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cdc27c2784
linux/arch/x86/mm
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Kirill A. Shutemov c283610e44 x86, mm: do not leak page->ptl for pmd page tables 
There are two code paths how page with pmd page table can be freed:
pmd_free() and pmd_free_tlb().

I've missed the second one and didn't add page table destructor call
there.  It leads to leak of page->ptl for pmd page tables, if
dynamically allocated page->ptl is in use.

The patch adds the missed destructor and modifies documentation
accordingly.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Andrey Vagin <avagin@openvz.org>
Tested-by: Andrey Vagin <avagin@openvz.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-21 16:42:28 -08:00
..
kmemcheck bug.h: add include of it to various implicit C users 2012-02-29 17:15:08 -05:00
amdtopology.c x86/mm/numa: Simplify some bit mangling 2013-04-10 19:06:26 +02:00
dump_pagetables.c
extable.c x86, extable: Switch to relative exception table entries 2012-04-20 17:22:34 -07:00
fault.c Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-11-14 16:55:56 +09:00
gup.c thp: add compound tail page _mapcount when mapped 2011-12-09 07:50:28 -08:00
highmem_32.c mm: accurately calculate zone->managed_pages for highmem zones 2013-07-03 16:07:33 -07:00
hugetlbpage.c mm: migrate: check movability of hugepage in unmap_and_move_huge_page() 2013-09-11 15:57:49 -07:00
init_32.c mm/x86: prepare for removing num_physpages and simplify mem_init() 2013-07-03 16:07:38 -07:00
init_64.c mm/x86: prepare for removing num_physpages and simplify mem_init() 2013-07-03 16:07:38 -07:00
init.c arch/x86/mm/init.c: fix incorrect function name in alloc_low_pages() 2013-11-13 12:09:11 +09:00
iomap_32.c
ioremap.c mm: Remove unused variable idx0 in __early_ioremap() 2013-08-13 11:46:36 +02:00
kmmio.c
Makefile x86, trace: Add page fault tracepoints 2013-11-08 14:15:49 -08:00
memtest.c x86/memtest: Shorten time for tests 2013-02-18 09:28:42 +01:00
mm_internal.h x86, mm: Move after_bootmem to mm_internel.h 2012-11-17 11:59:45 -08:00
mmap.c x86 get_unmapped_area: Access mmap_legacy_base through mm_struct member 2013-08-22 10:19:35 -07:00
mmio-mod.c x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
numa_32.c mm/x86: prepare for removing num_physpages and simplify mem_init() 2013-07-03 16:07:38 -07:00
numa_64.c x86, mm: kill numa_free_all_bootmem() 2012-11-17 11:59:47 -08:00
numa_emulation.c x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
numa_internal.h x86-32, mm: Rip out x86_32 NUMA remapping code 2013-01-31 14:12:30 -08:00
numa.c mem-hotplug: introduce movable_node boot option 2013-11-13 12:09:09 +09:00
pageattr-test.c x86: rename random32() to prandom_u32() 2013-04-29 18:28:42 -07:00
pageattr.c Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-04-30 08:40:35 -07:00
pat_internal.h
pat_rbtree.c rbtree: move augmented rbtree functionality to rbtree_augmented.h 2012-10-09 16:22:40 +09:00
pat.c x86: Do not try to sync identity map for non-mapped pages 2013-03-07 13:23:28 -08:00
pf_in.c x86: Eliminate various 'set but not used' warnings 2011-05-21 19:10:33 +02:00
pf_in.h
pgtable_32.c Disintegrate asm/system.h for X86 2012-03-28 18:11:12 +01:00
pgtable.c x86, mm: do not leak page->ptl for pmd page tables 2013-11-21 16:42:28 -08:00
physaddr.c x86, mm: Make DEBUG_VIRTUAL work earlier in boot 2013-01-25 16:33:22 -08:00
physaddr.h
setup_nx.c x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
srat.c ACPI / x86: Print Hot-Pluggable Field in SRAT. 2013-08-14 23:24:01 +02:00
testmmiotrace.c
tlb.c mm: vmstats: track TLB flush stats on UP too 2013-09-11 15:57:09 -07:00