Hi Andrew, After merging the akpm tree, today's linux-next build (sparc defconfig) failed like this: mm/bootmem.c: In function 'free_all_bootmem_core': mm/bootmem.c:237:32: error: 'cur' undeclared (first use in this function) __free_pages_bootmem(page++, cur++, 0); ^ Caused by commit "mm: page_alloc: pass PFN to __free_pages_bootmem". This only happens because CONFIG_NO_BOOTMEM is *not* set (it is set on powerpc, x86, arm and sparc64). Clearly it was never built for this config. :-( Reverting would be a real pain, so I added this (probably incorrect) patch to make it build: From: Stephen Rothwell Date: Fri, 1 May 2015 14:21:08 +1000 Subject: [PATCH] mm: page_alloc: pass PFN to __free_pages_bootmem fix Signed-off-by: Stephen Rothwell --- mm/bootmem.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/bootmem.c b/mm/bootmem.c index daf956bb4782..0a0eb62b1c92 100644 --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -173,6 +173,7 @@ 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 cur; if (!bdata->node_bootmem_map) return 0; @@ -214,7 +215,7 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata) 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) { @@ -233,6 +234,7 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata) pages = bdata->node_low_pfn - bdata->node_min_pfn; pages = bootmem_bootmap_pages(pages); count += pages; + cur = bdata->node_min_pfn; while (pages--) __free_pages_bootmem(page++, cur++, 0); -- 2.1.4 -- Cheers, Stephen Rothwell sfr@canb.auug.org.au