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[Qemu-block] [PATCH v7 1/9] mirror: inherit supported write/zero flags
From: |
Anton Nefedov |
Subject: |
[Qemu-block] [PATCH v7 1/9] mirror: inherit supported write/zero flags |
Date: |
Thu, 18 Jan 2018 20:48:59 +0300 |
Signed-off-by: Anton Nefedov <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Reviewed-by: Alberto Garcia <address@hidden>
---
block/mirror.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/block/mirror.c b/block/mirror.c
index c9badc1..d18ec65 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -1064,6 +1064,11 @@ static void
bdrv_mirror_top_refresh_filename(BlockDriverState *bs, QDict *opts)
bdrv_refresh_filename(bs->backing->bs);
pstrcpy(bs->exact_filename, sizeof(bs->exact_filename),
bs->backing->bs->filename);
+ bs->supported_write_flags = BDRV_REQ_FUA &
+ bs->backing->bs->supported_write_flags;
+ bs->supported_zero_flags =
+ (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) &
+ bs->backing->bs->supported_zero_flags;
}
static void bdrv_mirror_top_close(BlockDriverState *bs)
--
2.7.4
[Qemu-block] [PATCH v7 5/9] file-posix: support BDRV_REQ_ALLOCATE, Anton Nefedov, 2018/01/18
[Qemu-block] [PATCH v7 7/9] qcow2: move is_zero() up, Anton Nefedov, 2018/01/18
[Qemu-block] [PATCH v7 3/9] block: introduce BDRV_REQ_ALLOCATE flag, Anton Nefedov, 2018/01/18