Re: [PATCH v2 1/5] NFSD: OFFLOAD_CANCEL should mark an async COPY as completed

[Jeff Layton <jlayton@kernel.org>]

On Sat, 2025-03-01 at 13:31 -0500, cel@kernel.org wrote:
> From: Chuck Lever <chuck.lever@oracle.com>
> 
> Update the status of an async COPY operation when it has been
> stopped. OFFLOAD_STATUS needs to indicate that the COPY is no longer
> running.
> 
> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
> ---
>  fs/nfsd/nfs4proc.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
> index f6e06c779d09..9a0e68aa246f 100644
> --- a/fs/nfsd/nfs4proc.c
> +++ b/fs/nfsd/nfs4proc.c
> @@ -1379,8 +1379,11 @@ static void nfs4_put_copy(struct nfsd4_copy *copy)
>  static void nfsd4_stop_copy(struct nfsd4_copy *copy)
>  {
>  	trace_nfsd_copy_async_cancel(copy);
> -	if (!test_and_set_bit(NFSD4_COPY_F_STOPPED, &copy->cp_flags))
> +	if (!test_and_set_bit(NFSD4_COPY_F_STOPPED, &copy->cp_flags)) {
>  		kthread_stop(copy->copy_task);
> +		copy->nfserr = nfs_ok;
> +		set_bit(NFSD4_COPY_F_COMPLETED, &copy->cp_flags);
> +	}
>  	nfs4_put_copy(copy);
>  }
>  

STOPPED and COMPLETED seem to basically track each other. What's the
distinction between the two bits? When is one set, but not the other?
-- 
Jeff Layton <jlayton@kernel.org>