[075/166] mm: prevent a warning when casting void* -> enum
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Message ID 20200407030800.mhJqunPQQ%akpm@linux-foundation.org
State New
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Series
  • [001/166] mm, memcg: bypass high reclaim iteration for cgroup hierarchy root
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Commit Message

Andrew Morton April 7, 2020, 3:08 a.m. UTC
From: Palmer Dabbelt <palmerdabbelt@google.com>
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@dabbelt.com
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/rmap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch
diff mbox series

--- 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))