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File _service:tar_scm:qemu-img-block-set-zero-flags-only-when-discard_zero.patch of Package qemu
From 48c792a802c8cb0ab670ddf92920e2e5e96747a4 Mon Sep 17 00:00:00 2001 From: Jinhua Cao <caojinhua1@huawei.com> Date: Mon, 18 Mar 2024 10:04:42 +0800 Subject: [PATCH] qemu-img block: set zero flags only when discard_zeros of the block supported zero flags set for block discard_zeros, only when the block support discard_zeros need set these flags. old commit info: qemu-img: block: dont blk_make_zero if discard_zeroes false Signed-off-by: Jinhua Cao <caojinhua1@huawei.com> --- block/file-posix.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/file-posix.c b/block/file-posix.c index 01ae5fd88c..4782aba59f 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -822,7 +822,7 @@ static int raw_open_common(BlockDriverState *bs, QDict *options, #endif s->needs_alignment = raw_needs_alignment(bs); - bs->supported_zero_flags = BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK; + bs->supported_zero_flags = s->discard_zeroes ? (BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) : 0; if (S_ISREG(st.st_mode)) { /* When extending regular files, we get zeros from the OS */ bs->supported_truncate_flags = BDRV_REQ_ZERO_WRITE; -- 2.27.0
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