5.4-stable review patch. If anyone has any objections, please let me know.
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From: Stephen Rothwell sfr@canb.auug.org.au
[ 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@canb.auug.org.au [mpe: Flesh out change log from linux-next patch] Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://msgid.link/20231127132809.45c2b398@canb.auug.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- 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 2bf7e1b4fd82..c4890f4b0b6c 100644 --- a/arch/powerpc/mm/book3s64/pgtable.c +++ b/arch/powerpc/mm/book3s64/pgtable.c @@ -442,6 +442,7 @@ 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 @@ -463,6 +464,7 @@ int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
return true; } +#endif
/* * Does the CPU support tlbie?