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From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-mm@kvack.org, 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: Re: [PATCH v3 08/14] mm: Combine first three unions in struct page
Date: Mon, 30 Apr 2018 12:42:34 +0300	[thread overview]
Message-ID: <20180430094233.teyujjxupgt6d246@kshutemo-mobl1> (raw)
In-Reply-To: <20180418184912.2851-9-willy@infradead.org>

On Wed, Apr 18, 2018 at 11:49:06AM -0700, Matthew Wilcox wrote:
> From: Matthew Wilcox <mawilcox@microsoft.com>
> 
> By combining these three one-word unions into one three-word union,
> we make it easier for users to add their own multi-word fields to struct
> page, as well as making it obvious that SLUB needs to keep its double-word
> alignment for its freelist & counters.
> 
> No field moves position; verified with pahole.
> 
> Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>

Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>

-- 
 Kirill A. Shutemov

  parent reply	other threads:[~2018-04-30 10:04 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 [this message]
2018-04-18 18:49 ` [PATCH v3 09/14] mm: Use page->deferred_list Matthew Wilcox
2018-04-19 13:23   ` 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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