Merge tag 'nfs-for-3.5-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "New features include:
   - Rewrite the O_DIRECT code so that it can share the same coalescing
     and pNFS functionality as the page cache code.
   - Allow the server to provide hints as to when we should use pNFS,
     and when it is more efficient to read and write through the
     metadata server.
   - NFS cache consistency updates:
     * Use the ctime to emulate a change attribute for NFSv2/v3 so that
       all NFS versions can share the same cache management code.
     * New cache management code will only look at the change attribute
       and size attribute when deciding whether or not our cached data
       is still valid or not.
     * Don't request NFSv4 post-op attributes on writes in cases such as
       O_DIRECT, where we don't care about data cache consistency, or
       when we have a write delegation, and know that our cache is still
       consistent.
     * Don't request NFSv4 post-op attributes on operations such as
       COMMIT, where there are no expected metadata updates.
     * Don't request NFSv4 directory post-op attributes in cases where
       the operations themselves already return change attribute
       updates: i.e. operations such as OPEN, CREATE, REMOVE, LINK and
       RENAME.
   - Speed up 'ls' and friends by using READDIR rather than READDIRPLUS
     if we detect no attempts to lookup filenames.
   - Improve the code sharing between NFSv2/v3 and v4 mounts
   - NFSv4.1 state management efficiency improvements
   - More patches in preparation for NFSv4/v4.1 migration functionality."

Fix trivial conflict in fs/nfs/nfs4proc.c that was due to the dcache
qstr name initialization changes (that made the length/hash a 64-bit
union)

* tag 'nfs-for-3.5-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (146 commits)
  NFSv4: Add debugging printks to state manager
  NFSv4: Map NFS4ERR_SHARE_DENIED into an EACCES error instead of EIO
  NFSv4: update_changeattr does not need to set NFS_INO_REVAL_PAGECACHE
  NFSv4.1: nfs4_reset_session should use nfs4_handle_reclaim_lease_error
  NFSv4.1: Handle other occurrences of NFS4ERR_CONN_NOT_BOUND_TO_SESSION
  NFSv4.1: Handle NFS4ERR_CONN_NOT_BOUND_TO_SESSION in the state manager
  NFSv4.1: Handle errors in nfs4_bind_conn_to_session
  NFSv4.1: nfs4_bind_conn_to_session should drain the session
  NFSv4.1: Don't clobber the seqid if exchange_id returns a confirmed clientid
  NFSv4.1: Add DESTROY_CLIENTID
  NFSv4.1: Ensure we use the correct credentials for bind_conn_to_session
  NFSv4.1: Ensure we use the correct credentials for session create/destroy
  NFSv4.1: Move NFSPROC4_CLNT_BIND_CONN_TO_SESSION to the end of the operations
  NFSv4.1: Handle NFS4ERR_SEQ_MISORDERED when confirming the lease
  NFSv4: When purging the lease, we must clear NFS4CLNT_LEASE_CONFIRM
  NFSv4: Clean up the error handling for nfs4_reclaim_lease
  NFSv4.1: Exchange ID must use GFP_NOFS allocation mode
  nfs41: Use BIND_CONN_TO_SESSION for CB_PATH_DOWN*
  nfs4.1: add BIND_CONN_TO_SESSION operation
  NFSv4.1 test the mdsthreshold hint parameters
  ...

1 files changed, 4 insertions, 3 deletions

diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 6fe2dcead150..3c83035cdaa9 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -979,20 +979,21 @@ static void xprt_alloc_slot(struct rpc_task *task)
                 list_del(&req->rq_list);
                 goto out_init_req;
         }
-        req = xprt_dynamic_alloc_slot(xprt, GFP_NOWAIT);
+        req = xprt_dynamic_alloc_slot(xprt, GFP_NOWAIT|__GFP_NOWARN);
         if (!IS_ERR(req))
                 goto out_init_req;
         switch (PTR_ERR(req)) {
         case -ENOMEM:
-                rpc_delay(task, HZ >> 2);
                 dprintk("RPC:       dynamic allocation of request slot "
                                 "failed! Retrying\n");
+                task->tk_status = -ENOMEM;
                 break;
         case -EAGAIN:
                 rpc_sleep_on(&xprt->backlog, task, NULL);
                 dprintk("RPC:       waiting for request slot\n");
+        default:
+                task->tk_status = -EAGAIN;
         }
-        task->tk_status = -EAGAIN;
         return;
 out_init_req:
         task->tk_status = 0;