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
vfs: kill write_super and sync_supers
2012-08-04 01:24:44 +04:00
bootmem: make ___alloc_bootmem_node_nopanic() really nopanic
2012-07-17 16:21:29 -07:00
bounce: allow use of bounce pool via config option
2012-07-18 16:40:35 -04:00
->encode_fh() API change
2012-05-29 23:28:33 -04:00
mm: compaction: Abort async compaction if locks are contended or taking too long
2012-08-21 16:45:03 -07:00
mm, x86: Remove debug_pagealloc_enabled
2011-12-06 09:24:07 +01:00
mm: fix implicit stat.h usage in dmapool.c
2011-10-31 09:20:12 -04:00
mm, fadvise: don't return -EINVAL when filesystem cannot implement fadvise()
2012-07-31 18:42:42 -07:00
switch debugfs to umode_t
2012-01-03 22:54:56 -05:00
block: move down direct IO plugging
2012-08-09 15:23:09 +02:00
fs: Protect write paths by sb_start_write - sb_end_write
2012-07-31 09:45:47 +04:00
mm: delete various needless include <linux/module.h>
2011-10-31 09:20:11 -04:00
mm/frontswap: cleanup doc and comment error
2012-07-23 11:16:20 -04:00
mm: add support for direct_IO to highmem pages
2012-07-31 18:42:47 -07:00
mm/memcg: apply add/del_page to lruvec
2012-05-29 16:22:28 -07:00
mm: hugetlbfs: close race during teardown of hugetlbfs shared page tables
2012-07-31 18:42:50 -07:00
hugetlb/cgroup: remove exclude and wakeup rmdir calls from migrate
2012-07-31 18:42:41 -07:00
memcg: rename config variables
2012-07-31 18:42:43 -07:00
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
mm: compaction: Abort async compaction if locks are contended or taking too long
2012-08-21 16:45:03 -07:00
mm: factor out memory isolate functions
2012-07-31 18:42:45 -07:00
mm: more intensive memory corruption debugging
2012-01-10 16:30:42 -08:00
kmemcheck: Fix build errors due to missing slab.h
2010-03-30 22:02:32 +09:00
kmemleak: remove memset by using kzalloc
2011-01-27 18:31:51 +00:00
kmemleak: Disable early logging when kmemleak is off by default
2012-01-20 16:57:05 +00:00
ksm: cleanup: introduce find_mergeable_vma()
2012-03-21 17:54:59 -07:00
mm: Map most files to use export.h instead of module.h
2011-10-31 09:20:12 -04:00
mm: Hold a file reference in madvise_remove
2012-07-06 10:34:38 -07:00
mm: factor out memory isolate functions
2012-07-31 18:42:45 -07:00
mm/memblock: Use NULL instead of 0 for pointers
2012-09-05 08:32:30 +02:00
memcg: add mem_cgroup_from_css() helper
2012-07-31 18:42:49 -07:00
memcg: rename config variables
2012-07-31 18:42:43 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-08-01 10:26:23 -07:00
memory hotplug: fix section info double registration bug
2012-09-17 15:00:38 -07:00
Remove user-triggerable BUG from mpol_to_str
2012-09-06 09:37:58 -07:00
mempool: add @gfp_mask to mempool_create_node()
2012-06-25 11:53:47 +02:00
mm: memcg: fix compaction/migration failing due to memcg limits
2012-07-31 18:42:48 -07:00
mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode
2012-03-21 17:54:54 -07:00
vm: avoid using find_vma_prev() unnecessarily
2012-03-06 18:23:36 -08:00
mm: Map most files to use export.h instead of module.h
2011-10-31 09:20:12 -04:00
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
mm, counters: remove task argument to sync_mm_rss() and __sync_task_rss_stat()
2012-03-21 17:54:59 -07:00
mm: mmu_notifier: fix freed page still mapped in secondary MMU
2012-07-31 18:42:49 -07:00
memcg: rename config variables
2012-07-31 18:42:43 -07:00
Merge branch 'akpm' (Andrew's patch-bomb)
2012-03-22 09:04:48 -07:00
mm: account the total_vm in the vm_stat_account()
2012-07-31 18:42:39 -07:00
sanitize vfs_fsync calling conventions
2010-05-21 18:31:21 -04:00
memblock: free allocated memblock_reserved_regions later
2012-07-11 16:04:50 -07:00
nommu: fix compilation of nommu.c
2012-06-04 17:17:31 -04:00
mm, memcg: move all oom handling to memcontrol.c
2012-07-31 18:42:45 -07:00
vfs: kill write_super and sync_supers
2012-08-04 01:24:44 +04:00
mm/page_alloc: fix the page address of higher page's buddy calculation
2012-09-17 15:00:38 -07:00
memcg: rename config variables
2012-07-31 18:42:43 -07:00
mm: add support for direct_IO to highmem pages
2012-07-31 18:42:47 -07:00
memory-hotplug: fix kswapd looping forever problem
2012-07-31 18:42:45 -07:00
mm: fix kernel-doc warnings
2012-06-20 14:39:36 -07:00
percpu: clear memory allocated with the km allocator
2010-10-02 10:28:42 +03:00
mm: fix kernel-doc warnings
2012-06-20 14:39:36 -07:00
kmemleak: Fix the kmemleak tracking of the percpu areas with !SMP
2012-05-09 10:13:29 -07:00
arch/tile: allow building Linux with transparent huge pages enabled
2012-05-25 12:48:21 -04:00
sanitize <linux/prefetch.h> usage
2011-05-20 12:50:29 -07:00
aio/vfs: cleanup of rw_copy_check_uvector() and compat_rw_copy_check_uvector()
2012-05-31 17:49:32 -07:00
mm: delete various needless include <linux/module.h>
2011-10-31 09:20:11 -04:00
mm: move readahead syscall to mm/readahead.c
2012-05-29 16:22:23 -07:00
mm: remove swap token code
2012-05-29 16:22:19 -07:00
tmpfs: distribute interleave better across nodes
2012-07-31 18:42:50 -07:00
slab: fix starting index for finding another object
2012-09-17 15:00:38 -07:00
mm, sl[aou]b: Use a common mutex definition
2012-07-09 12:13:41 +03:00
mm: Fix build warning in kmem_cache_create()
2012-07-30 13:15:40 +03:00
slob: Fix early boot kernel crash
2012-07-12 10:13:22 +03:00
slub: consider pfmemalloc_match() in get_partial_node()
2012-09-17 15:00:38 -07:00
mm: delete various needless include <linux/module.h>
2011-10-31 09:20:11 -04:00
mm/sparse: remove index_init_lock
2012-07-31 18:42:49 -07:00
mm: add support for direct_IO to highmem pages
2012-07-31 18:42:47 -07:00
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
mm: swapfile: clean up unuse_pte race handling
2012-07-31 18:42:48 -07:00
mm/fs: remove truncate_range
2012-05-29 16:22:23 -07:00
new helper: vm_mmap_pgoff()
2012-06-01 10:37:18 -04:00
mm: make vb_alloc() more foolproof
2012-07-31 18:42:39 -07:00
memory hotplug: reset pgdat->kswapd to NULL if creating kernel thread fails
2012-09-17 15:00:37 -07:00
mm: account for the number of times direct reclaimers get throttled
2012-07-31 18:42:46 -07:00
f14851af0e