[ Upstream commit 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 ]
We shouldn't really be using a read-only file descriptor to take a write
lock.
Most filesystems will put up with it. But NFS, for example, won't.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 2dc6f19e4f438d4c14987cb17aee38aaf7304e7f ]
It'll come in handy to get the whole nlm_lock.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>