[PATCH 0/2] btrfs-progs: mkfs: --rootdir related fixes

[Qu Wenruo <wqu@suse.com>]

I don't know if it's recent kernel tmpfs change or something else, but
I'm consistently get ino number smaller than 256 from my /tmp directory.

This behavior change exposed a new problem in mkfs.btrfs --rootdir, that
if some ino number (in the source directory, not in btrfs) is smaller
than 256, it can screw up the backref code.

As backref code is utilizing @owner to determine if a backref is data or
metadata.

And inode number smaller than 256 will make backref code to treat a data
backref as tree backref, and cause corruption.

Thankfully this should not happen that easily, only when --rootdir
points to a newly created fs.

Qu Wenruo (2):
  btrfs-progs: properly initialized extent generation for
    __btrfs_record_file_extent()
  btrfs-progs: avoid fs corruption if rootdir contains ino smaller than
    BTRFS_FIRST_FREE_OBJECTID

 kernel-shared/extent-tree.c | 8 +++++++-
 mkfs/rootdir.c              | 8 +++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

-- 
2.37.3