27 lines
949 B
Diff
27 lines
949 B
Diff
From 724134432ef21f1fb2b18bbe55b891d31181ccca Mon Sep 17 00:00:00 2001
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From: Jinhua Cao <caojinhua1@huawei.com>
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Date: Fri, 11 Feb 2022 14:25:39 +0800
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Subject: [PATCH] qemu-img: block: dont blk_make_zero if discard_zeroes false
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Signed-off-by: Jinhua Cao <caojinhua1@huawei.com>
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---
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block/file-posix.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/block/file-posix.c b/block/file-posix.c
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index b283093e5b..aed7529f44 100644
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--- a/block/file-posix.c
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+++ b/block/file-posix.c
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@@ -804,7 +804,7 @@ static int raw_open_common(BlockDriverState *bs, QDict *options,
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}
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#endif
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- bs->supported_zero_flags = BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK;
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+ bs->supported_zero_flags = s->discard_zeroes ? (BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) : 0;
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if (S_ISREG(st.st_mode)) {
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/* When extending regular files, we get zeros from the OS */
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bs->supported_truncate_flags = BDRV_REQ_ZERO_WRITE;
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--
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2.27.0
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