diff options
| author |   Matthew Wilcox <mawilcox@microsoft.com> | 2018-06-07 17:08:57 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-07 17:34:37 -0700 |
| commit | a052f0a5168ef99c517f6638aaec59f39060f81d (patch) | |
| tree | 9fd7579eafc6cf0f74ae16f25f5300afaed8be55 /include/linux/mm_types.h | |
| parent | mm: improve struct page documentation (diff) | |
| download | linux-dev-a052f0a5168ef99c517f6638aaec59f39060f81d.tar.xz linux-dev-a052f0a5168ef99c517f6638aaec59f39060f81d.zip | |
mm: add pt_mm to struct page
For pgd page table pages, x86 overloads the page->index field to store a
pointer to the mm_struct. Rename this to pt_mm so it's visible to other
users.
Link: http://lkml.kernel.org/r/20180518194519.3820-13-willy@infradead.org
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Christoph Lameter <cl@linux.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | include/linux/mm_types.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 9b45760cc797..811aa0c71e1a 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -139,7 +139,7 @@ struct page { unsigned long _pt_pad_1; /* compound_head */ pgtable_t pmd_huge_pte; /* protected by page->ptl */ unsigned long _pt_pad_2; /* mapping */ - unsigned long _pt_pad_3; + struct mm_struct *pt_mm; /* x86 pgds only */ #if ALLOC_SPLIT_PTLOCKS spinlock_t *ptl; #else |