nfsd: lock_rename() needs both directories to live on the same fs
JIRA: https://issues.redhat.com/browse/RHEL-14840
commit 1aee9158bc978f91701c5992e395efbc6da2de3c
Author: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat Oct 14 21:34:40 2023 -0400
nfsd: lock_rename() needs both directories to live on the same fs
... checking that after lock_rename() is too late. Incidentally,
NFSv2 had no nfserr_xdev...
Fixes: aa387d6ce153 "nfsd: fix EXDEV checking in rename"
Cc: stable@vger.kernel.org # v3.9+
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeffrey Layton jlayton@redhat.com
Edited by Jeffrey Layton