[PATCH 4/5] mm/huge_memory: fold nested ifs in __folio_freeze_and_split_unmapped()

[Kiryl Shutsemau]

From: "Kiryl Shutsemau (Meta)" <kas@xxxxxxxxxx>

The two nested conditions guard a single statistics update.

Fold them into one condition and drop the braces from the
single-statement/single-line bodies.

No functional change intended.

Assisted-by: Claude-Code:claude-opus-5
Signed-off-by: Kiryl Shutsemau (Meta) <kas@xxxxxxxxxx>
---
 mm/huge_memory.c | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 36e90756e83b..001d89c57fa2 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -3955,19 +3955,14 @@ static int __folio_freeze_and_split_unmapped(struct folio *folio, unsigned int n
 			      MTHP_STAT_NR_ANON_PARTIALLY_MAPPED, -1);
 	}
 
-	if (mapping) {
+	if (mapping && folio_test_pmd_mappable(folio) &&
+	    new_order < HPAGE_PMD_ORDER) {
 		int nr = folio_nr_pages(folio);
 
-		if (folio_test_pmd_mappable(folio) &&
-		    new_order < HPAGE_PMD_ORDER) {
-			if (folio_test_swapbacked(folio)) {
-				lruvec_stat_mod_folio(folio,
-						      NR_SHMEM_THPS, -nr);
-			} else {
-				lruvec_stat_mod_folio(folio,
-						      NR_FILE_THPS, -nr);
-			}
-		}
+		if (folio_test_swapbacked(folio))
+			lruvec_stat_mod_folio(folio, NR_SHMEM_THPS, -nr);
+		else
+			lruvec_stat_mod_folio(folio, NR_FILE_THPS, -nr);
 	}
 
 	if (folio_test_swapcache(folio)) {
-- 
2.54.0