Christoph Lameter 8255012e8b slub: Avoid use of slub_lock in show_slab_objects() ...

commit 04d94879c8a4973b5499dc26b9d38acee8928791 upstream.

The purpose of the locking is to prevent removal and additions
of nodes when statistics are gathered for a slab cache. So we
need to avoid racing with memory hotplug functionality.

It is enough to take the memory hotplug locks there instead
of the slub_lock.

online_pages() currently does not acquire the memory_hotplug
lock. Another patch will be submitted by the memory hotplug
authors to take the memory hotplug lock and describe the
uses of the memory hotplug lock to protect against
adding and removal of nodes from non hotplug data structures.

Reported-and-tested-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2011-02-17 15:14:37 -08:00

..

backing-dev.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

2010-10-26 17:58:44 -07:00

bootmem.c

x86, memblock: Replace e820_/_early string with memblock_

2010-08-27 11:13:47 -07:00

bounce.c

bounce: call flush_dcache_page() after bounce_copy_vec()

2010-09-09 18:57:25 -07:00

compaction.c

mm/compaction.c: avoid double mem_cgroup_del_lru()

2010-12-22 19:43:33 -08:00

debug-pagealloc.c

generic debug pagealloc

2009-04-01 08:59:13 -07:00

dmapool.c

mm: add a might_sleep_if() to dma_pool_alloc()

2010-10-26 16:52:08 -07:00

fadvise.c

readahead: introduce FMODE_RANDOM for POSIX_FADV_RANDOM

2010-03-06 11:26:25 -08:00

failslab.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

filemap_xip.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

filemap.c

Call the filesystem back whenever a page is removed from the page cache

2010-12-02 09:55:21 -05:00

fremap.c

Avoid pgoff overflow in remap_file_pages

2010-09-25 09:34:58 -07:00

highmem.c

mm,x86: fix kmap_atomic_push vs ioremap_32.c

2010-10-27 18:03:05 -07:00

hugetlb.c

mm/hugetlb.c: avoid double unlock_page() in hugetlb_fault()

2010-12-02 14:51:14 -08:00

hwpoison-inject.c

HWPOISON, hugetlb: support hwpoison injection for hugepage

2010-08-11 09:23:11 +02:00

init-mm.c

mm: provide init_mm mm_context initializer

2010-08-09 20:44:54 -07:00

internal.h

mm: fix is_mem_section_removable() page_order BUG_ON check

2010-10-26 16:52:11 -07:00

Kconfig

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2010-10-22 17:31:36 -07:00

Kconfig.debug

trivial: improve help text for mm debug config options

2009-09-21 15:14:57 +02:00

kmemcheck.c

kmemcheck: Fix build errors due to missing slab.h

2010-03-30 22:02:32 +09:00

kmemleak-test.c

percpu: clean up percpu variable definitions

2009-06-24 15:13:48 +09:00

kmemleak.c

kmemleak: Fix typo in the comment

2010-08-08 21:57:23 +01:00

ksm.c

ksm: annotate ksm_thread_mutex is no deadlock source

2010-12-02 14:51:15 -08:00

maccess.c

MN10300: Save frame pointer in thread_info struct rather than global var

2010-10-27 17:29:01 +01:00

madvise.c

HWPOISON: Add a madvise() injector for soft page offlining

2009-12-16 12:20:00 +01:00

Makefile

percpu: use percpu allocator on UP too

2010-10-02 10:26:05 +03:00

memblock.c

memblock: Annotate memblock functions with __init_memblock

2010-10-11 16:00:52 -07:00

memcontrol.c

memcg: fix account leak at failure of memsw acconting

2011-02-17 15:14:36 -08:00

memory_hotplug.c

mem-hotplug: introduce {un}lock_memory_hotplug()

2010-12-02 14:51:15 -08:00

memory-failure.c

mem-hotplug: introduce {un}lock_memory_hotplug()

2010-12-02 14:51:15 -08:00

memory.c

use clear_page()/copy_page() in favor of memset()/memcpy() on whole pages

2010-10-26 16:52:13 -07:00

mempolicy.c

mm/mempolicy.c: add rcu read lock to protect pid structure

2010-12-02 14:51:14 -08:00

mempool.c

mm: remove broken 'kzalloc' mempool

2009-09-22 07:17:35 -07:00

migrate.c

mm: fix hugepage migration

2011-02-17 15:14:18 -08:00

mincore.c

mincore: do nested page table walks

2010-05-25 08:06:58 -07:00

mlock.c

mm: Move vma_stack_continue into mm.h

2010-09-09 09:05:06 -07:00

mm_init.c

…

mmap.c

install_special_mapping skips security_file_mmap check.

