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[PATCH 2/5] block/prl-xml: add bdrv_co_readv/writev and flush
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[PATCH 2/5] block/prl-xml: add bdrv_co_readv/writev and flush |
Date: |
Fri, 13 Nov 2020 15:58:45 +0300 |
From: Klim Kireev <klim.kireev@virtuozzo.com>
This commit adds bdrv_co_readv, bdrv_co_writev, and bdrv_co_flush_to_os
implementation. It merely passes these functions down
to top BlockDriverState in the snapshot chain.
Signed-off-by: Klim Kireev <klim.kireev@virtuozzo.com>
Signed-off-by: Edgar Kaziakhmedov <edgar.kaziakhmedov@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy<vsementsov@virtuozzo.com>
---
block/prl-xml.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/block/prl-xml.c b/block/prl-xml.c
index fa9c4fd5fa..5ab32bb6ab 100644
--- a/block/prl-xml.c
+++ b/block/prl-xml.c
@@ -467,6 +467,22 @@ fail:
return ret;
}
+static coroutine_fn int
+prl_co_readv(BlockDriverState *bs, int64_t sector_num,
+ int nb_sectors, QEMUIOVector *qiov)
+{
+ BDRVPrlXmlState *s = bs->opaque;
+ return bdrv_co_readv(s->image, sector_num, nb_sectors, qiov);
+}
+
+static coroutine_fn int
+prl_co_writev(BlockDriverState *bs, int64_t sector_num,
+ int nb_sectors, QEMUIOVector *qiov)
+{
+ BDRVPrlXmlState *s = bs->opaque;
+ return bdrv_co_writev(s->image, sector_num, nb_sectors, qiov);
+}
+
static void prl_close_xml(BlockDriverState *bs)
{
BDRVPrlXmlState *s = bs->opaque;
@@ -474,11 +490,20 @@ static void prl_close_xml(BlockDriverState *bs)
xmlFreeDoc(s->xml);
}
+static coroutine_fn int prl_co_flush_to_os(BlockDriverState *bs)
+{
+ BDRVPrlXmlState *s = bs->opaque;
+ return bdrv_co_flush(s->image->bs);
+}
+
static BlockDriver bdrv_prl_xml = {
.format_name = "prl-xml",
.instance_size = sizeof(BDRVPrlXmlState),
.bdrv_open = prl_open_xml,
+ .bdrv_co_readv = prl_co_readv,
+ .bdrv_co_writev = prl_co_writev,
.bdrv_close = prl_close_xml,
+ .bdrv_co_flush_to_os = prl_co_flush_to_os,
.create_opts = &prl_xml_create_opts,
.bdrv_child_perm = bdrv_filter_default_perms,
.is_filter = true
--
2.21.3