The patch titled
Subject: mm: avoid CONFIG_MMU=n build failure in pmd_none_or_trans_huge_or_clear_bad
has been added to the -mm tree. Its filename is
mm-thp-fix-pmd_bad-triggering-in-code-paths-holding-mmap_sem-read-mode-fix.patch
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From: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Subject: mm: avoid CONFIG_MMU=n build failure in pmd_none_or_trans_huge_or_clear_bad
pmd_none_or_trans_huge_or_clear_bad must be defined after pmd_trans_huge,
so add #ifdef CONFIG_MMU around the whole block that shall not be needed
for archs without pagetables.
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Reported-by: Mark Salter <msalter@xxxxxxxxxx>
Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/asm-generic/pgtable.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff -puN include/asm-generic/pgtable.h~mm-thp-fix-pmd_bad-triggering-in-code-paths-holding-mmap_sem-read-mode-fix include/asm-generic/pgtable.h
--- a/include/asm-generic/pgtable.h~mm-thp-fix-pmd_bad-triggering-in-code-paths-holding-mmap_sem-read-mode-fix
+++ a/include/asm-generic/pgtable.h
@@ -426,6 +426,8 @@ extern void untrack_pfn_vma(struct vm_ar
unsigned long size);
#endif
+#ifdef CONFIG_MMU
+
#ifndef CONFIG_TRANSPARENT_HUGEPAGE
static inline int pmd_trans_huge(pmd_t pmd)
{
@@ -442,7 +444,7 @@ static inline int pmd_write(pmd_t pmd)
return 0;
}
#endif /* __HAVE_ARCH_PMD_WRITE */
-#endif
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
/*
* This function is meant to be used by sites walking pagetables with
@@ -501,6 +503,8 @@ static inline int pmd_trans_unstable(pmd
#endif
}
+#endif /* CONFIG_MMU */
+
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_GENERIC_PGTABLE_H */
_
Subject: Subject: mm: avoid CONFIG_MMU=n build failure in pmd_none_or_trans_huge_or_clear_bad
Patches currently in -mm which might be from aarcange@xxxxxxxxxx are
linux-next.patch
mm-thp-fix-pmd_bad-triggering-in-code-paths-holding-mmap_sem-read-mode.patch
mm-thp-fix-pmd_bad-triggering-in-code-paths-holding-mmap_sem-read-mode-checkpatch-fixes.patch
mm-thp-fix-pmd_bad-triggering-in-code-paths-holding-mmap_sem-read-mode-fix.patch
vmscan-reclaim-at-order-0-when-compaction-is-enabled.patch
vmscan-kswapd-carefully-call-compaction.patch
vmscan-kswapd-carefully-call-compaction-fix.patch
vmscan-only-defer-compaction-for-failed-order-and-higher.patch
mm-compaction-make-compact_control-order-signed.patch
mm-compaction-make-compact_control-order-signed-fix.patch
hugetlbfs-fix-hugetlb_get_unmapped_area.patch
hugetlb-try-to-search-again-if-it-is-really-needed.patch
hugetlb-try-to-search-again-if-it-is-really-needed-fix.patch
mm-do-not-reset-cached_hole_size-when-vma-is-unmapped.patch
mm-search-from-free_area_cache-for-the-bigger-size.patch
pagemap-avoid-splitting-thp-when-reading-proc-pid-pagemap.patch
thp-optimize-away-unnecessary-page-table-locking.patch
thp-optimize-away-unnecessary-page-table-locking-fix.patch
pagemap-export-kpf_thp.patch
pagemap-document-kpf_thp-and-make-page-types-aware-of-it.patch
pagemap-introduce-data-structure-for-pagemap-entry.patch
mm-hugetlb-defer-freeing-pages-when-gathering-surplus-pages.patch
thp-transparent_hugepage=-can-also-be-specified-on-cmdline.patch
thp-allow-a-hwpoisoned-head-page-to-be-put-back-to-lru.patch
ksm-cleanup-introduce-find_mergeable_vma.patch
numa_emulation-fix-cpumask_of_node.patch
memcg-remove-unnecessary-thp-check-in-page-stat-accounting.patch
memcg-clean-up-existing-move-charge-code.patch
thp-add-hpage_pmd_-definitions-for-config_transparent_hugepage.patch
memcg-avoid-thp-split-in-task-migration.patch
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