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Subject[PATCH 0/6 RESEND] statfs: handle mount propagation

This is a resend of this to CC more people and because it seems to have
gotten lost in the prior merge window. I should've sent it afterwards
right away.

This series:
- unifies the definition of constants in statfs.h and fs.h
Please note the comments by Greg and others on this part:
I haven't yet changed the fs.h and statfs.h header changes to not
bitshifts. I wanted to wait what Al would think of it.
- extends statfs to handle mount propagation. This will let userspace
easily query a given mountpoint for MS_UNBINDABLE, MS_SHARED,
MS_PRIVATE and MS_SLAVE without always having to do costly parsing of
To this end the flags:
are added. They have the same value as their MS_* counterparts.

The patchset was made against Al's vfs/for-next tree.


Christian Brauner (6):
fs: use << for MS_* flags
statfs: use << to align with fs header
statfs: add ST_UNBINDABLE
statfs: add ST_SHARED
statfs: add ST_PRIVATE
statfs: add ST_SLAVE

fs/statfs.c | 16 +++++++++++++++-
include/linux/statfs.h | 30 +++++++++++++++++-------------
include/uapi/linux/fs.h | 33 +++++++++++++++++----------------
3 files changed, 49 insertions(+), 30 deletions(-)


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