The patch titled
Subject: mm/mremap: fix 'move_normal_pmd' unused function warning
has been added to the -mm tree. Its filename is
mm-speed-up-mremap-by-20x-on-large-regions-v5-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-speed-up-mremap-by-20x-on-large-regions-v5-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-speed-up-mremap-by-20x-on-large-regions-v5-fix.patch
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------------------------------------------------------
From: "Joel Fernandes (Google)" <joel@xxxxxxxxxxxxxxxxx>
Subject: mm/mremap: fix 'move_normal_pmd' unused function warning
The move_normal_pmd function may not be used on architectures that don't
enable HAVE_MOVE_PMD. This has shown to cause unused function warnings on
those architectures. Lets not define it for those cases.
Link: http://lkml.kernel.org/r/20181108224457.GB209347@xxxxxxxxxx
Signed-off-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
Reported-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mremap.c | 2 ++
1 file changed, 2 insertions(+)
--- a/mm/mremap.c~mm-speed-up-mremap-by-20x-on-large-regions-v5-fix
+++ a/mm/mremap.c
@@ -191,6 +191,7 @@ static void move_ptes(struct vm_area_str
drop_rmap_locks(vma);
}
+#ifdef CONFIG_HAVE_MOVE_PMD
static bool move_normal_pmd(struct vm_area_struct *vma, unsigned long old_addr,
unsigned long new_addr, unsigned long old_end,
pmd_t *old_pmd, pmd_t *new_pmd)
@@ -234,6 +235,7 @@ static bool move_normal_pmd(struct vm_ar
return true;
}
+#endif
unsigned long move_page_tables(struct vm_area_struct *vma,
unsigned long old_addr, struct vm_area_struct *new_vma,
_
Patches currently in -mm which might be from joel@xxxxxxxxxxxxxxxxx are
mm-treewide-remove-unused-address-argument-from-pte_alloc-functions-v2.patch
mm-speed-up-mremap-by-20x-on-large-regions-v5.patch
mm-speed-up-mremap-by-20x-on-large-regions-v5-fix.patch
mm-select-have_move_pmd-in-x86-for-faster-mremap.patch
