On Thu, Mar 29, 2018 at 5:18 PM, Amir Goldstein <amir73il@xxxxxxxxx> wrote: > Miklos, > > This series provides a solution for some interesting non-samefs cases: > - All the ext* family > - Many other fs with default encode_fh > - xfs and tmpfs with overlay "xino" mount option > > The patches are also available on my ovl-xino branch [2]. They are based > on some earlier fix patches and they do not conflict with the NFS export > optimization patches (ovl-nfs-export branch). > > I tested this with upstream overlay/nonsamefs xfstest group: > - Tests pass for ext4 > - Tests fail for xfs > - Tests pass for xfs with OVERLAY_MOUNT_OPTIONS=-oxino > > I also added --xino option to unionmount-testsuite [2], along with > the --verify option, the test verifies constant st_ino and that all > objects are on overlay st_dev. > > Changes since v8: > - Use unique fsid instead of layer id > - Assign pseudo_dev per fsid instead of per layer > - Limit "xino" feature to 64bit systems > - Assign xino value i_ino as well for NFSv3 readdir > - Add "xino" documentation patch And: - Instead of -EOVERFLOW on stat(2) fallback to non-xino behavior > > Thanks, > Amir. > > [1] https://github.com/amir73il/linux/commits/ovl-xino > [2] https://github.com/amir73il/unionmount-testsuite/commits/overlayfs-devel > > Amir Goldstein (7): > ovl: factor out ovl_map_dev_ino() helper > ovl: allocate anon bdev per unique lower fs > ovl: constant st_ino for non-samefs with xino > ovl: consistent i_ino for non-samefs with xino > ovl: consistent d_ino for non-samefs with xino > ovl: add support for "xino" mount option > ovl: update documentation w.r.t "xino" feature > > Documentation/filesystems/overlayfs.txt | 39 +++++++-- > fs/overlayfs/export.c | 2 +- > fs/overlayfs/inode.c | 140 +++++++++++++++++++++----------- > fs/overlayfs/namei.c | 4 +- > fs/overlayfs/overlayfs.h | 6 +- > fs/overlayfs/ovl_entry.h | 21 +++-- > fs/overlayfs/readdir.c | 45 ++++++++-- > fs/overlayfs/super.c | 120 ++++++++++++++++++++++----- > fs/overlayfs/util.c | 38 ++++++++- > 9 files changed, 318 insertions(+), 97 deletions(-) > > -- > 2.7.4 > -- To unsubscribe from this list: send the line "unsubscribe linux-unionfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
