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authorKonstantin Khlebnikov <khlebnikov@openvz.org>2012-02-03 15:37:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-02-03 16:16:40 -0800
commit35512ecaef03250fe50ad81430dd467f01d9a96b (patch)
tree66ba9202c36c4267f765b8980f2c70d7c3eb4b90 /mm
parenta1b58c237b73f10221b31e05b47a6565558207ef (diff)
downloadlinux-35512ecaef03250fe50ad81430dd467f01d9a96b.tar.gz
mm: postpone migrated page mapping reset
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 <khlebnikov@openvz.org> Cc: Hugh Dickins <hughd@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/migrate.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/migrate.c b/mm/migrate.c
index 9871a56d82c..df141f60289 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -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);