Revert "NFSv4: Remove incorrect check in can_open_delegated()"
Revert "NFSv4: Remove incorrect check in can_open_delegated()"

This reverts commit 4e379d36c050b0117b5d10048be63a44f5036115.

This commit opens up a race between the recovery code and the open code.

Reported-by: Olga Kornievskaia <2dacee6e8011ef87c93b5fd44ca8048c9e2f4b45@umich.edu>
Cc: 4fbacc2fa0ffdbb11bf1ad6925b886ebd08dd15f@vger.kernel # v4.0+
Signed-off-by: Trond Myklebust <cc958843532c615cbd4920e868f78c7985331a5a@primarydata.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs