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authorMatthew Wilcox (Oracle) <willy@infradead.org>2021-05-07 15:26:29 -0400
committerMatthew Wilcox (Oracle) <willy@infradead.org>2021-10-18 07:49:39 -0400
commit19138349ed59b90ce58aca319b873eca2e04ad43 (patch)
treeb55487b03b82b5fb9e5837c4698ccfd17eda5857 /mm/page_owner.c
parent3417013e0d183be9b42d794082eec0ec1c5b5f15 (diff)
downloadlinux-19138349ed59b90ce58aca319b873eca2e04ad43.tar.bz2
mm/migrate: Add folio_migrate_flags()
Turn migrate_page_states() into a wrapper around folio_migrate_flags(). Also convert two functions only called from folio_migrate_flags() to be folio-based. ksm_migrate_page() becomes folio_migrate_ksm() and copy_page_owner() becomes folio_copy_owner(). folio_migrate_flags() alone shrinks by two thirds -- 1967 bytes down to 642 bytes. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Zi Yan <ziy@nvidia.com> Reviewed-by: David Howells <dhowells@redhat.com> Acked-by: Vlastimil Babka <vbabka@suse.cz>
Diffstat (limited to 'mm/page_owner.c')
-rw-r--r--mm/page_owner.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/mm/page_owner.c b/mm/page_owner.c
index 62402d22539b..d24ed221357c 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -210,10 +210,10 @@ void __split_page_owner(struct page *page, unsigned int nr)
}
}
-void __copy_page_owner(struct page *oldpage, struct page *newpage)
+void __folio_copy_owner(struct folio *newfolio, struct folio *old)
{
- struct page_ext *old_ext = lookup_page_ext(oldpage);
- struct page_ext *new_ext = lookup_page_ext(newpage);
+ struct page_ext *old_ext = lookup_page_ext(&old->page);
+ struct page_ext *new_ext = lookup_page_ext(&newfolio->page);
struct page_owner *old_page_owner, *new_page_owner;
if (unlikely(!old_ext || !new_ext))
@@ -231,11 +231,11 @@ void __copy_page_owner(struct page *oldpage, struct page *newpage)
new_page_owner->free_ts_nsec = old_page_owner->ts_nsec;
/*
- * We don't clear the bit on the oldpage as it's going to be freed
+ * We don't clear the bit on the old folio as it's going to be freed
* after migration. Until then, the info can be useful in case of
* a bug, and the overall stats will be off a bit only temporarily.
* Also, migrate_misplaced_transhuge_page() can still fail the
- * migration and then we want the oldpage to retain the info. But
+ * migration and then we want the old folio to retain the info. But
* in that case we also don't need to explicitly clear the info from
* the new page, which will be freed.
*/