From: Matthew Wilcox <willy@infradead.org>
To: linux-mm@kvack.org
Cc: Matthew Wilcox <mawilcox@microsoft.com>,
Andrew Morton <akpm@linux-foundation.org>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Christoph Lameter <cl@linux.com>,
Lai Jiangshan <laijs@cn.fujitsu.com>,
Pekka Enberg <penberg@kernel.org>,
Vlastimil Babka <vbabka@suse.cz>
Subject: [PATCH v3 09/14] mm: Use page->deferred_list
Date: Wed, 18 Apr 2018 11:49:07 -0700 [thread overview]
Message-ID: <20180418184912.2851-10-willy@infradead.org> (raw)
In-Reply-To: <20180418184912.2851-1-willy@infradead.org>
From: Matthew Wilcox <mawilcox@microsoft.com>
Now that we can represent the location of 'deferred_list' in C instead
of comments, make use of that ability.
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
---
mm/huge_memory.c | 7 ++-----
mm/page_alloc.c | 2 +-
2 files changed, 3 insertions(+), 6 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 14ed6ee5e02f..55ad852fbf17 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -483,11 +483,8 @@ pmd_t maybe_pmd_mkwrite(pmd_t pmd, struct vm_area_struct *vma)
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 --git a/mm/page_alloc.c b/mm/page_alloc.c
index 88e817d7ccef..18720eccbce1 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -953,7 +953,7 @@ static int free_tail_pages_check(struct page *head_page, struct page *page)
case 2:
/*
* the second tail page: ->mapping is
- * page_deferred_list().next -- ignore value.
+ * deferred_list.next -- ignore value.
*/
break;
default:
--
2.17.0
next prev parent reply other threads:[~2018-04-18 18:49 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-18 18:48 [PATCH v3 00/14] Rearrange struct page Matthew Wilcox
2018-04-18 18:48 ` [PATCH v3 01/14] s390: Use _refcount for pgtables Matthew Wilcox
2018-04-18 18:49 ` [PATCH v3 02/14] mm: Split page_type out from _mapcount Matthew Wilcox
2018-04-19 9:04 ` Vlastimil Babka
2018-04-19 11:16 ` Matthew Wilcox
2018-04-20 15:17 ` Christopher Lameter
2018-04-20 20:43 ` Matthew Wilcox
2018-04-18 18:49 ` [PATCH v3 03/14] mm: Mark pages in use for page tables Matthew Wilcox
2018-04-19 9:30 ` Vlastimil Babka
2018-04-18 18:49 ` [PATCH v3 04/14] mm: Switch s_mem and slab_cache in struct page Matthew Wilcox
2018-04-19 11:06 ` Vlastimil Babka
2018-04-19 11:19 ` Matthew Wilcox
2018-04-18 18:49 ` [PATCH v3 05/14] mm: Move 'private' union within " Matthew Wilcox
2018-04-19 11:31 ` Vlastimil Babka
2018-04-20 15:25 ` Christopher Lameter
2018-04-20 20:27 ` Matthew Wilcox
2018-04-30 9:38 ` Kirill A. Shutemov
2018-04-18 18:49 ` [PATCH v3 06/14] mm: Move _refcount out of struct page union Matthew Wilcox
2018-04-19 11:37 ` Vlastimil Babka
2018-04-30 9:40 ` Kirill A. Shutemov
2018-04-18 18:49 ` [PATCH v3 07/14] slub: Remove page->counters Matthew Wilcox
2018-04-19 13:42 ` Vlastimil Babka
2018-04-19 14:23 ` Matthew Wilcox
2018-04-18 18:49 ` [PATCH v3 08/14] mm: Combine first three unions in struct page Matthew Wilcox
2018-04-19 13:46 ` Vlastimil Babka
2018-04-19 14:08 ` Matthew Wilcox
2018-04-30 9:42 ` Kirill A. Shutemov
2018-04-18 18:49 ` Matthew Wilcox [this message]
2018-04-19 13:23 ` [PATCH v3 09/14] mm: Use page->deferred_list Vlastimil Babka
2018-04-30 9:43 ` Kirill A. Shutemov
2018-04-18 18:49 ` [PATCH v3 10/14] mm: Move lru union within struct page Matthew Wilcox
2018-04-19 13:56 ` Vlastimil Babka
2018-04-30 9:44 ` Kirill A. Shutemov
2018-04-18 18:49 ` [PATCH v3 11/14] mm: Combine first two unions in " Matthew Wilcox
2018-04-19 14:03 ` Vlastimil Babka
2018-04-30 9:47 ` Kirill A. Shutemov
2018-04-30 12:42 ` Matthew Wilcox
2018-04-30 13:12 ` Kirill A. Shutemov
2018-04-18 18:49 ` [PATCH v3 12/14] mm: Improve struct page documentation Matthew Wilcox
2018-04-18 23:32 ` Randy Dunlap
2018-04-18 23:43 ` Matthew Wilcox
2018-04-18 18:49 ` [PATCH v3 13/14] slab,slub: Remove rcu_head size checks Matthew Wilcox
2018-04-18 18:49 ` [PATCH v3 14/14] slub: Remove kmem_cache->reserved Matthew Wilcox
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