The patch titled
Subject: mm: use page->deferred_list
has been added to the -mm tree. Its filename is
mm-use-page-deferred_list.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-use-page-deferred_list.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-use-page-deferred_list.patch
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------------------------------------------------------
From: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
Subject: mm: use page->deferred_list
Now that we can represent the location of 'deferred_list' in C instead of
comments, make use of that ability.
Link: http://lkml.kernel.org/r/20180518194519.3820-9-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: Lai Jiangshan <jiangshanlai@xxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 7 ++-----
mm/page_alloc.c | 2 +-
2 files changed, 3 insertions(+), 6 deletions(-)
diff -puN mm/huge_memory.c~mm-use-page-deferred_list mm/huge_memory.c
--- a/mm/huge_memory.c~mm-use-page-deferred_list
+++ a/mm/huge_memory.c
@@ -483,11 +483,8 @@ pmd_t maybe_pmd_mkwrite(pmd_t pmd, struc
static inline struct list_head *page_deferred_list(struct page *page)
{
- /*
- * ->lru in the tail pages is occupied by compound_head.
- * Let's use ->mapping + ->index in the second tail page as list_head.
- */
- return (struct list_head *)&page[2].mapping;
+ /* ->lru in the tail pages is occupied by compound_head. */
+ return &page[2].deferred_list;
}
void prep_transhuge_page(struct page *page)
diff -puN mm/page_alloc.c~mm-use-page-deferred_list mm/page_alloc.c
--- a/mm/page_alloc.c~mm-use-page-deferred_list
+++ a/mm/page_alloc.c
@@ -952,7 +952,7 @@ static int free_tail_pages_check(struct
case 2:
/*
* the second tail page: ->mapping is
- * page_deferred_list().next -- ignore value.
+ * deferred_list.next -- ignore value.
*/
break;
default:
_
Patches currently in -mm which might be from mawilcox@xxxxxxxxxxxxx are
lib-test_bitmapc-fix-bitmap-optimisation-tests-to-report-errors-correctly.patch
slab-__gfp_zero-is-incompatible-with-a-constructor.patch
s390-use-_refcount-for-pgtables.patch
mm-split-page_type-out-from-_mapcount.patch
mm-mark-pages-in-use-for-page-tables.patch
mm-switch-s_mem-and-slab_cache-in-struct-page.patch
mm-move-private-union-within-struct-page.patch
mm-move-_refcount-out-of-struct-page-union.patch
mm-combine-first-three-unions-in-struct-page.patch
mm-use-page-deferred_list.patch
mm-move-lru-union-within-struct-page.patch
mm-combine-lru-and-main-union-in-struct-page.patch
mm-improve-struct-page-documentation.patch
mm-add-pt_mm-to-struct-page.patch
mm-add-hmm_data-to-struct-page.patch
slabslub-remove-rcu_head-size-checks.patch
slub-remove-kmem_cache-reserved.patch
slub-remove-reserved-file-from-sysfs.patch
mm-distinguish-vmalloc-pages.patch
ida-remove-simple_ida_lock.patch
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