From 296b8b566b73a1dc2c125db9b7d90a4592026185 Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@linux-foundation.org>
Date: Wed, 15 Feb 2023 12:53:56 -0800
Subject: [PATCH] mm-hugetlb-change-to-return-bool-for-isolate_hugetlb-fix

shorten locked section, per SeongJae Park

Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 mm/hugetlb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 16513cd23d5d7..07abcb6eb2030 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2933,8 +2933,8 @@ static int alloc_and_dissolve_hugetlb_folio(struct hstate *h,
 		 */
 		spin_unlock_irq(&hugetlb_lock);
 		isolated = isolate_hugetlb(old_folio, list);
-		spin_lock_irq(&hugetlb_lock);
 		ret = isolated ? 0 : -EBUSY;
+		spin_lock_irq(&hugetlb_lock);
 		goto free_new;
 	} else if (!folio_test_hugetlb_freed(old_folio)) {
 		/*