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[Qemu-devel] [PATCH v14 09/14] stream: Use bdrv_drop_intermediate and dr
From: |
Fam Zheng |
Subject: |
[Qemu-devel] [PATCH v14 09/14] stream: Use bdrv_drop_intermediate and drop close_unused_images |
Date: |
Wed, 19 Feb 2014 21:42:26 +0800 |
This reuses the new bdrv_drop_intermediate.
Signed-off-by: Fam Zheng <address@hidden>
---
block/stream.c | 30 +-----------------------------
1 file changed, 1 insertion(+), 29 deletions(-)
diff --git a/block/stream.c b/block/stream.c
index dd0b4ac..9cdcf0e 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -51,34 +51,6 @@ static int coroutine_fn stream_populate(BlockDriverState *bs,
return bdrv_co_copy_on_readv(bs, sector_num, nb_sectors, &qiov);
}
-static void close_unused_images(BlockDriverState *top, BlockDriverState *base,
- const char *base_id)
-{
- BlockDriverState *intermediate;
- intermediate = top->backing_hd;
-
- /* Must assign before bdrv_delete() to prevent traversing dangling pointer
- * while we delete backing image instances.
- */
- top->backing_hd = base;
-
- while (intermediate) {
- BlockDriverState *unused;
-
- /* reached base */
- if (intermediate == base) {
- break;
- }
-
- unused = intermediate;
- intermediate = intermediate->backing_hd;
- unused->backing_hd = NULL;
- bdrv_unref(unused);
- }
-
- bdrv_refresh_limits(top);
-}
-
static void coroutine_fn stream_run(void *opaque)
{
StreamBlockJob *s = opaque;
@@ -192,7 +164,7 @@ wait:
}
}
ret = bdrv_change_backing_file(bs, base_id, base_fmt);
- close_unused_images(bs, base, base_id);
+ bdrv_drop_intermediate(bs, bs->backing_hd, base);
}
qemu_vfree(buf);
--
1.8.5.4
- Re: [Qemu-devel] [PATCH v14 06/14] block: Add backing_blocker in BlockDriverState, (continued)
[Qemu-devel] [PATCH v14 07/14] block: Parse "backing" option to reference existing BDS, Fam Zheng, 2014/02/19
[Qemu-devel] [PATCH v14 08/14] block: Support dropping active in bdrv_drop_intermediate, Fam Zheng, 2014/02/19
[Qemu-devel] [PATCH v14 09/14] stream: Use bdrv_drop_intermediate and drop close_unused_images,
Fam Zheng <=
[Qemu-devel] [PATCH v14 10/14] qmp: Add command 'blockdev-backup', Fam Zheng, 2014/02/19
[Qemu-devel] [PATCH v14 12/14] block: Add blockdev-backup to transaction, Fam Zheng, 2014/02/19
[Qemu-devel] [PATCH v14 11/14] block: Allow backup on referenced named BlockDriverState, Fam Zheng, 2014/02/19
[Qemu-devel] [PATCH v14 13/14] qemu-iotests: Test blockdev-backup in 055, Fam Zheng, 2014/02/19
[Qemu-devel] [PATCH v14 14/14] qemu-iotests: Image fleecing test case 081, Fam Zheng, 2014/02/19