diff options
Diffstat (limited to 'mm/huge_memory.c')
-rw-r--r-- | mm/huge_memory.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index c14aec110e90..5beb62fa3d30 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1894,6 +1894,12 @@ static void __split_huge_page_tail(struct page *head, int tail, (1L << PG_unevictable) | (1L << PG_dirty))); + /* ->mapping in first tail page is compound_mapcount */ + VM_BUG_ON_PAGE(tail > 2 && page_tail->mapping != TAIL_MAPPING, + page_tail); + page_tail->mapping = head->mapping; + page_tail->index = head->index + tail; + /* Page flags must be visible before we make the page non-compound. */ smp_wmb(); @@ -1914,12 +1920,6 @@ static void __split_huge_page_tail(struct page *head, int tail, if (page_is_idle(head)) set_page_idle(page_tail); - /* ->mapping in first tail page is compound_mapcount */ - VM_BUG_ON_PAGE(tail > 2 && page_tail->mapping != TAIL_MAPPING, - page_tail); - page_tail->mapping = head->mapping; - - page_tail->index = head->index + tail; page_cpupid_xchg_last(page_tail, page_cpupid_last(head)); lru_add_page_tail(head, page_tail, lruvec, list); } |