nfsd: ignore requests to disable unsupported versions

The kernel currently errors out if you attempt to enable or disable a
version that it doesn't recognize. Change it to ignore attempts to
disable an unrecognized version. If we don't support it, then there is
no harm in doing so.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Tom Talpey <tom@talpey.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Jeff Layton 2022-10-18 07:47:54 -04:00 committed by Chuck Lever
parent 841fd0a3cb
commit 8e823bafff

View File

@ -601,7 +601,9 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
}
break;
default:
return -EINVAL;
/* Ignore requests to disable non-existent versions */
if (cmd == NFSD_SET)
return -EINVAL;
}
vers += len + 1;
} while ((len = qword_get(&mesg, vers, size)) > 0);