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[Qemu-block] [PATCH 1/2] block: make .bdrv_close optional
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[Qemu-block] [PATCH 1/2] block: make .bdrv_close optional |
Date: |
Tue, 14 Aug 2018 15:43:19 +0300 |
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
block.c | 4 +++-
block/snapshot.c | 4 +++-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/block.c b/block.c
index 39f373e035..9694018a68 100644
--- a/block.c
+++ b/block.c
@@ -3349,7 +3349,9 @@ static void bdrv_close(BlockDriverState *bs)
bdrv_drain(bs); /* in case flush left pending I/O */
if (bs->drv) {
- bs->drv->bdrv_close(bs);
+ if (bs->drv->bdrv_close) {
+ bs->drv->bdrv_close(bs);
+ }
bs->drv = NULL;
}
diff --git a/block/snapshot.c b/block/snapshot.c
index f9903bc94e..3218a542df 100644
--- a/block/snapshot.c
+++ b/block/snapshot.c
@@ -218,7 +218,9 @@ int bdrv_snapshot_goto(BlockDriverState *bs,
qobject_unref(file_options);
qdict_put_str(options, "file", bdrv_get_node_name(file));
- drv->bdrv_close(bs);
+ if (drv->bdrv_close) {
+ drv->bdrv_close(bs);
+ }
bdrv_unref_child(bs, bs->file);
bs->file = NULL;
--
2.11.1