Use local variable huge to check whether page is hugetlb page to avoid
calling PageHuge() multiple times to save cpu cycles. PageHuge() will be
stable while extra page refcnt is held.
Link: https://lkml.kernel.org/r/20230711055016.2286677-5-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
}
lock_page(page);
- if (!PageHuge(page))
+ if (!huge)
wait_on_page_writeback(page);
if (PageHWPoison(page)) {
unlock_page(page);
return 0;
}
- if (!PageHuge(page) && PageLRU(page) && !PageSwapCache(page))
+ if (!huge && PageLRU(page) && !PageSwapCache(page))
/*
* Try to invalidate first. This should work for
* non dirty unmapped page cache pages.