提交 c4a248a1 编写于 作者: P Paolo Bonzini 提交者: Kevin Wolf

block: copy enable_write_cache in bdrv_append

Because the guest will be able to flip enable_write_cache, the actual
state may not match what is used to open the new snapshot.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
上级 ad492c92
......@@ -1000,6 +1000,8 @@ void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top)
tmp.buffer_alignment = bs_top->buffer_alignment;
tmp.copy_on_read = bs_top->copy_on_read;
tmp.enable_write_cache = bs_top->enable_write_cache;
/* i/o timing parameters */
tmp.slice_time = bs_top->slice_time;
tmp.slice_start = bs_top->slice_start;
......
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