From: Johannes Weiner Since alloc_bootmem_core does no goal-fallback anymore and just returns NULL if the allocation fails, we might now use it in alloc_bootmem_section without all the fixup code for a misplaced allocation. Also, the limit can be the first PFN of the next section as the semantics is that the limit is _above_ the allocated region, not within. Signed-off-by: Johannes Weiner Cc: Yasunori Goto Signed-off-by: Andrew Morton --- mm/bootmem.c | 27 ++++++--------------------- 1 file changed, 6 insertions(+), 21 deletions(-) diff -puN mm/bootmem.c~bootmem-revisit-alloc_bootmem_section mm/bootmem.c --- a/mm/bootmem.c~bootmem-revisit-alloc_bootmem_section +++ a/mm/bootmem.c @@ -632,30 +632,15 @@ void * __init __alloc_bootmem_node(pg_da void * __init alloc_bootmem_section(unsigned long size, unsigned long section_nr) { - void *ptr; - unsigned long limit, goal, start_nr, end_nr, pfn; - struct pglist_data *pgdat; + bootmem_data_t *bdata; + unsigned long pfn, goal, limit; pfn = section_nr_to_pfn(section_nr); - goal = PFN_PHYS(pfn); - limit = PFN_PHYS(section_nr_to_pfn(section_nr + 1)) - 1; - pgdat = NODE_DATA(early_pfn_to_nid(pfn)); - ptr = alloc_bootmem_core(pgdat->bdata, size, SMP_CACHE_BYTES, goal, - limit); - - if (!ptr) - return NULL; - - start_nr = pfn_to_section_nr(PFN_DOWN(__pa(ptr))); - end_nr = pfn_to_section_nr(PFN_DOWN(__pa(ptr) + size)); - if (start_nr != section_nr || end_nr != section_nr) { - printk(KERN_WARNING "alloc_bootmem failed on section %ld.\n", - section_nr); - free_bootmem_node(pgdat, __pa(ptr), size); - ptr = NULL; - } + goal = pfn << PAGE_SHIFT; + limit = section_nr_to_pfn(section_nr + 1) << PAGE_SHIFT; + bdata = &bootmem_node_data[early_pfn_to_nid(pfn)]; - return ptr; + return alloc_bootmem_core(bdata, size, SMP_CACHE_BYTES, goal, limit); } #endif _