xen-blkback: Inline some of the functions that were moved from vbd/interface.c

Shuffling code around.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

drivers/block/xen-blkback/blkback.c

@@ -170,75 +170,9 @@ static void free_req(struct pending_req *req)
  * Routines for managing virtual block devices (vbds).
  */
 
-#define vbd_sz(_v)	((_v)->bdev->bd_part ? \
-			 (_v)->bdev->bd_part->nr_sects : \
-			  get_capacity((_v)->bdev->bd_disk))
 
-unsigned long long vbd_size(struct vbd *vbd)
-{
-	return vbd_sz(vbd);
-}
-
-unsigned int vbd_info(struct vbd *vbd)
-{
-	return vbd->type | (vbd->readonly ? VDISK_READONLY : 0);
-}
-
-unsigned long vbd_secsize(struct vbd *vbd)
-{
-	return bdev_logical_block_size(vbd->bdev);
-}
-
-int vbd_create(struct blkif_st *blkif, blkif_vdev_t handle, unsigned major,
-	       unsigned minor, int readonly, int cdrom)
-{
-	struct vbd *vbd;
-	struct block_device *bdev;
-
-	vbd = &blkif->vbd;
-	vbd->handle   = handle;
-	vbd->readonly = readonly;
-	vbd->type     = 0;
-
-	vbd->pdevice  = MKDEV(major, minor);
-
-	bdev = blkdev_get_by_dev(vbd->pdevice, vbd->readonly ?
-				 FMODE_READ : FMODE_WRITE, NULL);
-
-	if (IS_ERR(bdev)) {
-		DPRINTK("vbd_creat: device %08x could not be opened.\n",
-			vbd->pdevice);
-		return -ENOENT;
-	}
-
-	vbd->bdev = bdev;
-	vbd->size = vbd_size(vbd);
-
-	if (vbd->bdev->bd_disk == NULL) {
-		DPRINTK("vbd_creat: device %08x doesn't exist.\n",
-			vbd->pdevice);
-		vbd_free(vbd);
-		return -ENOENT;
-	}
-
-	if (vbd->bdev->bd_disk->flags & GENHD_FL_CD || cdrom)
-		vbd->type |= VDISK_CDROM;
-	if (vbd->bdev->bd_disk->flags & GENHD_FL_REMOVABLE)
-		vbd->type |= VDISK_REMOVABLE;
-
-	DPRINTK("Successful creation of handle=%04x (dom=%u)\n",
-		handle, blkif->domid);
-	return 0;
-}
-
-void vbd_free(struct vbd *vbd)
-{
-	if (vbd->bdev)
-		blkdev_put(vbd->bdev, vbd->readonly ? FMODE_READ : FMODE_WRITE);
-	vbd->bdev = NULL;
-}
-
-int vbd_translate(struct phys_req *req, struct blkif_st *blkif, int operation)
+static int vbd_translate(struct phys_req *req, struct blkif_st *blkif,
+			 int operation)
 {
 	struct vbd *vbd = &blkif->vbd;
 	int rc = -EACCES;
@@ -257,13 +191,13 @@ int vbd_translate(struct phys_req *req, struct blkif_st *blkif, int operation)
 	return rc;
 }
 
-void vbd_resize(struct blkif_st *blkif)
+static void vbd_resize(struct blkif_st *blkif)
 {
 	struct vbd *vbd = &blkif->vbd;
 	struct xenbus_transaction xbt;
 	int err;
 	struct xenbus_device *dev = blkback_xenbus(blkif->be);
-	unsigned long long new_size = vbd_size(vbd);
+	unsigned long long new_size = vbd_sz(vbd);
 
 	printk(KERN_INFO "VBD Resize: Domid: %d, Device: (%d, %d)\n",
 		blkif->domid, MAJOR(vbd->pdevice), MINOR(vbd->pdevice));
@@ -276,7 +210,7 @@ void vbd_resize(struct blkif_st *blkif)
 		return;
 	}
 	err = xenbus_printf(xbt, dev->nodename, "sectors", "%llu",
-			    vbd_size(vbd));
+			    (unsigned long long)vbd_sz(vbd));
 	if (err) {
 		printk(KERN_WARNING "Error writing new size");
 		goto abort;
@@ -344,7 +278,7 @@ int blkif_schedule(void *arg)
 	while (!kthread_should_stop()) {
 		if (try_to_freeze())
 			continue;
-		if (unlikely(vbd->size != vbd_size(vbd)))
+		if (unlikely(vbd->size != vbd_sz(vbd)))
 			vbd_resize(blkif);
 
 		wait_event_interruptible(

drivers/block/xen-blkback/common.h

@@ -95,12 +95,10 @@ struct blkif_st {
 	grant_ref_t    shmem_ref;
 };
 
