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mm: postpone migrated page mapping reset

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Postpone resetting page->mapping until the final remove_migration_ptes().
Otherwise the expression PageAnon(migration_entry_to_page(entry)) does not
work.

Signed-off-by: Konstantin Khlebnikov <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Konstantin Khlebnikov 2012-02-03 15:37:13 -08:00 • committed by Linus Torvalds
commit 35512ecaef
1 changed files with 1 additions and 1 deletions
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2
mm/migrate.c
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@ -445,7 +445,6 @@ void migrate_page_copy(struct page *newpage, struct page *page)
ClearPageSwapCache(page);
ClearPagePrivate(page);
set_page_private(page, 0);
page->mapping = NULL;
/*
* If any waiters have accumulated on the new page then
@ -667,6 +666,7 @@ static int move_to_new_page(struct page *newpage, struct page *page,
} else {
if (remap_swapcache)
remove_migration_ptes(page, newpage);
page->mapping = NULL;
}
unlock_page(newpage);