+ mm-meminit-inline-some-helper-functions.patch added to -mm tree

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The patch titled
     Subject: mm: meminit: inline some helper functions
has been added to the -mm tree.  Its filename is
     mm-meminit-inline-some-helper-functions.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-meminit-inline-some-helper-functions.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-meminit-inline-some-helper-functions.patch

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------------------------------------------------------
From: Mel Gorman <mgorman@xxxxxxx>
Subject: mm: meminit: inline some helper functions

early_pfn_in_nid() and meminit_pfn_in_nid() are small functions that are
unnecessarily visible outside memory initialisation.  As well as
unnecessary visibility, it's unnecessary function call overhead when
initialising pages.  This patch moves the helpers inline.

Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
Cc: Daniel J Blueman <daniel@xxxxxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Nathan Zimmer <nzimmer@xxxxxxx>
Cc: Robin Holt <holt@xxxxxxx>
Cc: Scott Norton <scott.norton@xxxxxx>
Cc: Waiman Long <waiman.long@xxxxxx>
Cc: "Luck, Tony" <tony.luck@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 include/linux/mmzone.h |    9 ----
 mm/page_alloc.c        |   75 +++++++++++++++++++--------------------
 2 files changed, 38 insertions(+), 46 deletions(-)

diff -puN include/linux/mmzone.h~mm-meminit-inline-some-helper-functions include/linux/mmzone.h
--- a/include/linux/mmzone.h~mm-meminit-inline-some-helper-functions
+++ a/include/linux/mmzone.h
@@ -1227,15 +1227,6 @@ struct mminit_pfnnid_cache {
 	int last_nid;
 };
 
-#ifdef CONFIG_NODES_SPAN_OTHER_NODES
-bool early_pfn_in_nid(unsigned long pfn, int nid);
-bool meminit_pfn_in_nid(unsigned long pfn, int node,
-			struct mminit_pfnnid_cache *state);
-#else
-#define early_pfn_in_nid(pfn, nid)		(1)
-#define meminit_pfn_in_nid(pfn, nid, state)	(1)
-#endif
-
 #ifndef early_pfn_valid
 #define early_pfn_valid(pfn)	(1)
 #endif
diff -puN mm/page_alloc.c~mm-meminit-inline-some-helper-functions mm/page_alloc.c
--- a/mm/page_alloc.c~mm-meminit-inline-some-helper-functions
+++ a/mm/page_alloc.c
@@ -907,6 +907,44 @@ void __init __free_pages_bootmem(struct
 	__free_pages(page, order);
 }
 
+#if defined(CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID) || \
+        defined(CONFIG_HAVE_MEMBLOCK_NODE_MAP)
+/* Only safe to use early in boot when initialisation is single-threaded */
+struct __meminitdata mminit_pfnnid_cache global_init_state;
+int __meminit early_pfn_to_nid(unsigned long pfn)
+{
+	int nid;
+
+	/* The system will behave unpredictably otherwise */
+	BUG_ON(system_state != SYSTEM_BOOTING);
+
+	nid = __early_pfn_to_nid(pfn, &global_init_state);
+	if (nid >= 0)
+		return nid;
+	/* just returns 0 */
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_NODES_SPAN_OTHER_NODES
+static inline bool __meminit meminit_pfn_in_nid(unsigned long pfn, int node,
+					struct mminit_pfnnid_cache *state)
+{
+	int nid;
+
+	nid = __early_pfn_to_nid(pfn, state);
+	if (nid >= 0 && nid != node)
+		return false;
+	return true;
+}
+
+/* Only safe to use early in boot when initialisation is single-threaded */
+static inline bool __meminit early_pfn_in_nid(unsigned long pfn, int node)
+{
+	return meminit_pfn_in_nid(pfn, node, &global_init_state);
+}
+#endif
+
 #ifdef CONFIG_CMA
 /* Free whole pageblock and set its migration type to MIGRATE_CMA. */
 void __init init_cma_reserved_pageblock(struct page *page)
@@ -4524,43 +4562,6 @@ int __meminit __early_pfn_to_nid(unsigne
 }
 #endif /* CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID */
 
