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qcow2: Re-initialize lock in invalidate_cache

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After clearing our state (memset()-ing it to 0), we should
re-initialize objects that need it.  Specifically, that applies to
s->lock, which is originally initialized in qcow2_open().

Given qemu_co_mutex_init() is just a memset() to 0, this is functionally
a no-op, but still seems like the right thing to do.

Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
Message-ID: <20251110154854.151484-12-hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Hanna Czenczek
2025-11-18 18:01:55 +01:00
committed by Kevin Wolf
parent 9b9ee60c07
commit 90db3a1721
1 changed files with 2 additions and 0 deletions
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block/qcow2.c
+2
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@@ -2873,6 +2873,8 @@ qcow2_co_invalidate_cache(BlockDriverState *bs, Error **errp)
data_file = s->data_file;
memset(s, 0, sizeof(BDRVQcow2State));
s->data_file = data_file;
/* Re-initialize objects initialized in qcow2_open() */
qemu_co_mutex_init(&s->lock);
options = qdict_clone_shallow(bs->options);