Merge branch 'nfs-for-3.3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

* 'nfs-for-3.3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4: Change the default setting of the nfs4_disable_idmapping parameter
  NFSv4: Save the owner/group name string when doing open
  NFS: Remove pNFS bloat from the generic write path
  pnfs-obj: Must return layout on IO error
  pnfs-obj: pNFS errors are communicated on iodata->pnfs_error
  NFS: Cache state owners after files are closed
  NFS: Clean up nfs4_find_state_owners_locked()
  NFSv4: include bitmap in nfsv4 get acl data
  nfs: fix a minor do_div portability issue
  NFSv4.1: cleanup comment and debug printk
  NFSv4.1: change nfs4_free_slot parameters for dynamic slots
  NFSv4.1: cleanup init and reset of session slot tables
  NFSv4.1: fix backchannel slotid off-by-one bug
  nfs: fix regression in handling of context= option in NFSv4
  NFS - fix recent breakage to NFS error handling.
  NFS: Retry mounting NFSROOT
  SUNRPC: Clean up the RPCSEC_GSS service ticket requests

1 files changed, 11 insertions, 6 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 9373d95319c1..73baff1e0c70 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1634,12 +1634,17 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                         The default is to return 64-bit inode numbers.
 
         nfs.nfs4_disable_idmapping=
-                        [NFSv4] When set, this option disables the NFSv4
-                        idmapper on the client, but only if the mount
-                        is using the 'sec=sys' security flavour. This may
-                        make migration from legacy NFSv2/v3 systems easier
-                        provided that the server has the appropriate support.
-                        The default is to always enable NFSv4 idmapping.
+                        [NFSv4] When set to the default of '1', this option
+                        ensures that both the RPC level authentication
+                        scheme and the NFS level operations agree to use
+                        numeric uids/gids if the mount is using the
+                        'sec=sys' security flavour. In effect it is
+                        disabling idmapping, which can make migration from
+                        legacy NFSv2/v3 systems to NFSv4 easier.
+                        Servers that do not support this mode of operation
+                        will be autodetected by the client, and it will fall
+                        back to using the idmapper.
+                        To turn off this behaviour, set the value to '0'.
 
         nmi_debug=      [KNL,AVR32,SH] Specify one or more actions to take
                         when a NMI is triggered.