Applying with these fixes on my side:
- added Fixes: 3681ad22775c ("xfs: Teach the fs where the balloon
  inode is")
- "Every statfs and every open of the balloon" -> "Every mount,
  remount, statfs and open of the balloon"

On Wed, 11 Nov 2026 12:31:33 +0100, Denis V. Lunev wrote:
> releasing the reference it took. Every statfs and every open of the
> balloon then leaks a reference on such an inode, which the VFS reports
> as a busy inode at unmount.

xfs_balloon_check() calls xfs_balloon_get() at mount and remount too,
and a balloon_ino= naming a directory is the most likely way to get
there.

-- 
Konstantin Khorenko,
Virtuozzo Linux Kernel Team

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