Robin Dong:
> There are two ways to fix this problem.
> First, traverse all alias of inode to find a non-zero-d_count dentry,
> this may be inefficient
> Second, create a new overlayfs inode and a new overlayfs dentry in
> ovl_link, that will make the result of two actions
> ("create link" then "mount", or "mount" then "create link") consistent.
How about third one (as for the original "two inodes" problem)?
- create a table to convert the uppderdir (real) inode number into the
overlayfs (virtual) inode number.
- using the table, you can get the virtual inum from the real inum.
- as long as you have a single real inum (for hardlinks), you will get a
single virtual inum.
J. R. Okajima
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