qiuxishi f14851af0e memory hotplug: fix section info double registration bug ... There may be a bug when registering section info. For example, on my Itanium platform, the pfn range of node0 includes the other nodes, so other nodes' section info will be double registered, and memmap's page count will equal to 3. node0: start_pfn=0x100, spanned_pfn=0x20fb00, present_pfn=0x7f8a3, => 0x000100-0x20fc00 node1: start_pfn=0x80000, spanned_pfn=0x80000, present_pfn=0x80000, => 0x080000-0x100000 node2: start_pfn=0x100000, spanned_pfn=0x80000, present_pfn=0x80000, => 0x100000-0x180000 node3: start_pfn=0x180000, spanned_pfn=0x80000, present_pfn=0x80000, => 0x180000-0x200000 free_all_bootmem_node() register_page_bootmem_info_node() register_page_bootmem_info_section() When hot remove memory, we can't free the memmap's page because page_count() is 2 after put_page_bootmem(). sparse_remove_one_section() free_section_usemap() free_map_bootmem() put_page_bootmem() [akpm@linux-foundation.org: add code comment] Signed-off-by: Xishi Qiu <qiuxishi@huawei.com> Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Acked-by: Mel Gorman <mgorman@suse.de> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-09-17 15:00:38 -07:00
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backing-dev.c
bootmem.c
bounce.c
cleancache.c
compaction.c	mm: compaction: Abort async compaction if locks are contended or taking too long	2012-08-21 16:45:03 -07:00
debug-pagealloc.c
dmapool.c
fadvise.c
failslab.c
filemap_xip.c
filemap.c
fremap.c
frontswap.c
highmem.c
huge_memory.c
hugetlb_cgroup.c
hugetlb.c
hwpoison-inject.c
init-mm.c
internal.h	mm: compaction: Abort async compaction if locks are contended or taking too long	2012-08-21 16:45:03 -07:00
Kconfig
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c
maccess.c
madvise.c
Makefile
memblock.c	mm/memblock: Use NULL instead of 0 for pointers	2012-09-05 08:32:30 +02:00
memcontrol.c
memory_hotplug.c	memory hotplug: fix section info double registration bug	2012-09-17 15:00:38 -07:00
memory-failure.c
memory.c
mempolicy.c	Remove user-triggerable BUG from mpol_to_str	2012-09-06 09:37:58 -07:00
mempool.c
migrate.c
mincore.c
mlock.c
mm_init.c
mmap.c	Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-08-23 21:48:41 -07:00
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
msync.c
nobootmem.c
nommu.c
oom_kill.c
page_alloc.c	mm/page_alloc: fix the page address of higher page's buddy calculation	2012-09-17 15:00:38 -07:00
page_cgroup.c
page_io.c
page_isolation.c
page-writeback.c
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c
pgtable-generic.c
prio_tree.c
process_vm_access.c
quicklist.c
readahead.c
rmap.c
shmem.c
slab_common.c
slab.c	slab: fix starting index for finding another object	2012-09-17 15:00:38 -07:00
slab.h
slob.c
slub.c	slub: consider pfmemalloc_match() in get_partial_node()	2012-09-17 15:00:38 -07:00
sparse-vmemmap.c
sparse.c
swap_state.c
swap.c
swapfile.c
truncate.c
util.c
vmalloc.c
vmscan.c	memory hotplug: reset pgdat->kswapd to NULL if creating kernel thread fails	2012-09-17 15:00:37 -07:00
vmstat.c