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SubjectRe: linux-next: build failure after merge of the akpm-current tree
On Wed, 10 Jun 2020 13:44:25 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:

> Hi all,
>
> On Tue, 9 Jun 2020 22:42:52 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
> >
> > After merging the akpm-current tree, today's linux-next build (sparc
> > defconfig) failed like this:
> >
> > In file included from include/linux/mm.h:32:0,
> > from include/linux/memblock.h:13,
> > from arch/sparc/mm/srmmu.c:14:
> > include/linux/pgtable.h:74:27: error: redefinition of 'pte_offset_kernel'
> > #define pte_offset_kernel pte_offset_kernel
> > ^
> > arch/sparc/mm/srmmu.c:144:8: note: in expansion of macro 'pte_offset_kernel'
> > pte_t *pte_offset_kernel(pmd_t *dir, unsigned long address)
> > ^~~~~~~~~~~~~~~~~
> > include/linux/pgtable.h:70:22: note: previous definition of 'pte_offset_kernel' was here
> > static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long address)
> > ^~~~~~~~~~~~~~~~~
> >
> > Caused by commit
> >
> > 292aa65ed13a ("mm: consolidate pte_index() and pte_offset_*() definitions")
>
> This breakage is now in Linus' tree :-(

I've sent this in as well:

From: Andrew Morton <akpm@linux-foundation.org>
Subject: arch/sparc/mm/srmmu.c: fix build

"mm: consolidate pte_index() and pte_offset_*() definitions" was supposed
to remove arch/sparc/mm/srmmu.c:pte_offset_kernel().

Fixes: 974b9b2c68f3d35 ("mm: consolidate pte_index() and pte_offset_*() definitions")
Reported-by: kernel test robot <lkp@intel.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

arch/sparc/mm/srmmu.c | 10 ----------
1 file changed, 10 deletions(-)

--- a/arch/sparc/mm/srmmu.c~arch-sparc-mm-srmmuc-fix-build
+++ a/arch/sparc/mm/srmmu.c
@@ -140,16 +140,6 @@ void pmd_set(pmd_t *pmdp, pte_t *ptep)
set_pte((pte_t *)&pmd_val(*pmdp), __pte(SRMMU_ET_PTD | ptp));
}

-/* Find an entry in the third-level page table.. */
-pte_t *pte_offset_kernel(pmd_t *dir, unsigned long address)
-{
- void *pte;
-
- pte = __nocache_va((pmd_val(*dir) & SRMMU_PTD_PMASK) << 4);
- return (pte_t *) pte +
- ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1));
-}
-
/*
* size: bytes to allocate in the nocache area.
* align: bytes, number to align at.
_
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