erofs: introduce 'domain_id' mount option
Introduce 'domain_id' mount option to enable shared domain sementics. In which case, the related cookie is shared if two mountpoints in the same domain have the same data blob. Users could specify the name of domain by this mount option. Signed-off-by: Jia Zhu <zhujia.zj@bytedance.com> Reviewed-by: Jingbo Xu <jefflexu@linux.alibaba.com> Link: https://lore.kernel.org/r/20220918043456.147-7-zhujia.zj@bytedance.com Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
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7d419637
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