diff options
| -rw-r--r-- | mm/migrate.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 37865f85df6d..98f1c11197a8 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1035,11 +1035,16 @@ out: * destination folio. This is safe because nobody is using them * except us. */ +union migration_ptr { + struct anon_vma *anon_vma; + struct address_space *mapping; +}; static void __migrate_folio_record(struct folio *dst, unsigned long page_was_mapped, struct anon_vma *anon_vma) { - dst->mapping = (void *)anon_vma; + union migration_ptr ptr = { .anon_vma = anon_vma }; + dst->mapping = ptr.mapping; dst->private = (void *)page_was_mapped; } @@ -1047,7 +1052,8 @@ static void __migrate_folio_extract(struct folio *dst, int *page_was_mappedp, struct anon_vma **anon_vmap) { - *anon_vmap = (void *)dst->mapping; + union migration_ptr ptr = { .mapping = dst->mapping }; + *anon_vmap = ptr.anon_vma; *page_was_mappedp = (unsigned long)dst->private; dst->mapping = NULL; dst->private = NULL; |