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mm/ksm: add folio_set_stable_node

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Turn set_page_stable_node() into a wrapper folio_set_stable_node, and then
use it to replace the former.  we will merge them together after all place
converted to folio.

Link: https://lkml.kernel.org/r/20240411061713.1847574-4-alexs@kernel.org
Signed-off-by: Alex Shi (tencent) <alexs@kernel.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Izik Eidus <izik.eidus@ravellosystems.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Alex Shi (tencent) 2024-04-11 14:17:04 +08:00 committed by Andrew Morton
parent f39b6e2dc1
commit b8b0ff244d
1 changed files with 7 additions and 1 deletions
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8
mm/ksm.c
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@ -1109,6 +1109,12 @@ static inline void set_page_stable_node(struct page *page,
page->mapping = (void *)((unsigned long)stable_node | PAGE_MAPPING_KSM);
}
static inline void folio_set_stable_node(struct folio *folio,
struct ksm_stable_node *stable_node)
{
set_page_stable_node(&folio->page, stable_node);
}
#ifdef CONFIG_SYSFS
/*
* Only called through the sysfs control interface:
@ -3241,7 +3247,7 @@ void folio_migrate_ksm(struct folio *newfolio, struct folio *folio)
* has gone stale (or that folio_test_swapcache has been cleared).
*/
smp_wmb();
set_page_stable_node(&folio->page, NULL);
folio_set_stable_node(folio, NULL);
}
}
#endif /* CONFIG_MIGRATION */