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-rw-r--r--drivers/block/xen-blkback/blkback.c78
-rw-r--r--drivers/block/xen-blkback/common.h22
-rw-r--r--drivers/block/xen-blkback/xenbus.c58
3 files changed, 65 insertions, 93 deletions
diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index 63001fac9af2..806c2c947c63 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/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 @@ again:
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(
diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h
index 6257c1106591..4b5acb3e8b24 100644
--- a/drivers/block/xen-blkback/common.h
+++ b/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);
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index c6c5286aa813..75bf49bd365c 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/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 @@ again:
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 @@ again:
/* 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);
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