[PATCH v2 3/3] fs: stable_page_flags(): simplify KPF_IDLE handling

[Jinjiang Tu <tujinjiang@huawei.com>]

For KPF_IDLE, folio_test_idle() check in set_ps_flags() already handles
all config cases, so remove the duplicate code in stable_page_flags() that
deals with CONFIG_PAGE_IDLE_FLAG for the 64‑bit case.

No functional change is intended.

Signed-off-by: Jinjiang Tu <tujinjiang@huawei.com>
---
 fs/proc/page.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/fs/proc/page.c b/fs/proc/page.c
index b3c1d7a7604d..260772b20bd9 100644
--- a/fs/proc/page.c
+++ b/fs/proc/page.c
@@ -196,6 +196,9 @@ u64 stable_page_flags(const struct page *page)
 	if (ps.flags & PAGE_SNAPSHOT_PG_BUDDY)
 		u |= BIT_ULL(KPF_BUDDY);
 
+	if (ps.flags & PAGE_SNAPSHOT_PG_IDLE)
+		u |= BIT_ULL(KPF_IDLE);
+
 	if (folio_test_offline(folio))
 		u |= BIT_ULL(KPF_OFFLINE);
 	if (folio_test_pgtable(folio))
@@ -203,13 +206,6 @@ u64 stable_page_flags(const struct page *page)
 	if (folio_test_slab(folio))
 		u |= BIT_ULL(KPF_SLAB);
 
-#if defined(CONFIG_PAGE_IDLE_FLAG) && defined(CONFIG_64BIT)
-	u |= kpf_copy_bit(k, KPF_IDLE,          PG_idle);
-#else
-	if (ps.flags & PAGE_SNAPSHOT_PG_IDLE)
-		u |= BIT_ULL(KPF_IDLE);
-#endif
-
 	u |= kpf_copy_bit(k, KPF_LOCKED,	PG_locked);
 	u |= kpf_copy_bit(k, KPF_DIRTY,		PG_dirty);
 	u |= kpf_copy_bit(k, KPF_UPTODATE,	PG_uptodate);
-- 
2.43.0