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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2015-02-28 00:52:12 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-28 18:57:51 +0100 |
| commit | c07af4f1ce413d009ea76ee69099f06f73ce75b2 (patch) | |
| tree | 7f907957d8499acb11b4f8d861519588048ee84e /arch/m68k/include/asm/pgtable_mm.h | |
| parent | mm: page_alloc: revert inadvertent !__GFP_FS retry behavior change (diff) | |
| download | linux-c07af4f1ce413d009ea76ee69099f06f73ce75b2.tar.xz linux-c07af4f1ce413d009ea76ee69099f06f73ce75b2.zip | |
mm: add missing __PAGETABLE_{PUD,PMD}_FOLDED defines
Core mm expects __PAGETABLE_{PUD,PMD}_FOLDED to be defined if these page
table levels folded. Usually, these defines are provided by
<asm-generic/pgtable-nopmd.h> and <asm-generic/pgtable-nopud.h>.
But some architectures fold page table levels in a custom way. They
need to define these macros themself. This patch adds missing defines.
The patch fixes mm->nr_pmds underflow and eliminates dead __pmd_alloc()
and __pud_alloc() on architectures without these page table levels.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/m68k/include/asm/pgtable_mm.h')
| -rw-r--r-- | arch/m68k/include/asm/pgtable_mm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/pgtable_mm.h b/arch/m68k/include/asm/pgtable_mm.h index 28a145bfbb71..35ed4a9981ae 100644 --- a/arch/m68k/include/asm/pgtable_mm.h +++ b/arch/m68k/include/asm/pgtable_mm.h @@ -54,10 +54,12 @@ */ #ifdef CONFIG_SUN3 #define PTRS_PER_PTE 16 +#define __PAGETABLE_PMD_FOLDED #define PTRS_PER_PMD 1 #define PTRS_PER_PGD 2048 #elif defined(CONFIG_COLDFIRE) #define PTRS_PER_PTE 512 +#define __PAGETABLE_PMD_FOLDED #define PTRS_PER_PMD 1 #define PTRS_PER_PGD 1024 #else |