linux.git/include/linux/page-flags.h, branch v6.10-rc2

mm: remove PageReferenced

2024-05-06T00:53:50+00:00

All callers now use folio_*_referenced() so we can remove the
PageReferenced family of functions.

Link: https://lkml.kernel.org/r/20240424191914.361554-8-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) 
Signed-off-by: Andrew Morton

mm/page-flags: make PageUptodate return bool

2024-05-06T00:53:43+00:00

Make PageUptodate return bool to align the return values of
folio_test_uptodate function

Link: https://lkml.kernel.org/r/20240422032725.41452-1-gehao@kylinos.cn
Signed-off-by: Hao Ge 
Cc: David Hildenbrand 
Cc: Josef Bacik 
Cc: Matthew Wilcox (Oracle) 
Cc: Ruihan Li 
Cc: Vishal Moola (Oracle) 
Signed-off-by: Andrew Morton

mm: generate PAGE_IDLE_FLAG definitions

2024-04-26T03:56:35+00:00

If CONFIG_PAGE_IDLE_FLAG is not set, we can use FOLIO_FLAG_FALSE() to
generate these definitions.

Link: https://lkml.kernel.org/r/20240402201252.917342-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) 
Reviewed-by: David Hildenbrand 
Signed-off-by: Andrew Morton

mm: allow anon exclusive check over hugetlb tail pages

2024-04-26T03:56:23+00:00

PageAnonExclusive() used to forbid tail pages for hugetlbfs, as that used
to be called mostly in hugetlb specific paths and the head page was
guaranteed.

As we move forward towards merging hugetlb paths into generic mm, we may
start to pass in tail hugetlb pages (when with cont-pte/cont-pmd huge
pages) for such check.  Allow it to properly fetch the head, in which case
the anon-exclusiveness of the head will always represents the tail page.

There's already a sign of it when we look at the GUP-fast which already
contain the hugetlb processing altogether: we used to have a specific
commit 5805192c7b72 ("mm/gup: handle cont-PTE hugetlb pages correctly in
gup_must_unshare() via GUP-fast") covering that area.  Now with this more
generic change, that can also go away.

[akpm@linux-foundation.org: simplify PageAnonExclusive(), per Matthew]
  Link: https://lkml.kernel.org/r/Zg3u5Sh9EbbYPhaI@casper.infradead.org
Link: https://lkml.kernel.org/r/20240403013249.1418299-2-peterx@redhat.com
Signed-off-by: Peter Xu 
Acked-by: David Hildenbrand 
Cc: Huacai Chen 
Cc: Jason Gunthorpe 
Cc: Matthew Wilcox (Oracle) 
Cc: Nathan Chancellor 
Cc: Ryan Roberts 
Cc: WANG Xuerui 
Signed-off-by: Andrew Morton

proc: rewrite stable_page_flags()

2024-04-26T03:56:15+00:00

Reduce the usage of PageFlag tests and reduce the number of
compound_head() calls.

For multi-page folios, we'll now show all pages as having the flags that
apply to them, e.g.  if it's dirty, all pages will have the dirty flag set
instead of just the head page.  The mapped flag is still per page, as is
the hwpoison flag.

[willy@infradead.org: fix up some bits vs masks]
  Link: https://lkml.kernel.org/r/20240403173112.1450721-1-willy@infradead.org
[willy@infradead.org: fix warnings]
  Link: https://lkml.kernel.org/r/ZhBPtCYfSuFuUMEz@casper.infradead.org
Link: https://lkml.kernel.org/r/20240326171045.410737-11-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) 
Reviewed-by: Svetly Todorov 
Signed-off-by: Andrew Morton

mm: make is_free_buddy_page() take a const argument

2024-04-26T03:56:14+00:00

This function does not modify its argument; let the callers know that so
they can make better optimisation decisions.

Link: https://lkml.kernel.org/r/20240326171045.410737-6-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) 
Signed-off-by: Andrew Morton

mm/page-flags: make PageMappingFlags return bool

2024-04-26T03:56:01+00:00

Make PageMappingFlags() return bool like folio_mapping_flags().

Link: https://lkml.kernel.org/r/20240321030712.80618-1-gehao@kylinos.cn
Signed-off-by: Hao Ge 
Reviewed-by: Matthew Wilcox (Oracle) 
Reviewed-by: David Hildenbrand 
Signed-off-by: Andrew Morton

mm/page-flags: make __PageMovable return bool

2024-04-26T03:56:01+00:00

Make __PageMovable() return bool like __folio_test_movable().

Link: https://lkml.kernel.org/r/20240321032256.82063-1-gehao@kylinos.cn
Signed-off-by: Hao Ge 
Reviewed-by: David Hildenbrand 
Signed-off-by: Andrew Morton

mm: free up PG_slab

2024-04-26T03:56:00+00:00

Reclaim the Slab page flag by using a spare bit in PageType.  We are
perennially short of page flags for various purposes, and now that the
original SLAB allocator has been retired, SLUB does not use the
mapcount/page_type field.  This lets us remove a number of special cases
for ignoring mapcount on Slab pages.

[willy@infradead.org: update vmcoreinfo]
  Link: https://lkml.kernel.org/r/ZgGV-O8WYQ_83kxp@casper.infradead.org
Link: https://lkml.kernel.org/r/20240321142448.1645400-8-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) 
Acked-by: David Hildenbrand 
Cc: Miaohe Lin 
Cc: Muchun Song 
Cc: Oscar Salvador 
Cc: Vlastimil Babka 
Signed-off-by: Andrew Morton

mm: remove a call to compound_head() from is_page_hwpoison()

2024-04-26T03:56:00+00:00

We can call it only once instead of twice.

Link: https://lkml.kernel.org/r/20240321142448.1645400-7-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) 
Reviewed-by: David Hildenbrand 
Reviewed-by: Miaohe Lin 
Acked-by: Vlastimil Babka 
Cc: Muchun Song 
Cc: Oscar Salvador 
Signed-off-by: Andrew Morton