dev, err, "reading %s/%s",
+					 dir, ring_ref_name);
 			return err;
 		}
-		nr_grefs = 1;
-	} else {
-		unsigned int i;
+	}
 
-		if (ring_page_order > xen_blkif_max_ring_order) {
+	if (err != 1) {
+		WARN_ON(nr_grefs != 1);
+
+		err = xenbus_scanf(XBT_NIL, dir, "ring-ref", "%u",
+				   &ring_ref[0]);
+		if (err != 1) {
 			err = -EINVAL;
-			xenbus_dev_fatal(dev, err, "%s/request %d ring page order exceed max:%d",
-					 dir, ring_page_order,
-					 xen_blkif_max_ring_order);
+			xenbus_dev_fatal(dev, err, "reading %s/ring-ref", dir);
 			return err;
 		}
-
-		nr_grefs = 1 << ring_page_order;
-		for (i = 0; i < nr_grefs; i++) {
-			char ring_ref_name[RINGREF_NAME_LEN];
-
-			snprintf(ring_ref_name, RINGREF_NAME_LEN, "ring-ref%u", i);
-			err = xenbus_scanf(XBT_NIL, dir, ring_ref_name,
-					   "%u", &ring_ref[i]);
-			if (err != 1) {
-				err = -EINVAL;
-				xenbus_dev_fatal(dev, err, "reading %s/%s",
-						 dir, ring_ref_name);
-				return err;
-			}
-		}
 	}
-	blkif->nr_ring_pages = nr_grefs;
 
 	for (i = 0; i < nr_grefs * XEN_BLKIF_REQS_PER_PAGE; i++) {
 		req = kzalloc(sizeof(*req), GFP_KERNEL);
@@ -1023,6 +1022,7 @@ fail:
 static int connect_ring(struct backend_info *be)
 {
 	struct xenbus_device *dev = be->dev;
+	struct xen_blkif *blkif = be->blkif;
 	unsigned int pers_grants;
 	char protocol[64] = "";
 	int err, i;
@@ -1030,28 +1030,29 @@ static int connect_ring(struct backend_info *be)
 	size_t xspathsize;
 	const size_t xenstore_path_ext_size = 11; /* sufficient for "/queue-NNN" */
 	unsigned int requested_num_queues = 0;
+	unsigned int ring_page_order;
 
 	pr_debug("%s %s\n", __func__, dev->otherend);
 
-	be->blkif->blk_protocol = BLKIF_PROTOCOL_DEFAULT;
+	blkif->blk_protocol = BLKIF_PROTOCOL_DEFAULT;
 	err = xenbus_scanf(XBT_NIL, dev->otherend, "protocol",
 			   "%63s", protocol);
 	if (err <= 0)
 		strcpy(protocol, "unspecified, assuming default");
 	else if (0 == strcmp(protocol, XEN_IO_PROTO_ABI_NATIVE))
-		be->blkif->blk_protocol = BLKIF_PROTOCOL_NATIVE;
+		blkif->blk_protocol = BLKIF_PROTOCOL_NATIVE;
 	else if (0 == strcmp(protocol, XEN_IO_PROTO_ABI_X86_32))
-		be->blkif->blk_protocol = BLKIF_PROTOCOL_X86_32;
+		blkif->blk_protocol = BLKIF_PROTOCOL_X86_32;
 	else if (0 == strcmp(protocol, XEN_IO_PROTO_ABI_X86_64))
-		be->blkif->blk_protocol = BLKIF_PROTOCOL_X86_64;
+		blkif->blk_protocol = BLKIF_PROTOCOL_X86_64;
 	else {
 		xenbus_dev_fatal(dev, err, "unknown fe protocol %s", protocol);
 		return -ENOSYS;
 	}
 	pers_grants = xenbus_read_unsigned(dev->otherend, "feature-persistent",
 					   0);
-	be->blkif->vbd.feature_gnt_persistent = pers_grants;
-	be->blkif->vbd.overflow_max_grants = 0;
+	blkif->vbd.feature_gnt_persistent = pers_grants;
+	blkif->vbd.overflow_max_grants = 0;
 
 	/*
 	 * Read the number of hardware queues from frontend.
@@ -1067,16 +1068,30 @@ static int connect_ring(struct backend_info *be)
 				requested_num_queues, xenblk_max_queues);
 		return -ENOSYS;
 	}
-	be->blkif->nr_rings = requested_num_queues;
-	if (xen_blkif_alloc_rings(be->blkif))
+	blkif->nr_rings = requested_num_queues;
+	if (xen_blkif_alloc_rings(blkif))
 		return -ENOMEM;
 
 	pr_info("%s: using %d queues, protocol %d (%s) %s\n", dev->nodename,
-		 be->blkif->nr_rings, be->blkif->blk_protocol, protocol,
+		 blkif->nr_rings, blkif->blk_protocol, protocol,
 		 pers_grants ? "persistent grants" : "");
 
-	if (be->blkif->nr_rings == 1)
-		return read_per_ring_refs(&be->blkif->rings[0], dev->otherend);
+	ring_page_order = xenbus_read_unsigned(dev->otherend,
+					       "ring-page-order", 0);
+
+	if (ring_page_order > xen_blkif_max_ring_order) {
+		err = -EINVAL;
+		xenbus_dev_fatal(dev, err,
+				 "requested ring page order %d exceed max:%d",
+				 ring_page_order,
+				 xen_blkif_max_ring_order);
+		return err;
+	}
+
+	blkif->nr_ring_pages = 1 << ring_page_order;
+
+	if (blkif->nr_rings == 1)
+		return read_per_ring_refs(&blkif->rings[0], dev->otherend);
 	else {
 		xspathsize = strlen(dev->otherend) + xenstore_path_ext_size;
 		xspath = kmalloc(xspathsize, GFP_KERNEL);
@@ -1085,10 +1100,10 @@ static int connect_ring(struct backend_info *be)
 			return -ENOMEM;
 		}
 
-		for (i = 0; i < be->blkif->nr_rings; i++) {
+		for (i = 0; i < blkif->nr_rings; i++) {
 			memset(xspath, 0, xspathsize);
 			snprintf(xspath, xspathsize, "%s/queue-%u", dev->otherend, i);
-			err = read_per_ring_refs(&be->blkif->rings[i], xspath);
+			err = read_per_ring_refs(&blkif->rings[i], xspath);
 			if (err) {
 				kfree(xspath);
 				return err;