Re: [PATCH] erofs: use the opener's credential when verifing metadata accesses

>  - using the opener credentials when accessing the backing file seems
>    wrong.  The entity accessing it is the file system, so it should
>    have system or mounter credentials, not that of someone causing
>    metadata / fs data access.  And this applies to all access by
>    a file system backed by a backing file.

I think there's probably some confusion of terminology here. buf->file
is opened with the mounter's credentials, so we are impersonating the
mounter here. Perhaps the commit message could describe that more
clearly. Same for the previous patches mentioned.

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