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| author | Chuck Lever <chuck.lever@oracle.com> | 2015-08-03 13:04:26 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2015-08-05 16:21:28 -0400 |
| commit | 2fcc213a18644610c79edbb5e847d73c6c5d5ded (patch) | |
| tree | 24d5f10a807a088046882981005be2ceb69739b2 /fs/nfs | |
| parent | 677eb17e94edfbbea3b7e628d8aa046930f102c3 (diff) | |
| download | linux-2fcc213a18644610c79edbb5e847d73c6c5d5ded.tar.gz linux-2fcc213a18644610c79edbb5e847d73c6c5d5ded.tar.bz2 linux-2fcc213a18644610c79edbb5e847d73c6c5d5ded.zip | |
xprtrdma: Fix large NFS SYMLINK calls
Repair how rpcrdma_marshal_req() chooses which RDMA message type
to use for large non-WRITE operations so that it picks RDMA_NOMSG
in the correct situations, and sets up the marshaling logic to
SEND only the RPC/RDMA header.
Large NFSv2 SYMLINK requests now use RDMA_NOMSG calls. The Linux NFS
server XDR decoder for NFSv2 SYMLINK does not handle having the
pathname argument arrive in a separate buffer. The decoder could be
fixed, but this is simpler and RDMA_NOMSG can be used in a variety
of other situations.
Ensure that the Linux client continues to use "RDMA_MSG + read
list" when sending large NFSv3 SYMLINK requests, which is more
efficient than using RDMA_NOMSG.
Large NFSv4 CREATE(NF4LNK) requests are changed to use "RDMA_MSG +
read list" just like NFSv3 (see Section 5 of RFC 5667). Before,
these did not work at all.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/nfs3xdr.c | 1 | ||||
| -rw-r--r-- | fs/nfs/nfs4xdr.c | 4 |
2 files changed, 4 insertions, 1 deletions
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index 9b04c2e6fffc..267126d32ec0 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -1103,6 +1103,7 @@ static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, { encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen); encode_symlinkdata3(xdr, args); + xdr->buf->flags |= XDRBUF_WRITE; } /* diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 558cd65dbdb7..c42459e45f62 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1154,7 +1154,9 @@ static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg * case NF4LNK: p = reserve_space(xdr, 4); *p = cpu_to_be32(create->u.symlink.len); - xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len); + xdr_write_pages(xdr, create->u.symlink.pages, 0, + create->u.symlink.len); + xdr->buf->flags |= XDRBUF_WRITE; break; case NF4BLK: case NF4CHR: |