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| H A D | namei.c | ffb24e3c Tue Apr 27 05:28:26 CDT 2021 Amir Goldstein <amir73il@gmail.com> ovl: relax lookup error on mismatch origin ftype
We get occasional reports of lookup errors due to mismatched
origin ftype from users that re-format a lower squashfs image.
Commit 13c6ad0f45fd ("ovl: document lower modification caveats")
tries to discourage the practice of re-formating lower layers and
describes the expected behavior as undefined.
Commit b0e0f69731cd ("ovl: restrict lower null uuid for "xino=auto"")
limits the configurations in which origin file handles are followed.
In addition to these measures, change the behavior in case of detecting
a mismatch origin ftype in lookup to issue a warning, not follow origin,
but not fail the lookup operation either.
That should make overall more users happy without any big consequences.
Link: https://lore.kernel.org/linux-unionfs/CAOQ4uxgPq9E9xxwU2CDyHy-_yCZZeymg+3n+-6AqkGGE1YtwvQ@mail.gmail.com/
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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