[PATCH V1 2/2] mm/damon/core: remove duplicate check about THP

Xin Hao
2022-09-15T14:22:55Z

In damon_young_pmd_entry(), it calls pmd_trans_huge() to check whether
the OS supports THP, if CONFIG_TRANSPARENT_HUGEPAGE is not included,
the pmd_trans_huge() will return 0.

Signed-off-by: Xin Hao <xhao@linux.alibaba.com>
---
mm/damon/vaddr.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c
index 58bf1bbad530..21daaa5503fb 100644
--- a/mm/damon/vaddr.c
+++ b/mm/damon/vaddr.c
@@ -434,7 +434,6 @@ static int damon_young_pmd_entry(pmd_t *pmd, unsigned long addr,
struct page *page;
struct damon_young_walk_private *priv = walk->private;

-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
if (pmd_trans_huge(*pmd)) {
ptl = pmd_lock(walk->mm, pmd);
if (!pmd_present(*pmd)) {
@@ -462,7 +461,6 @@ static int damon_young_pmd_entry(pmd_t *pmd, unsigned long addr,
}

regular_page:
-#endif /* CONFIG_TRANSPARENT_HUGEPAGE */

if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd)))
return -EINVAL;
--
2.31.0