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authorFam Zheng <famz@redhat.com>2014-05-23 21:29:46 +0800
committerStefan Hajnoczi <stefanha@redhat.com>2014-05-28 14:28:46 +0200
commit920beae1037dc7d98cd876da8c83b402234c7dba (patch)
treec3887a25b74b5b769911376bc588a819f857ee09 /block
parent8d24cce1e325c4bd47a8b1984d6db599f5a7a8e9 (diff)
block: Use bdrv_set_backing_hd everywhere
We need to handle the coming backing_blocker properly, so don't open code the assignment, instead, call bdrv_set_backing_hd to change backing_hd. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block')
-rw-r--r--block/stream.c4
-rw-r--r--block/vvfat.c2
2 files changed, 3 insertions, 3 deletions
diff --git a/block/stream.c b/block/stream.c
index dd0b4ac3d2..91d18a2db7 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -60,7 +60,7 @@ static void close_unused_images(BlockDriverState *top, BlockDriverState *base,
/* Must assign before bdrv_delete() to prevent traversing dangling pointer
* while we delete backing image instances.
*/
- top->backing_hd = base;
+ bdrv_set_backing_hd(top, base);
while (intermediate) {
BlockDriverState *unused;
@@ -72,7 +72,7 @@ static void close_unused_images(BlockDriverState *top, BlockDriverState *base,
unused = intermediate;
intermediate = intermediate->backing_hd;
- unused->backing_hd = NULL;
+ bdrv_set_backing_hd(unused, NULL);
bdrv_unref(unused);
}
diff --git a/block/vvfat.c b/block/vvfat.c
index c3af7ff4c5..417e96fe9b 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -2947,7 +2947,7 @@ static int enable_write_target(BDRVVVFATState *s)
unlink(s->qcow_filename);
#endif
- s->bs->backing_hd = bdrv_new("", &error_abort);
+ bdrv_set_backing_hd(s->bs, bdrv_new("", &error_abort));
s->bs->backing_hd->drv = &vvfat_write_target;
s->bs->backing_hd->opaque = g_malloc(sizeof(void*));
*(void**)s->bs->backing_hd->opaque = s;