linux-kernel - [PATCH 1/7] mm/khugepaged: remove unneeded shmem_huge

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Date:   Sat, 11 Jun 2022 16:47:25 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <aarcange@...hat.com>, <willy@...radead.org>, <vbabka@...e.cz>,
        <dhowells@...hat.com>, <neilb@...e.de>, <apopple@...dia.com>,
        <david@...hat.com>, <surenb@...gle.com>, <peterx@...hat.com>,
        <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH 1/7] mm/khugepaged: remove unneeded shmem_huge_enabled() check

If we reach here, hugepage_vma_check() has already made sure that hugepage
is enabled for shmem. Remove this duplicated check.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/khugepaged.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 476d79360101..73570dfffcec 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -2153,8 +2153,6 @@ static unsigned int khugepaged_scan_mm_slot(unsigned int pages,
 		if (khugepaged_scan.address < hstart)
 			khugepaged_scan.address = hstart;
 		VM_BUG_ON(khugepaged_scan.address & ~HPAGE_PMD_MASK);
-		if (shmem_file(vma->vm_file) && !shmem_huge_enabled(vma))
-			goto skip;
 
 		while (khugepaged_scan.address < hend) {
 			int ret;
-- 
2.23.0