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mm: add page_rmappable_folio() wrapper

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folio_prep_large_rmappable() is being used repeatedly along with a
conversion from page to folio, a check non-NULL, a check order > 1: wrap
it all up into struct folio *page_rmappable_folio(struct page *).

Link: https://lkml.kernel.org/r/8d92c6cf-eebe-748-e29c-c8ab224c741@google.com
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Tejun heo <tj@kernel.org>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Hugh Dickins 2023-10-03 02:25:33 -07:00 committed by Andrew Morton
parent 2cafb58217
commit 23e4883248
3 changed files with 14 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
mm/internal.h
View file

@ -415,6 +415,15 @@ static inline void folio_set_order(struct folio *folio, unsigned int order)
void folio_undo_large_rmappable(struct folio *folio);
static inline struct folio *page_rmappable_folio(struct page *page)
{
struct folio *folio = (struct folio *)page;
if (folio && folio_order(folio) > 1)
folio_prep_large_rmappable(folio);
return folio;
}
static inline void prep_compound_head(struct page *page, unsigned int order)
{
struct folio *folio = (struct folio *)page;

17
mm/mempolicy.c
View file

@ -2122,10 +2122,7 @@ struct folio *vma_alloc_folio(gfp_t gfp, int order, struct vm_area_struct *vma,
mpol_cond_put(pol);
gfp |= __GFP_COMP;
page = alloc_page_interleave(gfp, order, nid);
folio = (struct folio *)page;
if (folio && order > 1)
folio_prep_large_rmappable(folio);
goto out;
return page_rmappable_folio(page);
}
if (pol->mode == MPOL_PREFERRED_MANY) {
@ -2135,10 +2132,7 @@ struct folio *vma_alloc_folio(gfp_t gfp, int order, struct vm_area_struct *vma,
gfp |= __GFP_COMP;
page = alloc_pages_preferred_many(gfp, order, node, pol);
mpol_cond_put(pol);
folio = (struct folio *)page;
if (folio && order > 1)
folio_prep_large_rmappable(folio);
goto out;
return page_rmappable_folio(page);
}
if (unlikely(IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && hugepage)) {
@ -2232,12 +2226,7 @@ EXPORT_SYMBOL(alloc_pages);
struct folio *folio_alloc(gfp_t gfp, unsigned order)
{
struct page *page = alloc_pages(gfp | __GFP_COMP, order);
struct folio *folio = (struct folio *)page;
if (folio && order > 1)
folio_prep_large_rmappable(folio);
return folio;
return page_rmappable_folio(alloc_pages(gfp | __GFP_COMP, order));
}
EXPORT_SYMBOL(folio_alloc);

8
mm/page_alloc.c
View file

@ -4598,12 +4598,8 @@ struct folio *__folio_alloc(gfp_t gfp, unsigned int order, int preferred_nid,
nodemask_t *nodemask)
{
struct page *page = __alloc_pages(gfp | __GFP_COMP, order,
preferred_nid, nodemask);
struct folio *folio = (struct folio *)page;
if (folio && order > 1)
folio_prep_large_rmappable(folio);
return folio;
preferred_nid, nodemask);
return page_rmappable_folio(page);
}
EXPORT_SYMBOL(__folio_alloc);