Jan, I was working on adding support for FAN_MARK_MNTNS inside user ns and ran into this bug. Unfortunately, this is Easter weekend and on Sunday I am going for two weeks vacation, so I won't be able to handle review comments on these patches until at least rc5. If you are ok with the bug fix, you may fast track it and if the test needs fixing, I can do that when I get back, or feel free to fix it as you see fit. Thanks, Amir. Amir Goldstein (2): fanotify: fix flush of mntns marks selftests/fs/mount-notify: test also remove/flush of mntns marks fs/notify/fanotify/fanotify_user.c | 7 +-- include/linux/fsnotify_backend.h | 15 ----- .../mount-notify/mount-notify_test.c | 57 +++++++++++++++---- 3 files changed, 47 insertions(+), 32 deletions(-) -- 2.34.1