mm: page_alloc: pass PFN to __free_pages_bootmem

__free_pages_bootmem prepares a page for release to the buddy allocator
and assumes that the struct page is initialised.  Parallel initialisation
of struct pages defers initialisation and __free_pages_bootmem can be
called for struct pages that cannot yet map struct page to PFN.  This
patch passes PFN to __free_pages_bootmem with no other functional change.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Tested-by: Nate Zimmer <nzimmer@sgi.com>
Tested-by: Waiman Long <waiman.long@hp.com>
Tested-by: Daniel J Blueman <daniel@numascale.com>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Robin Holt <robinmholt@gmail.com>
Cc: Nate Zimmer <nzimmer@sgi.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Waiman Long <waiman.long@hp.com>
Cc: Scott Norton <scott.norton@hp.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

5 files changed, 14 insertions, 11 deletions

diff --git a/mm/bootmem.c b/mm/bootmem.c
index 477be696511d..a23dd1934654 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -164,7 +164,7 @@ void __init free_bootmem_late(unsigned long physaddr, unsigned long size)
         end = PFN_DOWN(physaddr + size);
 
         for (; cursor < end; cursor++) {
-                __free_pages_bootmem(pfn_to_page(cursor), 0);
+                __free_pages_bootmem(pfn_to_page(cursor), cursor, 0);
                 totalram_pages++;
         }
 }
@@ -172,7 +172,7 @@ void __init free_bootmem_late(unsigned long physaddr, unsigned long size)
 static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
 {
         struct page *page;
-        unsigned long *map, start, end, pages, count = 0;
+        unsigned long *map, start, end, pages, cur, count = 0;
 
         if (!bdata->node_bootmem_map)
                 return 0;
@@ -210,17 +210,17 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
                 if (IS_ALIGNED(start, BITS_PER_LONG) && vec == ~0UL) {
                         int order = ilog2(BITS_PER_LONG);
 
-                        __free_pages_bootmem(pfn_to_page(start), order);
+                        __free_pages_bootmem(pfn_to_page(start), start, order);
                         count += BITS_PER_LONG;
                         start += BITS_PER_LONG;
                 } else {
-                        unsigned long cur = start;
+                        cur = start;
 
                         start = ALIGN(start + 1, BITS_PER_LONG);
                         while (vec && cur != start) {
                                 if (vec & 1) {
                                         page = pfn_to_page(cur);
-                                        __free_pages_bootmem(page, 0);
+                                        __free_pages_bootmem(page, cur, 0);
                                         count++;
                                 }
                                 vec >>= 1;
@@ -229,12 +229,13 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
                 }
         }
 
+        cur = bdata->node_min_pfn;
         page = virt_to_page(bdata->node_bootmem_map);
         pages = bdata->node_low_pfn - bdata->node_min_pfn;
         pages = bootmem_bootmap_pages(pages);
         count += pages;
         while (pages--)
-                __free_pages_bootmem(page++, 0);
+                __free_pages_bootmem(page++, cur++, 0);
 
         bdebug("nid=%td released=%lx\n", bdata - bootmem_node_data, count);
 
diff --git a/mm/internal.h b/mm/internal.h
index a25e359a4039..58e9022e3757 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -155,7 +155,8 @@ __find_buddy_index(unsigned long page_idx, unsigned int order)
 }
 
 extern int __isolate_free_page(struct page *page, unsigned int order);
-extern void __free_pages_bootmem(struct page *page, unsigned int order);
+extern void __free_pages_bootmem(struct page *page, unsigned long pfn,
+                                        unsigned int order);
 extern void prep_compound_page(struct page *page, unsigned long order);
 #ifdef CONFIG_MEMORY_FAILURE
 extern bool is_free_buddy_page(struct page *page);
diff --git a/mm/memblock.c b/mm/memblock.c
index 114df622853f..87108e77e476 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1419,7 +1419,7 @@ void __init __memblock_free_late(phys_addr_t base, phys_addr_t size)
         end = PFN_DOWN(base + size);
 
         for (; cursor < end; cursor++) {
-                __free_pages_bootmem(pfn_to_page(cursor), 0);
+                __free_pages_bootmem(pfn_to_page(cursor), cursor, 0);
                 totalram_pages++;
         }
 }
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index 4af8f88c2bd1..e57cf24babd6 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -86,7 +86,7 @@ void __init free_bootmem_late(unsigned long addr, unsigned long size)
         end = PFN_DOWN(addr + size);
 
         for (; cursor < end; cursor++) {
-                __free_pages_bootmem(pfn_to_page(cursor), 0);
+                __free_pages_bootmem(pfn_to_page(cursor), cursor, 0);
                 totalram_pages++;
         }
 }
@@ -101,7 +101,7 @@ static void __init __free_pages_memory(unsigned long start, unsigned long end)
                 while (start + (1UL << order) > end)
                         order--;
 
-                __free_pages_bootmem(pfn_to_page(start), order);
+                __free_pages_bootmem(pfn_to_page(start), start, order);
 
                 start += (1UL << order);
         }
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 39c8d56a4056..c2ee4ecad083 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -878,7 +878,8 @@ static void __free_pages_ok(struct page *page, unsigned int order)
         local_irq_restore(flags);
 }
 
-void __init __free_pages_bootmem(struct page *page, unsigned int order)
+void __init __free_pages_bootmem(struct page *page, unsigned long pfn,
+                                                        unsigned int order)
 {
         unsigned int nr_pages = 1 << order;
         struct page *p = page;