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* [PATCH v3 00/14] Rearrange struct page
@ 2018-04-18 18:48 Matthew Wilcox
  2018-04-18 18:48 ` [PATCH v3 01/14] s390: Use _refcount for pgtables Matthew Wilcox
                   ` (13 more replies)
  0 siblings, 14 replies; 43+ messages in thread
From: Matthew Wilcox @ 2018-04-18 18:48 UTC (permalink / raw)
  To: linux-mm
  Cc: Matthew Wilcox, Andrew Morton, Kirill A . Shutemov,
	Christoph Lameter, Lai Jiangshan, Pekka Enberg, Vlastimil Babka

From: Matthew Wilcox <mawilcox@microsoft.com>

This is actually the combination of two previously posted series.
Since they both deal with rearranging struct page and the second series
depends on the first, I thought it best to combine them.

The overall motivation is to make it easier for people to use the space
in struct page if they've allocated it for their own purposes.  By the
end of the series, we end up with five consecutive words which can be
used almost arbitrarily by the owner.

Highlights:
 - slub's counters no longer share space with _refcount.
 - slub's freelist+counters are now naturally dword aligned.
 - It's now more obvious what fields in struct page are used by which
   owners (some owners still take advantage of the union aliasing).
 - deferred_list now really exists in struct page instead of just a
   comment.
 - slub loses a parameter to a lot of functions.

Matthew Wilcox (14):
  s390: Use _refcount for pgtables
  mm: Split page_type out from _mapcount
  mm: Mark pages in use for page tables
  mm: Switch s_mem and slab_cache in struct page
  mm: Move 'private' union within struct page
  mm: Move _refcount out of struct page union
  slub: Remove page->counters
  mm: Combine first three unions in struct page
  mm: Use page->deferred_list
  mm: Move lru union within struct page
  mm: Combine first two unions in struct page
  mm: Improve struct page documentation
  slab,slub: Remove rcu_head size checks
  slub: Remove kmem_slab_cache->reserved

 arch/s390/mm/pgalloc.c                 |  21 +--
 fs/proc/page.c                         |   2 +
 include/linux/mm.h                     |   2 +
 include/linux/mm_types.h               | 216 +++++++++++--------------
 include/linux/page-flags.h             |  51 +++---
 include/linux/slub_def.h               |   1 -
 include/uapi/linux/kernel-page-flags.h |   2 +-
 kernel/crash_core.c                    |   1 +
 mm/huge_memory.c                       |   7 +-
 mm/page_alloc.c                        |  17 +-
 mm/slab.c                              |   2 -
 mm/slub.c                              | 137 +++++++---------
 scripts/tags.sh                        |   6 +-
 tools/vm/page-types.c                  |   1 +
 14 files changed, 215 insertions(+), 251 deletions(-)

-- 
2.17.0

^ permalink raw reply	[flat|nested] 43+ messages in thread

end of thread, other threads:[~2018-04-30 13:12 UTC | newest]

Thread overview: 43+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
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 ` [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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