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mm: page_alloc: pass PFN to __free_pages_bootmem 

[ Upstream commit d70ddd7a5d ]

__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>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
wifi-calibration
Mel Gorman 2015-06-30 14:56:52 -07:00 committed by Sasha Levin
parent 474b8c6d32
commit bbd0b13f91
5 changed files with 14 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
mm/bootmem.c
View File

@ -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);

3
mm/internal.h
View File

@ -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);

2
mm/memblock.c
View File

@ -1316,7 +1316,7 @@ 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++;
}
}

4
mm/nobootmem.c
View File

@ -77,7 +77,7 @@ 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++;
}
}
@ -92,7 +92,7 @@ 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);
}

3
mm/page_alloc.c
View File

@ -832,7 +832,8 @@ 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;