Re: [PATCH v8 0/9] Overlayfs: constant st_ino/d_ino for non-samefs

[Vivek Goyal <vgoyal@redhat.com>]

Hi Miklos,

These patches apply on top of which tree/branch. I am trying linus's
latest tree and these fail to apply.

Vivek

On Tue, Nov 07, 2017 at 06:58:00PM +0200, Amir Goldstein wrote:
> Miklos,
> 
> This version provides a solution for some interesting non-samefs cases:
> - All the ext* family
> - Many other fs with default encode_fh
> - xfs that is not huge with overlay 'xino' mount option
> - tmpfs that is not on a machine with jurassic uptime with 'xino'
> 
> I tested this with Chandan's upstream overlay/041 xfstest for
> consistent d_ino in non-samefs setup. Results are:
> - Test passes for ext4
> - Test fails for xfs
> - Test fails for xfs with OVERLAY_MOUNT_OPTIONS=-oxino,
>   but this is because of a test bug
> - With the test bug fix available at [2] test passes
>   with xfs and OVERLAY_MOUNT_OPTIONS=-oxino
> 
> All the exportfs tests also pass with these changes and
> either ext4 or xfs with OVERLAY_MOUNT_OPTIONS=-oxino.
> 
> Changes since v7:
> - Drop patches for building impure cache for non-samefs subdirs
> - Dropped patch "update cache version of impure parent on rename"
>   because it is not relevant to this series
> - Remap lower inode numbers for 32bit inode file systems
> - Add mount option 'xino' for opting-in to use high inode bits
> 
> Thanks,
> Amir.
> 
> [1] https://github.com/amir73il/linux/commits/ovl-nonsamefs-v8
> [2] https://github.com/amir73il/xfstests/commits/overlayfs-devel
> 
> Amir Goldstein (8):
>   ovl: move include of ovl_entry.h into overlayfs.h
>   ovl: allocate anonymous devs for lowerdirs
>   ovl: factor out ovl_map_dev_ino() helper
>   ovl: return anonymous st_dev for lower inodes
>   ovl: relax same fs constraint for constant st_ino
>   ovl: constant st_ino for non-samefs with xino
>   ovl: consistent d_ino for non-samefs with xino
>   ovl: add support for 'xino' mount option
> 
> Chandan Rajendra (1):
>   ovl: re-structure overlay lower layers in-memory
> 
>  fs/overlayfs/copy_up.c   |   1 -
>  fs/overlayfs/inode.c     |  91 +++++++++++++++++++++++++--------
>  fs/overlayfs/namei.c     |  42 +++++++--------
>  fs/overlayfs/overlayfs.h |   9 ++--
>  fs/overlayfs/ovl_entry.h |  19 ++++++-
>  fs/overlayfs/readdir.c   |  49 +++++++++++++++---
>  fs/overlayfs/super.c     | 129 +++++++++++++++++++++++++++++++++--------------
>  fs/overlayfs/util.c      |  39 ++++++++++++--
>  8 files changed, 277 insertions(+), 102 deletions(-)
> 
> -- 
> 2.7.4