-struct __meminitdata mminit_pfnnid_cache global_init_state;
-
-/* Only safe to use early in boot when initialisation is single-threaded */
-int __meminit early_pfn_to_nid(unsigned long pfn)
-{
-	int nid;
-
-	/* The system will behave unpredictably otherwise */
-	BUG_ON(system_state != SYSTEM_BOOTING);
-
-	nid = __early_pfn_to_nid(pfn, &global_init_state);
-	if (nid >= 0)
-		return nid;
-	/* just returns 0 */
-	return 0;
-}
-
-#ifdef CONFIG_NODES_SPAN_OTHER_NODES
-bool __meminit meminit_pfn_in_nid(unsigned long pfn, int node,
-					struct mminit_pfnnid_cache *state)
-{
-	int nid;
-
-	nid = __early_pfn_to_nid(pfn, state);
-	if (nid >= 0 && nid != node)
-		return false;
-	return true;
-}
-
-/* Only safe to use early in boot when initialisation is single-threaded */
-bool __meminit early_pfn_in_nid(unsigned long pfn, int node)
-{
-	return meminit_pfn_in_nid(pfn, node, &global_init_state);
-}
-
-#endif
-
 /**
  * free_bootmem_with_active_regions - Call memblock_free_early_nid for each active range
  * @nid: The node to free memory on. If MAX_NUMNODES, all nodes are freed.
_

Patches currently in -mm which might be from mgorman@xxxxxxx are

jbd2-revert-must-not-fail-allocation-loops-back-to-gfp_nofail.patch
thp-cleanup-how-khugepaged-enters-freezer.patch
mm-new-mm-hook-framework.patch
mm-new-arch_remap-hook.patch
powerpc-mm-tracking-vdso-remap.patch
memblock-introduce-a-for_each_reserved_mem_region-iterator.patch
mm-meminit-move-page-initialization-into-a-separate-function.patch
mm-meminit-only-set-page-reserved-in-the-memblock-region.patch
mm-page_alloc-pass-pfn-to-__free_pages_bootmem.patch
mm-meminit-make-__early_pfn_to_nid-smp-safe-and-introduce-meminit_pfn_in_nid.patch
mm-meminit-inline-some-helper-functions.patch
mm-meminit-initialise-a-subset-of-struct-pages-if-config_deferred_struct_page_init-is-set.patch
mm-meminit-initialise-a-subset-of-struct-pages-if-config_deferred_struct_page_init-is-set-fix.patch
mm-meminit-initialise-remaining-struct-pages-in-parallel-with-kswapd.patch
mm-meminit-initialise-remaining-struct-pages-in-parallel-with-kswapd-fix.patch
mm-meminit-minimise-number-of-pfn-page-lookups-during-initialisation.patch
x86-mm-enable-deferred-struct-page-initialisation-on-x86-64.patch
mm-meminit-free-pages-in-large-chunks-where-possible.patch
mm-meminit-reduce-number-of-times-pageblocks-are-set-during-struct-page-init.patch
mm-meminit-remove-mminit_verify_page_links.patch
page-flags-trivial-cleanup-for-pagetrans-helpers.patch
page-flags-introduce-page-flags-policies-wrt-compound-pages.patch
page-flags-define-pg_locked-behavior-on-compound-pages.patch
page-flags-define-behavior-of-fs-io-related-flags-on-compound-pages.patch
page-flags-define-behavior-of-lru-related-flags-on-compound-pages.patch
page-flags-define-behavior-slb-related-flags-on-compound-pages.patch
page-flags-define-behavior-of-xen-related-flags-on-compound-pages.patch
page-flags-define-pg_reserved-behavior-on-compound-pages.patch
page-flags-define-pg_swapbacked-behavior-on-compound-pages.patch
page-flags-define-pg_swapcache-behavior-on-compound-pages.patch
page-flags-define-pg_mlocked-behavior-on-compound-pages.patch
page-flags-define-pg_uncached-behavior-on-compound-pages.patch
page-flags-define-pg_uptodate-behavior-on-compound-pages.patch
page-flags-look-on-head-page-if-the-flag-is-encoded-in-page-mapping.patch
mm-sanitize-page-mapping-for-tail-pages.patch
mm-vmscan-do-not-throttle-based-on-pfmemalloc-reserves-if-node-has-no-reclaimable-pages.patch
mm-vmscan-fix-the-page-state-calculation-in-too_many_isolated.patch
mm-move-lazy-free-pages-to-inactive-list.patch
mm-move-lazy-free-pages-to-inactive-list-fix.patch
mm-move-lazy-free-pages-to-inactive-list-fix-fix.patch
do_shared_fault-check-that-mmap_sem-is-held.patch

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