SUNRPC reverting 03d408abef3b ("NFSv4 fix CLOSE not waiting for direct IO compeletion")

SUNRPC reverting 03d408abef3b ("NFSv4 fix CLOSE not waiting for direct IO compeletion")

Reverting commit 03d408abef3b "NFSv4 fix CLOSE not waiting for
direct IO compeletion". This patch made it so that fput() by calling
inode_dio_done() in nfs_file_release() would wait uninterruptably
for any outstanding directIO to the file (but that wait on IO should
be killable).

The problem the patch was also trying to address was REMOVE returning
ERR_ACCESS because the file is still opened, is supposed to be resolved
by server returning ERR_FILE_OPEN and not ERR_ACCESS.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>