linux-kernel - [PATCH AUTOSEL 6.6 02/12] book3s64/radix: Fix compile errors when CONFIG_ARCH_WANT_OPTIMIZE_DAX

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Message-Id: <20250506213647.2983356-2-sashal@kernel.org>
Date: Tue,  6 May 2025 17:36:37 -0400
From: Sasha Levin <sashal@...nel.org>
To: patches@...ts.linux.dev,
	stable@...r.kernel.org
Cc: "Ritesh Harjani (IBM)" <ritesh.list@...il.com>,
	Donet Tom <donettom@...ux.ibm.com>,
	Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Sasha Levin <sashal@...nel.org>,
	mpe@...erman.id.au,
	hbathini@...ux.ibm.com,
	linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH AUTOSEL 6.6 02/12] book3s64/radix: Fix compile errors when CONFIG_ARCH_WANT_OPTIMIZE_DAX_VMEMMAP=n

From: "Ritesh Harjani (IBM)" <ritesh.list@...il.com>

[ Upstream commit 29bdc1f1c1df80868fb35bc69d1f073183adc6de ]

Fix compile errors when CONFIG_ARCH_WANT_OPTIMIZE_DAX_VMEMMAP=n

Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@...il.com>
Signed-off-by: Donet Tom <donettom@...ux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@...ux.ibm.com>
Link: https://patch.msgid.link/8231763344223c193e3452eab0ae8ea966aff466.1741609795.git.donettom@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/powerpc/mm/book3s64/radix_pgtable.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c
index c6a4ac766b2bf..425b1a9eed8f0 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -912,7 +912,7 @@ int __meminit radix__vmemmap_create_mapping(unsigned long start,
 	return 0;
 }
 
-
+#ifdef CONFIG_ARCH_WANT_OPTIMIZE_DAX_VMEMMAP
 bool vmemmap_can_optimize(struct vmem_altmap *altmap, struct dev_pagemap *pgmap)
 {
 	if (radix_enabled())
@@ -920,6 +920,7 @@ bool vmemmap_can_optimize(struct vmem_altmap *altmap, struct dev_pagemap *pgmap)
 
 	return false;
 }
+#endif
 
 int __meminit vmemmap_check_pmd(pmd_t *pmdp, int node,
 				unsigned long addr, unsigned long next)
-- 
2.39.5