Re: [Qemu-devel] [PATCH v5 01/27] block: Add flag bits for image locking

[Max Reitz]

On 17.05.2016 09:35, Fam Zheng wrote:
> Later the block layer will automatically lock the images to avoid unexpected
> concurrent accesses to the same image, which will easily corrupt the metadata
> or user data, unless in some very special cases, like migration.
> 
> The exceptional cases like shared storage migration and testing should
> set BDRV_O_SHARED_LOCK or BDRV_O_NO_LOCK to advise an appropriate
> locking mode.
> 
> Signed-off-by: Fam Zheng <address@hidden>
> ---
>  include/block/block.h | 2 ++
>  1 file changed, 2 insertions(+)

Reviewed-by: Max Reitz <address@hidden>

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