[PATCH 2/4] mount_setattr.2: update conditions to create ID-mapped mounts

[Christian Brauner <brauner@kernel.org>]

Newer kernels in principle support the creation of ID-mapped mounts for
filesystems mountable in non-initial user namespaces. Currently, no such
filesystem has been ported to support this though. But we should
nonetheless update the conditions.

Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
---
 man2/mount_setattr.2 | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/man2/mount_setattr.2 b/man2/mount_setattr.2
index 2bf1b24da..0999373d6 100644
--- a/man2/mount_setattr.2
+++ b/man2/mount_setattr.2
@@ -649,10 +649,11 @@ The following conditions must be met in order to create an ID-mapped mount:
 .IP \(bu 3
 The caller must have the
 .B CAP_SYS_ADMIN
-capability in the initial user namespace.
-.IP \(bu
-The filesystem must be mounted in a mount namespace
-that is owned by the initial user namespace.
+capability in the user namespace the filesystem was mounted in.
+.\" commit bd303368b776eead1c29e6cdda82bde7128b82a7
+.\" Christian Brauner
+.\"     Note, currently no filesystems mountable in non-initial user namespaces
+.\"     support ID-mapped mounts.
 .IP \(bu
 The underlying filesystem must support ID-mapped mounts.
 Currently, the
-- 
2.34.1