block: make bdrv_delete() static

Manage BlockDriverState lifecycle with refcnt, so bdrv_delete() is no
longer public and should be called by bdrv_unref() if refcnt is
decreased to 0.

This is an identical change because effectively, there's no multiple
reference of BDS now: no caller of bdrv_ref() yet, only bdrv_new() sets
bs->refcnt to 1, so all bdrv_unref() now actually delete the BDS.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/qemu-io.c b/qemu-io.c
index d54dc86..71f4ff1 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -32,7 +32,7 @@ static char **cmdline;
 
 static int close_f(BlockDriverState *bs, int argc, char **argv)
 {
-    bdrv_delete(bs);
+    bdrv_unref(bs);
     qemuio_bs = NULL;
     return 0;
 }
@@ -61,7 +61,7 @@ static int openfile(char *name, int flags, int growable)
 
         if (bdrv_open(qemuio_bs, name, NULL, flags, NULL) < 0) {
             fprintf(stderr, "%s: can't open device %s\n", progname, name);
-            bdrv_delete(qemuio_bs);
+            bdrv_unref(qemuio_bs);
             qemuio_bs = NULL;
             return 1;
         }
@@ -422,7 +422,7 @@ int main(int argc, char **argv)
     bdrv_drain_all();
 
     if (qemuio_bs) {
-        bdrv_delete(qemuio_bs);
+        bdrv_unref(qemuio_bs);
     }
     return 0;
 }