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| author | Chuck Lever <chuck.lever@oracle.com> | 2020-11-05 10:24:19 -0500 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2020-11-30 13:00:22 -0500 |
| commit | 76e5492b161f555c0fb69cad9eb39a7d8467f5fe (patch) | |
| tree | 3e9138d9e6fdeac58c6a4f434ef5daee79b2eb51 /fs/nfsd/nfsxdr.c | |
| parent | 03493bca084fdca48abc59b00e06ce733aa9eb7d (diff) | |
| download | linux-76e5492b161f555c0fb69cad9eb39a7d8467f5fe.tar.bz2 | |
NFSD: Invoke svc_encode_result_payload() in "read" NFSD encoders
Have the NFSD encoders annotate the boundaries of every
direct-data-placement eligible result data payload. Then change
svcrdma to use that annotation instead of the xdr->page_len
when handling Write chunks.
For NFSv4 on RDMA, that enables the ability to recognize multiple
result payloads per compound. This is a pre-requisite for supporting
multiple Write chunks per RPC transaction.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/nfsxdr.c')
| -rw-r--r-- | fs/nfsd/nfsxdr.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c index 8a288c8fcd57..9e00a902113e 100644 --- a/fs/nfsd/nfsxdr.c +++ b/fs/nfsd/nfsxdr.c @@ -469,6 +469,7 @@ int nfssvc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p) { struct nfsd_readlinkres *resp = rqstp->rq_resp; + struct kvec *head = rqstp->rq_res.head; *p++ = resp->status; if (resp->status != nfs_ok) @@ -483,6 +484,8 @@ nfssvc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p) *p = 0; rqstp->rq_res.tail[0].iov_len = 4 - (resp->len&3); } + if (svc_encode_result_payload(rqstp, head->iov_len, resp->len)) + return 0; return 1; } @@ -490,6 +493,7 @@ int nfssvc_encode_readres(struct svc_rqst *rqstp, __be32 *p) { struct nfsd_readres *resp = rqstp->rq_resp; + struct kvec *head = rqstp->rq_res.head; *p++ = resp->status; if (resp->status != nfs_ok) @@ -507,6 +511,8 @@ nfssvc_encode_readres(struct svc_rqst *rqstp, __be32 *p) *p = 0; rqstp->rq_res.tail[0].iov_len = 4 - (resp->count&3); } + if (svc_encode_result_payload(rqstp, head->iov_len, resp->count)) + return 0; return 1; } |