x86: kvm: propagate register_shrinker return code
Patch "mm,vmscan: mark register_shrinker() as __must_check" is queued for 4.16 in linux-mm and adds a warning about the unchecked call to register_shrinker: arch/x86/kvm/mmu.c:5485:2: warning: ignoring return value of 'register_shrinker', declared with attribute warn_unused_result [-Wunused-result] This changes the kvm_mmu_module_init() function to fail itself when the call to register_shrinker fails. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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