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NFSD add nfs4 inter ssc to nfsd4_copy

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Given a universal address, mount the source server from the destination
server.  Use an internal mount. Call the NFS client nfs42_ssc_open to
obtain the NFS struct file suitable for nfsd_copy_range.

Ability to do "inter" server-to-server depends on the an nfsd kernel
parameter "inter_copy_offload_enable".

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
This commit is contained in:
Olga Kornievskaia
2019-10-09 11:50:48 -04:00
committed by J. Bruce Fields
parent b9e8638e3d
commit ce0887ac96
5 changed files with 296 additions and 28 deletions
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3
fs/nfsd/state.h
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@@ -680,6 +680,9 @@ extern struct nfsd4_copy *
find_async_copy(struct nfs4_client *clp, stateid_t *staetid);
extern void nfs4_put_cpntf_state(struct nfsd_net *nn,
struct nfs4_cpntf_state *cps);
extern __be32 manage_cpntf_state(struct nfsd_net *nn, stateid_t *st,
struct nfs4_client *clp,
struct nfs4_cpntf_state **cps);
static inline void get_nfs4_file(struct nfs4_file *fi)
{
refcount_inc(&fi->fi_ref);