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This is still needed to avoid that a real-time parent seems minor faults after forking for shared pages until they are finally unshared. This missing support became visible in Xenomai when running the complete smokey test suite on certain architectures/config combinations. Fixes: 0f0b6099c45f ("ipipe: mm: Drop un-COW from copy_pte_range") Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Greg Gallagher <greg@embeddedgreg.com>
0a34d1b1