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nfs41: fix session fore channel negotiation 

If the rsize or wsize is not set on the mount command, negotiate the highest
supported rsize and wsize in session creation.

Fixes a bug where the client negotiated nfs41_maxwrite_overhead as
ca_maxrequestsize and nfs41_maxread_overhead as ca_maxresponsesize resulting
in NFS4ERR_REQ_TOO_BIG errors on writes.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Andy Adamson 2009-12-15 12:55:02 -05:00 committed by Trond Myklebust
parent a5523b84c4
commit 68bf05efb7
1 changed files with 10 additions and 2 deletions
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12
fs/nfs/nfs4proc.c
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@ -4935,14 +4935,22 @@ int nfs4_init_session(struct nfs_server *server)
{
struct nfs_client *clp = server->nfs_client;
struct nfs4_session *session;
unsigned int rsize, wsize;
int ret;
if (!nfs4_has_session(clp))
return 0;
rsize = server->rsize;
if (rsize == 0)
rsize = NFS_MAX_FILE_IO_SIZE;
wsize = server->wsize;
if (wsize == 0)
wsize = NFS_MAX_FILE_IO_SIZE;
session = clp->cl_session;
session->fc_attrs.max_rqst_sz = server->wsize + nfs41_maxwrite_overhead;
session->fc_attrs.max_resp_sz = server->rsize + nfs41_maxread_overhead;
session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead;
session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead;
ret = nfs4_recover_expired_lease(server);
if (!ret)