6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
[ Upstream commit 0d555b57ee660d8a871781c0eebf006e855e918d ]
The linux-next build of powerpc64 allnoconfig fails with:
arch/powerpc/mm/book3s64/pgtable.c:557:5: error: no previous prototype for 'pmd_move_must_withdraw'
557 | int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
| ^~~~~~~~~~~~~~~~~~~~~~
Caused by commit:
c6345dfa6e3e ("Makefile.extrawarn: turn on missing-prototypes globally")
Fix it by moving the function definition under
CONFIG_TRANSPARENT_HUGEPAGE like the prototype. The function is only
called when CONFIG_TRANSPARENT_HUGEPAGE=y.
Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
[mpe: Flesh out change log from linux-next patch]
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://msgid.link/20231127132809.45c2b398@xxxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
arch/powerpc/mm/book3s64/pgtable.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/mm/book3s64/pgtable.c b/arch/powerpc/mm/book3s64/pgtable.c
index 8f8a62d3ff4d..926bec775f41 100644
--- a/arch/powerpc/mm/book3s64/pgtable.c
+++ b/arch/powerpc/mm/book3s64/pgtable.c
@@ -542,6 +542,7 @@ void ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr,
set_pte_at(vma->vm_mm, addr, ptep, pte);
}
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
/*
* For hash translation mode, we use the deposited table to store hash slot
* information and they are stored at PTRS_PER_PMD offset from related pmd
@@ -563,6 +564,7 @@ int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
return true;
}
+#endif
/*
* Does the CPU support tlbie?
--
2.43.0
