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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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include/linux/nfs_fs_sb.h
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@@ -276,5 +276,6 @@ struct nfs_server {
#define NFS_CAP_COPY (1U << 24)
#define NFS_CAP_OFFLOAD_CANCEL (1U << 25)
#define NFS_CAP_LAYOUTERROR (1U << 26)
#define NFS_CAP_COPY_NOTIFY (1U << 27)
#endif