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NFS add support for asynchronous COPY

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Change xdr to always send COPY asynchronously.

Keep the list copies send in a list under a server structure.
Once copy is sent, it waits on a completion structure that will
be signalled by the callback thread that receives CB_OFFLOAD.

If CB_OFFLOAD returned an error and even if it returned partial
bytes, ignore them (as we can't commit without a verifier to
match) and return an error.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Olga Kornievskaia 2018-07-09 15:13:31 -04:00 • committed by Anna Schumaker
parent 67aa7444c4
commit 62164f3179
7 changed files with 104 additions and 9 deletions
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9
include/linux/nfs_fs.h
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@ -185,6 +185,15 @@ struct nfs_inode {
struct inode vfs_inode;
};
struct nfs4_copy_state {
struct list_head copies;
nfs4_stateid stateid;
struct completion completion;
uint64_t count;
struct nfs_writeverf verf;
int error;
};
/*
* Access bit flags
*/