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From: Zi Yan <ziy@nvidia.com>
To: David Hildenbrand <david@redhat.com>,
	Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
	linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Dan Carpenter <dan.carpenter@linaro.org>,
	Antonio Quartulli <antonio@mandelbit.com>,
	Hugh Dickins <hughd@google.com>,
	Kirill Shutemov <k.shutemov@gmail.com>, Zi Yan <ziy@nvidia.com>,
	Baolin Wang <baolin.wang@linux.alibaba.com>,
	"Liam R. Howlett" <Liam.Howlett@oracle.com>,
	Nico Pache <npache@redhat.com>,
	Ryan Roberts <ryan.roberts@arm.com>, Dev Jain <dev.jain@arm.com>,
	Barry Song <baohua@kernel.org>, Balbir Singh <balbirs@nvidia.com>,
	Matthew Brost <matthew.brost@intel.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH v4 2/6] mm/huge_memory: remove after_split label in __split_unmapped_folio().
Date: Thu, 17 Jul 2025 22:29:56 -0400	[thread overview]
Message-ID: <20250718023000.4044406-3-ziy@nvidia.com> (raw)
In-Reply-To: <20250718023000.4044406-1-ziy@nvidia.com>

Checking stop_split instead to avoid the goto statement.

Signed-off-by: Zi Yan <ziy@nvidia.com>
---
 mm/huge_memory.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 63eebca07628..e01359008b13 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -3463,18 +3463,18 @@ static int __split_unmapped_folio(struct folio *folio, int new_order,
 				if (xas_error(xas)) {
 					ret = xas_error(xas);
 					stop_split = true;
-					goto after_split;
 				}
 			}
 		}
 
-		folio_split_memcg_refs(folio, old_order, split_order);
-		split_page_owner(&folio->page, old_order, split_order);
-		pgalloc_tag_split(folio, old_order, split_order);
+		if (!stop_split) {
+			folio_split_memcg_refs(folio, old_order, split_order);
+			split_page_owner(&folio->page, old_order, split_order);
+			pgalloc_tag_split(folio, old_order, split_order);
 
-		__split_folio_to_order(folio, old_order, split_order);
+			__split_folio_to_order(folio, old_order, split_order);
+		}
 
-after_split:
 		/*
 		 * Iterate through after-split folios and update folio stats.
 		 * But in buddy allocator like split, the folio
-- 
2.47.2


  parent reply	other threads:[~2025-07-18  2:30 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-18  2:29 [PATCH v4 0/6] __folio_split() clean up Zi Yan
2025-07-18  2:29 ` [PATCH v4 1/6] mm/huge_memory: move unrelated code out of __split_unmapped_folio() Zi Yan
2025-07-18  7:19   ` David Hildenbrand
2025-07-18 14:55   ` Lorenzo Stoakes
2025-07-18  2:29 ` Zi Yan [this message]
2025-07-18  7:19   ` [PATCH v4 2/6] mm/huge_memory: remove after_split label in __split_unmapped_folio() David Hildenbrand
2025-07-18 14:58   ` Lorenzo Stoakes
2025-07-18  2:29 ` [PATCH v4 3/6] mm/huge_memory: deduplicate code in __folio_split() Zi Yan
2025-07-18  7:23   ` David Hildenbrand
2025-07-18  2:29 ` [PATCH v4 4/6] mm/huge_memory: convert VM_BUG* to VM_WARN* in __folio_split Zi Yan
2025-07-18  7:22   ` David Hildenbrand
2025-07-18 14:48     ` Zi Yan
2025-07-18 15:05   ` Lorenzo Stoakes
2025-07-18  2:29 ` [PATCH v4 5/6] mm/huge_memory: get frozen folio refcount with folio_expected_ref_count() Zi Yan
2025-07-18  2:30 ` [PATCH v4 6/6] mm/huge_memory: refactor after-split (page) cache code Zi Yan
2025-07-18  5:26 ` [PATCH v4 0/6] __folio_split() clean up Lorenzo Stoakes

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