erofs: introduce 'domain_id' mount option

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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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Jia Zhu 2022-09-18 12:34:56 +08:00 • committed by Gao Xiang

parent 7d41963759

commit 2ef1644141

2 changed files with 34 additions and 2 deletions

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17

fs/erofs/super.c

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19

fs/erofs/sysfs.c

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