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
..
backing-dev.c	vfs: kill write_super and sync_supers	2012-08-04 01:24:44 +04:00
bootmem.c	bootmem: make ___alloc_bootmem_node_nopanic() really nopanic	2012-07-17 16:21:29 -07:00
bounce.c	bounce: allow use of bounce pool via config option	2012-07-18 16:40:35 -04:00
cleancache.c	->encode_fh() API change	2012-05-29 23:28:33 -04:00
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	mm, x86: Remove debug_pagealloc_enabled	2011-12-06 09:24:07 +01:00
dmapool.c	mm: fix implicit stat.h usage in dmapool.c	2011-10-31 09:20:12 -04:00
fadvise.c	mm, fadvise: don't return -EINVAL when filesystem cannot implement fadvise()	2012-07-31 18:42:42 -07:00
failslab.c	switch debugfs to umode_t	2012-01-03 22:54:56 -05:00
filemap_xip.c	fs: Protect write paths by sb_start_write - sb_end_write	2012-07-31 09:45:47 +04:00
filemap.c	block: move down direct IO plugging	2012-08-09 15:23:09 +02:00
fremap.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
frontswap.c	mm/frontswap: cleanup doc and comment error	2012-07-23 11:16:20 -04:00
highmem.c	mm: add support for direct_IO to highmem pages	2012-07-31 18:42:47 -07:00
huge_memory.c	mm/memcg: apply add/del_page to lruvec	2012-05-29 16:22:28 -07:00
hugetlb_cgroup.c	hugetlb/cgroup: remove exclude and wakeup rmdir calls from migrate	2012-07-31 18:42:41 -07:00
hugetlb.c	mm: hugetlbfs: close race during teardown of hugetlbfs shared page tables	2012-07-31 18:42:50 -07:00
hwpoison-inject.c	memcg: rename config variables	2012-07-31 18:42:43 -07:00
init-mm.c	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
internal.h	mm: compaction: Abort async compaction if locks are contended or taking too long	2012-08-21 16:45:03 -07:00
Kconfig	mm: factor out memory isolate functions	2012-07-31 18:42:45 -07:00
Kconfig.debug	mm: more intensive memory corruption debugging	2012-01-10 16:30:42 -08:00
kmemcheck.c
kmemleak-test.c	kmemleak: remove memset by using kzalloc	2011-01-27 18:31:51 +00:00
kmemleak.c	kmemleak: Disable early logging when kmemleak is off by default	2012-01-20 16:57:05 +00:00
ksm.c	ksm: cleanup: introduce find_mergeable_vma()	2012-03-21 17:54:59 -07:00
maccess.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
madvise.c	mm: Hold a file reference in madvise_remove	2012-07-06 10:34:38 -07:00
Makefile	mm: factor out memory isolate functions	2012-07-31 18:42:45 -07:00
memblock.c	mm/memblock: Use NULL instead of 0 for pointers	2012-09-05 08:32:30 +02:00
memcontrol.c	memcg: add mem_cgroup_from_css() helper	2012-07-31 18:42:49 -07:00
memory_hotplug.c	memory hotplug: fix section info double registration bug	2012-09-17 15:00:38 -07:00
memory-failure.c	memcg: rename config variables	2012-07-31 18:42:43 -07:00
memory.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-08-01 10:26:23 -07:00
mempolicy.c	Remove user-triggerable BUG from mpol_to_str	2012-09-06 09:37:58 -07:00
mempool.c	mempool: add @gfp_mask to mempool_create_node()	2012-06-25 11:53:47 +02:00
migrate.c	mm: memcg: fix compaction/migration failing due to memcg limits	2012-07-31 18:42:48 -07:00
mincore.c	mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode	2012-03-21 17:54:54 -07:00
mlock.c	vm: avoid using find_vma_prev() unnecessarily	2012-03-06 18:23:36 -08:00
mm_init.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
