From 07b645589dcda8b7a5249e096fece2a67556f0f4 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 28 Jul 2014 17:10:56 -0700 Subject: [PATCH] mnt: Move the test for MNT_LOCK_READONLY from change_mount_flags into do_remount There are no races as locked mount flags are guaranteed to never change. Moving the test into do_remount makes it more visible, and ensures all filesystem remounts pass the MNT_LOCK_READONLY permission check. This second case is not an issue today as filesystem remounts are guarded by capable(CAP_DAC_ADMIN) and thus will always fail in less privileged mount namespaces, but it could become an issue in the future. Cc: stable@vger.kernel.org Acked-by: Serge E. Hallyn Signed-off-by: "Eric W. Biederman" --- Reading git-format-patch failed