Merge branch 'for-2.6.31' of git://fieldses.org/git/linux-nfsd

* 'for-2.6.31' of git://fieldses.org/git/linux-nfsd: (60 commits)
  SUNRPC: Fix the TCP server's send buffer accounting
  nfsd41: Backchannel: minorversion support for the back channel
  nfsd41: Backchannel: cleanup nfs4.0 callback encode routines
  nfsd41: Remove ip address collision detection case
  nfsd: optimise the starting of zero threads when none are running.
  nfsd: don't take nfsd_mutex twice when setting number of threads.
  nfsd41: sanity check client drc maxreqs
  nfsd41: move channel attributes from nfsd4_session to a nfsd4_channel_attr struct
  NFS: kill off complicated macro 'PROC'
  sunrpc: potential memory leak in function rdma_read_xdr
  nfsd: minor nfsd_vfs_write cleanup
  nfsd: Pull write-gathering code out of nfsd_vfs_write
  nfsd: track last inode only in use_wgather case
  sunrpc: align cache_clean work's timer
  nfsd: Use write gathering only with NFSv2
  NFSv4: kill off complicated macro 'PROC'
  NFSv4: do exact check about attribute specified
  knfsd: remove unreported filehandle stats counters
  knfsd: fix reply cache memory corruption
  knfsd: reply cache cleanups
  ...

1 files changed, 10 insertions, 2 deletions

diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index cbba4a935786..d4c9884cd54b 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -390,12 +390,14 @@ nfsd_svc(unsigned short port, int nrservs)
 
         mutex_lock(&nfsd_mutex);
         dprintk("nfsd: creating service\n");
-        error = -EINVAL;
         if (nrservs <= 0)
                 nrservs = 0;
         if (nrservs > NFSD_MAXSERVS)
                 nrservs = NFSD_MAXSERVS;
-        
+        error = 0;
+        if (nrservs == 0 && nfsd_serv == NULL)
+                goto out;
+
         /* Readahead param cache - will no-op if it already exists */
         error = nfsd_racache_init(2*nrservs);
         if (error<0)
@@ -413,6 +415,12 @@ nfsd_svc(unsigned short port, int nrservs)
                 goto failure;
 
         error = svc_set_num_threads(nfsd_serv, NULL, nrservs);
+        if (error == 0)
+                /* We are holding a reference to nfsd_serv which
+                 * we don't want to count in the return value,
+                 * so subtract 1
+                 */
+                error = nfsd_serv->sv_nrthreads - 1;
  failure:
         svc_destroy(nfsd_serv);         /* Release server */
  out: