releases/4.8.5/nfsv4-open-state-recovery-must-account-for-file-permission-changes.patch

   1 From 304020fe48c6c7fff8b5a38f382b54404f0f79d3 Mon Sep 17 00:00:00 2001
   2 From: Trond Myklebust <trond.myklebust@primarydata.com>
   3 Date: Thu, 22 Sep 2016 13:39:18 -0400
   4 Subject: NFSv4: Open state recovery must account for file permission changes
   5
   6 From: Trond Myklebust <trond.myklebust@primarydata.com>
   7
   8 commit 304020fe48c6c7fff8b5a38f382b54404f0f79d3 upstream.
   9
  10 If the file permissions change on the server, then we may not be able to
  11 recover open state. If so, we need to ensure that we mark the file
  12 descriptor appropriately.
  13
  14 Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
  15 Tested-by: Oleg Drokin <green@linuxhacker.ru>
  16 Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
  17 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  18
  19 ---
  20  fs/nfs/nfs4state.c |    3 +++
  21  1 file changed, 3 insertions(+)
  22
  23 --- a/fs/nfs/nfs4state.c
  24 +++ b/fs/nfs/nfs4state.c
  25 @@ -1498,6 +1498,9 @@ restart:
  26                                         __func__, status);
  27                         case -ENOENT:
  28                         case -ENOMEM:
  29 +                       case -EACCES:
  30 +                       case -EROFS:
  31 +                       case -EIO:
  32                         case -ESTALE:
  33                                 /* Open state on this file cannot be recovered */
  34                                 nfs4_state_mark_recovery_failed(state, status);