fs/nfs: Fix nfs_parse_devname to not modify it's argument
BugLink: https://bugs.launchpad.net/bugs/1864773 [ Upstream commit 40cc394b ] In the rare and unsupported case of a hostname list nfs_parse_devname will modify dev_name. There is no need to modify dev_name as the all that is being computed is the length of the hostname, so the computed length can just be shorted. Fixes: dc045898 ("NFS: Use common device name parsing logic for NFSv4 and NFSv2/v3") Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com> Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
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