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authorTrond Myklebust <trondmy@gmail.com>2019-04-24 17:46:49 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2019-04-26 17:39:42 -0400
commit3b7eb5e35d0f55541452e91ca66798c16a81ad4a (patch)
tree880b54beacb2a7dd021cac02b17bce6897138f9d /fs/lockd
parentNFS: Convert NFSv2 to use the container user namespace (diff)
downloadlinux-dev-3b7eb5e35d0f55541452e91ca66798c16a81ad4a.tar.xz
linux-dev-3b7eb5e35d0f55541452e91ca66798c16a81ad4a.zip
NFS: When mounting, don't share filesystems between different user namespaces
If two different containers that share the same network namespace attempt to mount the same filesystem, we should not allow them to share the same super block if they do not share the same user namespace, since the user mappings on the wire will need to differ. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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