2010-12-15 12:30:36 -08:00

mmu_context.c

exit: fix oops in sync_mm_rss

2010-03-24 16:31:21 -07:00

mmu_notifier.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

mmzone.c

mm: page allocator: calculate a better estimate of NR_FREE_PAGES when memory is low and kswapd is awake

2010-09-09 18:57:25 -07:00

mprotect.c

perf_events: Fix perf_counter_mmap() hook in mprotect()

2010-11-09 10:19:38 -08:00

mremap.c

mm: remove pte_*map_nested()

2010-10-26 16:52:08 -07:00

msync.c

sanitize vfs_fsync calling conventions

2010-05-21 18:31:21 -04:00

nommu.c

nommu: Provide stubbed alloc/free_vm_area() implementation.

2010-12-24 12:08:30 +09:00

oom_kill.c

oom: kill all threads sharing oom killed task's mm

2010-10-26 16:52:05 -07:00

page_alloc.c

PM / Hibernate: Fix memory corruption related to swap

2010-12-06 23:52:08 +01:00

page_cgroup.c

kmemleak: Annotate false positive in init_section_page_cgroup()

2010-07-19 11:54:14 +01:00

page_io.c

block: unify flags for struct bio and struct request

2010-08-07 18:20:39 +02:00

page_isolation.c

mm: page_isolation: codeclean fix comment and rm unneeded val init

2010-10-26 16:52:11 -07:00

page-writeback.c

writeback: do uninterruptible sleep in balance_dirty_pages()

2010-12-22 19:43:33 -08:00

pagewalk.c

mm: remove call to find_vma in pagewalk for non-hugetlbfs

2010-11-25 06:50:46 +09:00

percpu-km.c

percpu: clear memory allocated with the km allocator

2010-10-02 10:28:42 +03:00

percpu-vm.c

percpu: move vmalloc based chunk management into percpu-vm.c

2010-05-01 08:30:50 +02:00

percpu.c

percpu: print out alloc information with KERN_DEBUG instead of KERN_INFO

2010-12-22 14:19:14 +01:00

prio_tree.c

…

quicklist.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

readahead.c

readahead.c: fix comment

2010-05-25 08:07:00 -07:00

rmap.c

rmap: make anon_vma_chain_free() static

2010-10-26 16:52:10 -07:00

shmem.c

convert get_sb_nodev() users

2010-10-29 04:16:31 -04:00

slab.c

replace nested max/min macros with {max,min}3 macro

2010-10-26 16:52:12 -07:00

slob.c

slob: fix gfp flags for order-0 page allocations

2010-10-02 10:24:28 +03:00

slub.c

slub: Avoid use of slub_lock in show_slab_objects()

2011-02-17 15:14:37 -08:00

sparse-vmemmap.c

x86: Use memblock to replace early_res

2010-08-27 11:12:29 -07:00

sparse.c

sparsemem: on no vmemmap path put mem_map on node high too

2010-05-25 08:06:56 -07:00

swap_state.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

swap.c

fuse: use release_pages()

2010-10-27 18:03:17 -07:00

swapfile.c

/proc/swaps: support polling

2010-10-26 16:52:11 -07:00

thrash.c

mm: pass mm to grab_swap_token

2009-06-23 12:50:05 -07:00

truncate.c

Call the filesystem back whenever a page is removed from the page cache

2010-12-02 09:55:21 -05:00

util.c

export __get_user_pages_fast() function

2010-10-24 10:51:24 +02:00

vmalloc.c

vmalloc: eagerly clear ptes on vunmap

2010-12-02 14:51:15 -08:00

vmscan.c

Call the filesystem back whenever a page is removed from the page cache

2010-12-02 09:55:21 -05:00

vmstat.c

vmstat: fix dirty threshold ordering

2010-12-02 14:51:14 -08:00