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| author |   Olga Kornievskaia <kolga@netapp.com> | 2019-06-04 16:14:30 -0400 |
|---|---|---|
| committer |   Olga Kornievskaia <olga.kornievskaia@gmail.com> | 2019-10-09 12:05:45 -0400 |
| commit | 0491567b51efeca807da1125a1a0d5193875e286 (patch) | |
| tree | f1c88abfe8baacdf33d4dbed412812eb8b2f6f76 /fs/nfs/nfs4file.c | |
| parent | NFS NFSD: defining nl4_servers structure needed by both (diff) | |
| download | linux-dev-0491567b51efeca807da1125a1a0d5193875e286.tar.xz linux-dev-0491567b51efeca807da1125a1a0d5193875e286.zip | |
NFS: add COPY_NOTIFY operation
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>
Diffstat (limited to '')
| -rw-r--r-- | fs/nfs/nfs4file.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index 339663d04bf8..686a6c4071e3 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -133,6 +133,9 @@ static ssize_t __nfs4_copy_file_range(struct file *file_in, loff_t pos_in, struct file *file_out, loff_t pos_out, size_t count, unsigned int flags) { + struct nfs42_copy_notify_res *cn_resp = NULL; + ssize_t ret; + /* Only offload copy if superblock is the same */ if (file_inode(file_in)->i_sb != file_inode(file_out)->i_sb) return -EXDEV; @@ -140,7 +143,22 @@ static ssize_t __nfs4_copy_file_range(struct file *file_in, loff_t pos_in, return -EOPNOTSUPP; if (file_inode(file_in) == file_inode(file_out)) return -EOPNOTSUPP; - return nfs42_proc_copy(file_in, pos_in, file_out, pos_out, count); + if (!nfs42_files_from_same_server(file_in, file_out)) { + cn_resp = kzalloc(sizeof(struct nfs42_copy_notify_res), + GFP_NOFS); + if (unlikely(cn_resp == NULL)) + return -ENOMEM; + + ret = nfs42_proc_copy_notify(file_in, file_out, cn_resp); + if (ret) { + ret = -EOPNOTSUPP; + goto out; + } + } + ret = nfs42_proc_copy(file_in, pos_in, file_out, pos_out, count); +out: + kfree(cn_resp); + return ret; } static ssize_t nfs4_copy_file_range(struct file *file_in, loff_t pos_in, |