From: Palmer Dabbelt <palmerdabbelt@xxxxxxxxxx> Subject: mm: prevent a warning when casting void* -> enum I recently build the RISC-V port with LLVM trunk, which has introduced a new warning when casting from a pointer to an enum of a smaller size. This patch simply casts to a long in the middle to stop the warning. I'd be surprised this is the only one in the kernel, but it's the only one I saw. Link: http://lkml.kernel.org/r/20200227211741.83165-1-palmer@xxxxxxxxxxx Signed-off-by: Palmer Dabbelt <palmerdabbelt@xxxxxxxxxx> Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/rmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/rmap.c~mm-elide-a-warning-when-casting-void-enum +++ a/mm/rmap.c @@ -1372,7 +1372,7 @@ static bool try_to_unmap_one(struct page struct page *subpage; bool ret = true; struct mmu_notifier_range range; - enum ttu_flags flags = (enum ttu_flags)arg; + enum ttu_flags flags = (enum ttu_flags)(long)arg; /* munlock has nothing to gain from examining un-locked vmas */ if ((flags & TTU_MUNLOCK) && !(vma->vm_flags & VM_LOCKED)) _
