The patch titled
Subject: mm/hmm: fix unused variable warning in hmm_vma_walk_pud
has been removed from the -mm tree. Its filename was
mm-hmm-allow-to-mirror-vma-of-a-file-on-a-dax-backed-filesystem-fix.patch
This patch was dropped because an updated version will be merged
------------------------------------------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
Subject: mm/hmm: fix unused variable warning in hmm_vma_walk_pud
Without CONFIG_HUGETLB_PAGE, the 'vma' variable is never referenced
on x86, so we get this warning:
mm/hmm.c: In function 'hmm_vma_walk_pud':
mm/hmm.c:764:25: error: unused variable 'vma' [-Werror=unused-variable]
Remove the local variable by open-coding walk-vma in the only
place it is used.
Link: http://lkml.kernel.org/r/20190306110109.2386057-1-arnd@xxxxxxxx
Fixes: 1bed8a07a556 ("mm/hmm: allow to mirror vma of a file on a DAX backed filesystem")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Reported-by: John Hubbard <jhubbard@xxxxxxxxxx>
Suggested-by: John Hubbard <jhubbard@xxxxxxxxxx>
Reviewed-by: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: Ralph Campbell <rcampbell@xxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Christian König <christian.koenig@xxxxxxx>
Cc: Felix Kuehling <Felix.Kuehling@xxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/hmm.c~mm-hmm-allow-to-mirror-vma-of-a-file-on-a-dax-backed-filesystem-fix
+++ a/mm/hmm.c
@@ -761,7 +761,6 @@ static int hmm_vma_walk_pud(pud_t *pudp,
{
struct hmm_vma_walk *hmm_vma_walk = walk->private;
struct hmm_range *range = hmm_vma_walk->range;
- struct vm_area_struct *vma = walk->vma;
unsigned long addr = start, next;
pmd_t *pmdp;
pud_t pud;
@@ -807,7 +806,7 @@ again:
return 0;
}
- split_huge_pud(vma, pudp, addr);
+ split_huge_pud(walk->vma, pudp, addr);
if (pud_none(*pudp))
goto again;
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
mm-hmm-allow-to-mirror-vma-of-a-file-on-a-dax-backed-filesystem-fix-2.patch
