Nick Piggin 8519fb30e4 [PATCH] mm: compound release fix ...

Compound pages on SMP systems can now often be freed from pagetables via
the release_pages path.  This uses put_page_testzero which does not handle
compound pages at all.  Releasing constituent pages from process mappings
decrements their count to a large negative number and leaks the reference
at the head page - net result is a memory leak.

The problem was hidden because the debug check in put_page_testzero itself
actually did take compound pages into consideration.

Fix the bug and the debug check.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2006-02-07 16:12:33 -08:00

..

bootmem.c

[PATCH] FRV: Clean up bootmem allocator's page freeing algorithm

2006-01-06 08:33:26 -08:00

fadvise.c

[PATCH] fadvise: return ESPIPE on FIFO/pipe

2006-01-08 20:14:00 -08:00

filemap_xip.c

[PATCH] replace inode_update_time with file_update_time

2006-01-10 08:01:30 -08:00

filemap.c

[PATCH] mm: migration page refcounting fix

2006-01-18 19:20:17 -08:00

filemap.h

[PATCH] xip: reduce code duplication

2005-06-24 00:06:41 -07:00

fremap.c

VM: add common helper function to create the page tables

2005-11-29 14:03:14 -08:00

highmem.c

[PATCH] gfp_t: the rest

2005-10-28 08:16:51 -07:00

hugetlb.c

[PATCH] hugetlbpage: return VM_FAULT_OOM on oom

2006-02-07 16:12:31 -08:00

internal.h

[PATCH] FRV: Clean up bootmem allocator's page freeing algorithm

2006-01-06 08:33:26 -08:00

Kconfig

[PATCH] Swap Migration V5: Add CONFIG_MIGRATION for page migration support

2006-01-08 20:12:41 -08:00

madvise.c

[PATCH] madvise(MADV_REMOVE): remove pages from tmpfs shm backing store

2006-01-06 08:33:22 -08:00

Makefile

[PATCH] slob: introduce the SLOB allocator

2006-01-08 20:13:41 -08:00

memory_hotplug.c

[PATCH] memhotplug: __add_section remove unused pgdat definition

2006-01-06 08:33:21 -08:00

memory.c

[PATCH] Direct Migration V9: PageSwapCache checks

2006-02-01 08:53:16 -08:00

mempolicy.c

[PATCH] x86_64: Fix memory policy build without CONFIG_HUGETLBFS

2006-02-04 16:43:14 -08:00

mempool.c

[PATCH] gfp_t: mm/* (easy parts)

2005-10-28 08:16:47 -07:00

mincore.c

[PATCH] freepgt: sys_mincore ignore FIRST_USER_PGD_NR

2005-04-19 13:29:20 -07:00

mlock.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

mmap.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

mprotect.c

[PATCH] unpaged: private write VM_RESERVED

2005-11-22 09:13:42 -08:00

mremap.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

msync.c

[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem

2006-01-09 15:59:24 -08:00

nommu.c

[PATCH] NOMMU: Make SYSV IPC SHM use ramfs facilities on NOMMU

2006-01-06 08:33:32 -08:00

oom_kill.c

[PATCH] dump_stack() in oom handler

2006-02-01 08:53:18 -08:00

page_alloc.c

[PATCH] percpu data: only iterate over possible CPUs

2006-02-05 11:06:51 -08:00

page_io.c

[PATCH] mm: split page table lock

2005-10-29 21:40:42 -07:00

page-writeback.c

[PATCH] mm: dirty_exceeded speedup

2006-01-18 19:20:17 -08:00

pdflush.c

[PATCH] Swap Migration V5: PF_SWAPWRITE to allow writing to swap

2006-01-08 20:12:41 -08:00

prio_tree.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

readahead.c

[PATCH] add AOP_TRUNCATED_PAGE, prepend AOP_ to WRITEPAGE_ACTIVATE

2006-01-03 11:45:42 -08:00

rmap.c

[PATCH] Direct Migration V9: Avoid writeback / page_migrate() method

2006-02-01 08:53:17 -08:00

shmem.c

[PATCH] Direct Migration V9: PageSwapCache checks

2006-02-01 08:53:16 -08:00

slab.c

mm/slab.c (non-NUMA): Fix compile warning and clean up code

2006-02-05 11:26:38 -08:00

slob.c

[PATCH] slob: introduce the SLOB allocator

2006-01-08 20:13:41 -08:00

sparse.c

[PATCH] Change maxaligned_in_smp alignemnt macros to internodealigned_in_smp macros

2006-01-08 20:13:38 -08:00

swap_state.c

[PATCH] Direct Migration V9: Avoid writeback / page_migrate() method

2006-02-01 08:53:17 -08:00

swap.c

[PATCH] mm: compound release fix

2006-02-07 16:12:33 -08:00

swapfile.c

[PATCH] Direct Migration V9: remove_from_swap() to remove swap ptes

2006-02-01 08:53:16 -08:00

thrash.c

[PATCH] temporarily disable swap token on memory pressure

2005-11-28 14:42:25 -08:00

tiny-shmem.c

[PATCH] do_truncate() call fix in tiny-shmem.c

2006-01-12 09:08:49 -08:00

truncate.c

[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem

2006-01-09 15:59:24 -08:00

util.c

[PATCH] slob: introduce mm/util.c for shared functions

2006-01-08 20:13:41 -08:00

vmalloc.c

[PATCH] kernel-doc: fix warnings in vmalloc.c

2005-11-07 07:53:56 -08:00

vmscan.c

[PATCH] Direct Migration V9: Avoid writeback / page_migrate() method

2006-02-01 08:53:17 -08:00