NFSD: fix dest to src mount in inter-server COPY
commit 614c9750 upstream. A cleanup of the inter SSC copy needs to call fput() of the source file handle to make sure that file structure is freed as well as drop the reference on the superblock to unmount the source server. Fixes: 36e1e5ba ("NFSD: Fix use-after-free warning when doing inter-server copy") Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Tested-by: Dai Ngo <dai.ngo@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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