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Date: Sat, 18 Dec 2010 09:17:07 +0100
From: Andrea Arcangeli <aarcange@...hat.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Randy Dunlap <randy.dunlap@...cle.com>,
linux-kernel@...r.kernel.org, linux-mm@...ck.org,
linux-fsdevel@...r.kernel.org
Subject: Re: mmotm 2010-12-16-14-56 uploaded (hugetlb)
Hi everyone,
On Fri, Dec 17, 2010 at 04:58:34PM -0800, Andrew Morton wrote:
> The first one millionth:
>
> include/asm-generic/pgtable.h: In function 'ptep_get_and_clear':
> include/asm-generic/pgtable.h:77: error: expected statement before ')' token
> include/asm-generic/pgtable.h:94: error: invalid storage class for function 'pmdp_get_and_clear'
>
> Due to thp-add-pmd-mangling-generic-functions.patch
Here two fixes for the um build.
This is thp-add-pmd-mangling-generic-functions-fix.patch. I hope I'm
not asking for more build troubles down the road insisting on inline
and returning (pmd_t) { 0 } instead of converting it back to a
preprocessor macro.
========
Subject: thp: fix pgtable.h build for um
From: Andrea Arcangeli <aarcange@...hat.com>
make ARCH=um failed because of some typo error in newly written code to cleanup
asm-generic/pgtable.h but that was never compiled in on x86/x64 without um.
Signed-off-by: Andrea Arcangeli <aarcange@...hat.com>
---
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -74,7 +74,7 @@ static inline pte_t ptep_get_and_clear(s
pte_t pte = *ptep;
pte_clear(mm, address, ptep);
return pte;
-)
+}
#endif
#ifndef __HAVE_ARCH_PMDP_GET_AND_CLEAR
@@ -93,7 +93,7 @@ static inline pmd_t pmdp_get_and_clear(s
pmd_t *pmdp)
{
BUG();
- return 0;
+ return (pmd_t){ 0 };
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif
diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -29,7 +29,7 @@ int ptep_set_access_flags(struct vm_area
flush_tlb_page(vma, address);
}
return changed;
-})
+}
#endif
#ifndef __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS
This one is thp-pte-alloc-trans-splitting-fix.patch
======
Subject: thp: fix pte_alloc_map
From: Andrea Arcangeli <aarcange@...hat.com>
vma can be NULL safely for archs not implementing THP.
Signed-off-by: Andrea Arcangeli <aarcange@...hat.com>
---
diff --git a/arch/arm/mm/pgd.c b/arch/arm/mm/pgd.c
--- a/arch/arm/mm/pgd.c
+++ b/arch/arm/mm/pgd.c
@@ -52,7 +52,7 @@ pgd_t *get_pgd_slow(struct mm_struct *mm
if (!new_pmd)
goto no_pmd;
- new_pte = pte_alloc_map(mm, new_pmd, 0);
+ new_pte = pte_alloc_map(mm, NULL, new_pmd, 0);
if (!new_pte)
goto no_pte;
diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c
--- a/arch/ia64/mm/hugetlbpage.c
+++ b/arch/ia64/mm/hugetlbpage.c
@@ -38,7 +38,7 @@ huge_pte_alloc(struct mm_struct *mm, uns
if (pud) {
pmd = pmd_alloc(mm, pud, taddr);
if (pmd)
- pte = pte_alloc_map(mm, pmd, taddr);
+ pte = pte_alloc_map(mm, NULL, pmd, taddr);
}
return pte;
}
diff --git a/arch/sh/mm/hugetlbpage.c b/arch/sh/mm/hugetlbpage.c
--- a/arch/sh/mm/hugetlbpage.c
+++ b/arch/sh/mm/hugetlbpage.c
@@ -35,7 +35,7 @@ pte_t *huge_pte_alloc(struct mm_struct *
if (pud) {
pmd = pmd_alloc(mm, pud, addr);
if (pmd)
- pte = pte_alloc_map(mm, pmd, addr);
+ pte = pte_alloc_map(mm, NULL, pmd, addr);
}
}
diff --git a/arch/sparc/mm/generic_32.c b/arch/sparc/mm/generic_32.c
--- a/arch/sparc/mm/generic_32.c
+++ b/arch/sparc/mm/generic_32.c
@@ -50,7 +50,7 @@ static inline int io_remap_pmd_range(str
end = PGDIR_SIZE;
offset -= address;
do {
- pte_t * pte = pte_alloc_map(mm, pmd, address);
+ pte_t * pte = pte_alloc_map(mm, NULL, pmd, address);
if (!pte)
return -ENOMEM;
io_remap_pte_range(mm, pte, address, end - address, address + offset, prot, space);
diff --git a/arch/sparc/mm/generic_64.c b/arch/sparc/mm/generic_64.c
--- a/arch/sparc/mm/generic_64.c
+++ b/arch/sparc/mm/generic_64.c
@@ -92,7 +92,7 @@ static inline int io_remap_pmd_range(str
end = PGDIR_SIZE;
offset -= address;
do {
- pte_t * pte = pte_alloc_map(mm, pmd, address);
+ pte_t * pte = pte_alloc_map(mm, NULL, pmd, address);
if (!pte)
return -ENOMEM;
io_remap_pte_range(mm, pte, address, end - address, address + offset, prot, space);
diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c
--- a/arch/sparc/mm/hugetlbpage.c
+++ b/arch/sparc/mm/hugetlbpage.c
@@ -214,7 +214,7 @@ pte_t *huge_pte_alloc(struct mm_struct *
if (pud) {
pmd = pmd_alloc(mm, pud, addr);
if (pmd)
- pte = pte_alloc_map(mm, pmd, addr);
+ pte = pte_alloc_map(mm, NULL, pmd, addr);
}
return pte;
}
diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c
--- a/arch/um/kernel/skas/mmu.c
+++ b/arch/um/kernel/skas/mmu.c
@@ -31,7 +31,7 @@ static int init_stub_pte(struct mm_struc
if (!pmd)
goto out_pmd;
- pte = pte_alloc_map(mm, pmd, proc);
+ pte = pte_alloc_map(mm, NULL, pmd, proc);
if (!pte)
goto out_pte;
Let me know if there are further build troubles, thanks!
Andrea
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