Re: [PATCH v15 10/30] ovl: Modify ovl_lookup() and friends to lookup metacopy dentry

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On Thu, May 10, 2018 at 10:13 PM, Miklos Szeredi <miklos@xxxxxxxxxx> wrote:

>  - if upper has REDIRECT, then use that to determine origin (just like
> directories)
>  - else if upper has METACOPY, then go down one level to determine
> origin (just like directories)
>  - else if upper has ORIGIN, then use that as origin (not applicable
> to directories (*))
>  - else no origin (just like directories)

Desirable way to find origin summarized in a table:

lookup by   dir            reg       special
--------------------------------------------
redirect    REDIRECT       REDIRECT  n/a
next layer  default        METACOPY  n/a
origin fh   OPAQUE+ORIGIN  ORIGIN    ORIGIN
stop        OPAQUE         default   default

Thanks,
Miklos
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