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	mm, counters: remove task argument to sync_mm_rss() and __sync_task_rss_stat()	2012-03-21 17:54:59 -07:00
mmu_notifier.c	mm: mmu_notifier: fix freed page still mapped in secondary MMU	2012-07-31 18:42:49 -07:00
mmzone.c	memcg: rename config variables	2012-07-31 18:42:43 -07:00
mprotect.c	Merge branch 'akpm' (Andrew's patch-bomb)	2012-03-22 09:04:48 -07:00
mremap.c	mm: account the total_vm in the vm_stat_account()	2012-07-31 18:42:39 -07:00
msync.c
nobootmem.c	memblock: free allocated memblock_reserved_regions later	2012-07-11 16:04:50 -07:00
nommu.c	nommu: fix compilation of nommu.c	2012-06-04 17:17:31 -04:00
oom_kill.c	mm, memcg: move all oom handling to memcontrol.c	2012-07-31 18:42:45 -07:00
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	memcg: rename config variables	2012-07-31 18:42:43 -07:00
page_io.c	mm: add support for direct_IO to highmem pages	2012-07-31 18:42:47 -07:00
page_isolation.c	memory-hotplug: fix kswapd looping forever problem	2012-07-31 18:42:45 -07:00
page-writeback.c	vfs: kill write_super and sync_supers	2012-08-04 01:24:44 +04:00
pagewalk.c	mm: fix kernel-doc warnings	2012-06-20 14:39:36 -07:00
percpu-km.c	percpu: clear memory allocated with the km allocator	2010-10-02 10:28:42 +03:00
percpu-vm.c	mm: fix kernel-doc warnings	2012-06-20 14:39:36 -07:00
percpu.c	kmemleak: Fix the kmemleak tracking of the percpu areas with !SMP	2012-05-09 10:13:29 -07:00
pgtable-generic.c	arch/tile: allow building Linux with transparent huge pages enabled	2012-05-25 12:48:21 -04:00
prio_tree.c	sanitize <linux/prefetch.h> usage	2011-05-20 12:50:29 -07:00
process_vm_access.c	aio/vfs: cleanup of rw_copy_check_uvector() and compat_rw_copy_check_uvector()	2012-05-31 17:49:32 -07:00
quicklist.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
readahead.c	mm: move readahead syscall to mm/readahead.c	2012-05-29 16:22:23 -07:00
rmap.c	mm: remove swap token code	2012-05-29 16:22:19 -07:00
shmem.c	tmpfs: distribute interleave better across nodes	2012-07-31 18:42:50 -07:00
slab_common.c	mm: Fix build warning in kmem_cache_create()	2012-07-30 13:15:40 +03:00
slab.c	slab: fix starting index for finding another object	2012-09-17 15:00:38 -07:00
slab.h	mm, sl[aou]b: Use a common mutex definition	2012-07-09 12:13:41 +03:00
slob.c	slob: Fix early boot kernel crash	2012-07-12 10:13:22 +03:00
slub.c	slub: consider pfmemalloc_match() in get_partial_node()	2012-09-17 15:00:38 -07:00
sparse-vmemmap.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
sparse.c	mm/sparse: remove index_init_lock	2012-07-31 18:42:49 -07:00
swap_state.c	mm: add support for a filesystem to activate swap files and use direct_IO for writing swap pages	2012-07-31 18:42:47 -07:00
swap.c	mm: add support for direct_IO to highmem pages	2012-07-31 18:42:47 -07:00
swapfile.c	mm: swapfile: clean up unuse_pte race handling	2012-07-31 18:42:48 -07:00
truncate.c	mm/fs: remove truncate_range	2012-05-29 16:22:23 -07:00
util.c	new helper: vm_mmap_pgoff()	2012-06-01 10:37:18 -04:00
vmalloc.c	mm: make vb_alloc() more foolproof	2012-07-31 18:42:39 -07:00
vmscan.c	memory hotplug: reset pgdat->kswapd to NULL if creating kernel thread fails	2012-09-17 15:00:37 -07:00
vmstat.c	mm: account for the number of times direct reclaimers get throttled	2012-07-31 18:42:46 -07:00