-struct blkif_st *blkif_alloc(domid_t domid);
-void blkif_disconnect(struct blkif_st *blkif);
-void blkif_free(struct blkif_st *blkif);
-int blkif_map(struct blkif_st *blkif, unsigned long shared_page,
-	      unsigned int evtchn);
-void vbd_resize(struct blkif_st *blkif);
+
+#define vbd_sz(_v)	((_v)->bdev->bd_part ? \
+			 (_v)->bdev->bd_part->nr_sects : \
+			  get_capacity((_v)->bdev->bd_disk))
 
 #define blkif_get(_b) (atomic_inc(&(_b)->refcnt))
 #define blkif_put(_b)					\
@@ -109,24 +107,12 @@ void vbd_resize(struct blkif_st *blkif);
 			wake_up(&(_b)->waiting_to_free);\
 	} while (0)
 
-/* Create a vbd. */
-int vbd_create(struct blkif_st *blkif, blkif_vdev_t vdevice, unsigned major,
-	       unsigned minor, int readonly, int cdrom);
-void vbd_free(struct vbd *vbd);
-
-unsigned long long vbd_size(struct vbd *vbd);
-unsigned int vbd_info(struct vbd *vbd);
-unsigned long vbd_secsize(struct vbd *vbd);
-
 struct phys_req {
 	unsigned short       dev;
 	unsigned short       nr_sects;
 	struct block_device *bdev;
 	blkif_sector_t       sector_number;
 };
-
-int vbd_translate(struct phys_req *req, struct blkif_st *blkif, int operation);
-
 int blkif_interface_init(void);
 
 int blkif_xenbus_init(void);

drivers/block/xen-blkback/xenbus.c

@@ -327,6 +327,56 @@ void xenvbd_sysfs_delif(struct xenbus_device *dev)
 	device_remove_file(&dev->dev, &dev_attr_physical_device);
 }
 
+
+static void vbd_free(struct vbd *vbd)
+{
+	if (vbd->bdev)
+		blkdev_put(vbd->bdev, vbd->readonly ? FMODE_READ : FMODE_WRITE);
+	vbd->bdev = NULL;
+}
+
+static int vbd_create(struct blkif_st *blkif, blkif_vdev_t handle,
+		      unsigned major, unsigned minor, int readonly,
+		      int cdrom)
+{
+	struct vbd *vbd;
+	struct block_device *bdev;
+
+	vbd = &blkif->vbd;
+	vbd->handle   = handle;
+	vbd->readonly = readonly;
+	vbd->type     = 0;
+
+	vbd->pdevice  = MKDEV(major, minor);
+
+	bdev = blkdev_get_by_dev(vbd->pdevice, vbd->readonly ?
+				 FMODE_READ : FMODE_WRITE, NULL);
+
+	if (IS_ERR(bdev)) {
+		DPRINTK("vbd_creat: device %08x could not be opened.\n",
+			vbd->pdevice);
+		return -ENOENT;
+	}
+
+	vbd->bdev = bdev;
+	vbd->size = vbd_sz(vbd);
+
+	if (vbd->bdev->bd_disk == NULL) {
+		DPRINTK("vbd_creat: device %08x doesn't exist.\n",
+			vbd->pdevice);
+		vbd_free(vbd);
+		return -ENOENT;
+	}
+
+	if (vbd->bdev->bd_disk->flags & GENHD_FL_CD || cdrom)
+		vbd->type |= VDISK_CDROM;
+	if (vbd->bdev->bd_disk->flags & GENHD_FL_REMOVABLE)
+		vbd->type |= VDISK_REMOVABLE;
+
+	DPRINTK("Successful creation of handle=%04x (dom=%u)\n",
+		handle, blkif->domid);
+	return 0;
+}
 static int blkback_remove(struct xenbus_device *dev)
 {
 	struct backend_info *be = dev_get_drvdata(&dev->dev);
@@ -595,7 +645,7 @@ static void connect(struct backend_info *be)
 		goto abort;
 
 	err = xenbus_printf(xbt, dev->nodename, "sectors", "%llu",
-			    vbd_size(&be->blkif->vbd));
+			    (unsigned long long)vbd_sz(&be->blkif->vbd));
 	if (err) {
 		xenbus_dev_fatal(dev, err, "writing %s/sectors",
 				 dev->nodename);
@@ -604,14 +654,16 @@ static void connect(struct backend_info *be)
 
 	/* FIXME: use a typename instead */
 	err = xenbus_printf(xbt, dev->nodename, "info", "%u",
-			    vbd_info(&be->blkif->vbd));
+			    be->blkif->vbd.type |
+			    (be->blkif->vbd.readonly ? VDISK_READONLY : 0));
 	if (err) {
 		xenbus_dev_fatal(dev, err, "writing %s/info",
 				 dev->nodename);
 		goto abort;
 	}
 	err = xenbus_printf(xbt, dev->nodename, "sector-size", "%lu",
-			    vbd_secsize(&be->blkif->vbd));
+			    (unsigned long)
+			    bdev_logical_block_size(be->blkif->vbd.bdev));
 	if (err) {
 		xenbus_dev_fatal(dev, err, "writing %s/sector-size",
 				 dev->nodename);