github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-22 06:01:53 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

mm/page_alloc: add __alloc_frozen_pages()

Browse Source 
Defer the initialisation of the page refcount to the new __alloc_pages()
wrapper and turn the old __alloc_pages() into __alloc_frozen_pages().

Link: https://lkml.kernel.org/r/20241125210149.2976098-14-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: William Kucharski <william.kucharski@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2024-11-25 21:01:45 +00:00 committed by Andrew Morton
parent c972106db3
commit 49249a2a5e
2 changed files with 18 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
mm/internal.h
View File

@ -740,6 +740,10 @@ extern bool free_pages_prepare(struct page *page, unsigned int order);
extern int user_min_free_kbytes;
struct page *__alloc_frozen_pages_noprof(gfp_t, unsigned int order, int nid,
nodemask_t *);
#define __alloc_frozen_pages(...) \
alloc_hooks(__alloc_frozen_pages_noprof(__VA_ARGS__))
void free_frozen_pages(struct page *page, unsigned int order);
void free_unref_folios(struct folio_batch *fbatch);

18
mm/page_alloc.c
View File

@ -4713,8 +4713,8 @@ EXPORT_SYMBOL_GPL(alloc_pages_bulk_noprof);
/*
* This is the 'heart' of the zoned buddy allocator.
*/
struct page *__alloc_pages_noprof(gfp_t gfp, unsigned int order,
int preferred_nid, nodemask_t *nodemask)
struct page *__alloc_frozen_pages_noprof(gfp_t gfp, unsigned int order,
int preferred_nid, nodemask_t *nodemask)
{
struct page *page;
unsigned int alloc_flags = ALLOC_WMARK_LOW;
@ -4770,14 +4770,24 @@ struct page *__alloc_pages_noprof(gfp_t gfp, unsigned int order,
free_frozen_pages(page, order);
page = NULL;
}
if (page)
set_page_refcounted(page);
trace_mm_page_alloc(page, order, alloc_gfp, ac.migratetype);
kmsan_alloc_page(page, order, alloc_gfp);
return page;
}
EXPORT_SYMBOL(__alloc_frozen_pages_noprof);
struct page *__alloc_pages_noprof(gfp_t gfp, unsigned int order,
int preferred_nid, nodemask_t *nodemask)
{
struct page *page;
page = __alloc_frozen_pages_noprof(gfp, order, preferred_nid, nodemask);
if (page)
set_page_refcounted(page);
return page;
}
EXPORT_SYMBOL(__alloc_pages_noprof);
struct folio *__folio_alloc_noprof(gfp_t gfp, unsigned int order, int preferred_nid,