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

…

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

…

fremap.c

…

highmem.c

…

hugetlb.c

[PATCH] hugetlbpage: return VM_FAULT_OOM on oom

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

internal.h

…

Kconfig

…

madvise.c

…

Makefile

…

memory_hotplug.c

…

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

…

mincore.c

…

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

…

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

…

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

…

page-writeback.c

[PATCH] mm: dirty_exceeded speedup

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

pdflush.c

…

prio_tree.c

…

readahead.c

…

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

…

sparse.c

…

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

…

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

…

vmalloc.c

…

vmscan.c

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

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