linux-kernel - Re: [PATCH 5.19 554/717] NFSD: Return nfserr_serverfault if splice

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Date:   Sat, 22 Oct 2022 14:46:35 +0000
From:   Chuck Lever III <chuck.lever@...cle.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     LKML <linux-kernel@...r.kernel.org>,
        linux-stable <stable@...r.kernel.org>,
        Anna Schumaker <Anna.Schumaker@...app.com>,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [PATCH 5.19 554/717] NFSD: Return nfserr_serverfault if splice_ok
 but buf->pages have data



> On Oct 22, 2022, at 3:27 AM, Greg Kroah-Hartman <gregkh@...uxfoundation.org> wrote:
> 
> From: Anna Schumaker <Anna.Schumaker@...app.com>
> 
> [ Upstream commit 06981d560606ac48d61e5f4fff6738b925c93173 ]
> 
> This was discussed with Chuck as part of this patch set. Returning
> nfserr_resource was decided to not be the best error message here, and
> he suggested changing to nfserr_serverfault instead.
> 
> Signed-off-by: Anna Schumaker <Anna.Schumaker@...app.com>
> Link: https://lore.kernel.org/linux-nfs/20220907195259.926736-1-anna@kernel.org/T/#t
> Signed-off-by: Chuck Lever <chuck.lever@...cle.com>
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
> fs/nfsd/nfs4xdr.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
> index eef98e3f4ae5..1e5822d00043 100644
> --- a/fs/nfsd/nfs4xdr.c
> +++ b/fs/nfsd/nfs4xdr.c
> @@ -3995,7 +3995,7 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
> 	if (resp->xdr->buf->page_len &&
> 	    test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) {
> 		WARN_ON_ONCE(1);
> -		return nfserr_resource;
> +		return nfserr_serverfault;
> 	}
> 	xdr_commit_encode(xdr);

Why is this change to be included in stable kernels?


--
Chuck Lever