linux-kernel - [PATCH 1/8] mm: move highest_order() and next

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Message-Id: <d9c0ac9df6f6e6176b09fc1ae58146ec4f8d73f5.1714978902.git.baolin.wang@linux.alibaba.com>
Date: Mon,  6 May 2024 16:46:25 +0800
From: Baolin Wang <baolin.wang@...ux.alibaba.com>
To: akpm@...ux-foundation.org,
	hughd@...gle.com
Cc: willy@...radead.org,
	david@...hat.com,
	ioworker0@...il.com,
	wangkefeng.wang@...wei.com,
	ying.huang@...el.com,
	21cnbao@...il.com,
	ryan.roberts@....com,
	shy828301@...il.com,
	ziy@...dia.com,
	baolin.wang@...ux.alibaba.com,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/8] mm: move highest_order() and next_order() out of the THP config

Move highest_order() and next_order() out of the CONFIG_TRANSPARENT_HUGEPAGE
macro, which can be common functions to be used.

Signed-off-by: Baolin Wang <baolin.wang@...ux.alibaba.com>
---
 include/linux/huge_mm.h | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 017cee864080..e49b56c40a11 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -106,6 +106,17 @@ extern struct kobj_attribute shmem_enabled_attr;
 #define HPAGE_PUD_MASK	(~(HPAGE_PUD_SIZE - 1))
 #define HPAGE_PUD_SIZE	((1UL) << HPAGE_PUD_SHIFT)
 
+static inline int highest_order(unsigned long orders)
+{
+	return fls_long(orders) - 1;
+}
+
+static inline int next_order(unsigned long *orders, int prev)
+{
+	*orders &= ~BIT(prev);
+	return highest_order(*orders);
+}
+
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 
 extern unsigned long transparent_hugepage_flags;
@@ -138,17 +149,6 @@ static inline bool hugepage_flags_enabled(void)
 	       huge_anon_orders_madvise;
 }
 
-static inline int highest_order(unsigned long orders)
-{
-	return fls_long(orders) - 1;
-}
-
-static inline int next_order(unsigned long *orders, int prev)
-{
-	*orders &= ~BIT(prev);
-	return highest_order(*orders);
-}
-
 /*
  * Do the below checks:
  *   - For file vma, check if the linear page offset of vma is
-- 
2.39.3