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2020-10-15NFSv4: Fix up RCU annotations for struct nfs_netns_clientTrond Myklebust1-3/+8
The identifier is read as an RCU protected string. Its value may be changed during the lifetime of the network namespace by writing a new string into the sysfs pseudofile (at which point, we free the old string only after a call to synchronize_rcu()). Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2019-11-18fs: nfs: sysfs: Remove NULL check before kfreeSaurav Girepunje1-2/+1
Remove NULL check before kfree, NULL check is taken care on kfree. Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2019-07-06NFS: Add sysfs support for per-container identifierTrond Myklebust1-0/+118
In order to identify containers to the NFS client, we add a per-net sysfs attribute that udev can fill with the appropriate identifier. The identifier could be a unique hostname, but in most cases it will probably be a persisted uuid. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2019-07-06NFS: Create a root NFS directory in /sys/fs/nfsTrond Myklebust1-0/+69
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>