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NFS: add COPY_NOTIFY operation

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Try using the delegation stateid, then the open stateid.

Only NL4_NETATTR, No support for NL4_NAME and NL4_URL.
Allow only one source server address to be returned for now.

To distinguish between same server copy offload ("intra") and
a copy between different server ("inter"), do a check of server
owner identity and also make sure server is capable of doing
a copy offload.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
This commit is contained in:
Olga Kornievskaia
2019-06-04 16:14:30 -04:00
committed by Olga Kornievskaia
parent f9bdad8ca8
commit 0491567b51
11 changed files with 323 additions and 2 deletions
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fs/nfs/nfs4_fs.h
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@@ -457,6 +457,8 @@ int nfs41_discover_server_trunking(struct nfs_client *clp,
struct nfs_client **, const struct cred *);
extern void nfs4_schedule_session_recovery(struct nfs4_session *, int);
extern void nfs41_notify_server(struct nfs_client *);
bool nfs4_check_serverowner_major_id(struct nfs41_server_owner *o1,
struct nfs41_server_owner *o2);
#else
static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err)
{