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911891afe1
linux/mm
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Xiao Guangrong 911891afe1 thp: move khugepaged_mutex out of khugepaged 
Currently, hugepaged_mutex is used really complexly and hard to
understand, actually, it is just used to serialize start_khugepaged and
khugepaged for these reasons:

- khugepaged_thread is shared between them
- the thp disable path (echo never > transparent_hugepage/enabled) is
  nonblocking, so we need to protect khugepaged_thread to get a stable
  running state

These can be avoided by:

- use the lock to serialize the thread creation and cancel
- thp disable path can not finised until the thread exits

Then khugepaged_thread is fully controlled by start_khugepaged, khugepaged
will be happy without the lock

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-09 16:22:25 +09:00
..
backing-dev.c vfs: kill write_super and sync_supers 2012-08-04 01:24:44 +04:00
bootmem.c bootmem: Fix the short description of reserve_bootmem() 2012-08-27 07:57:21 -07:00
bounce.c bounce: allow use of bounce pool via config option 2012-07-18 16:40:35 -04:00
cleancache.c
compaction.c mm: compaction: capture a suitable high-order page immediately when it is made available 2012-10-09 16:22:21 +09:00
debug-pagealloc.c
dmapool.c
fadvise.c switch simple cases of fget_light to fdget 2012-09-26 22:20:08 -04:00
failslab.c
filemap_xip.c mm: kill vma flag VM_CAN_NONLINEAR 2012-10-09 16:22:17 +09:00
filemap.c mm: kill vma flag VM_CAN_NONLINEAR 2012-10-09 16:22:17 +09:00
fremap.c mm: kill vma flag VM_CAN_NONLINEAR 2012-10-09 16:22:17 +09:00
frontswap.c frontswap: support exclusive gets if tmem backend is capable 2012-09-21 10:38:12 -04:00
highmem.c mm: add support for direct_IO to highmem pages 2012-07-31 18:42:47 -07:00
huge_memory.c thp: move khugepaged_mutex out of khugepaged 2012-10-09 16:22:25 +09:00
hugetlb_cgroup.c hugetlb/cgroup: remove exclude and wakeup rmdir calls from migrate 2012-07-31 18:42:41 -07:00
hugetlb.c mm: hugetlb: add arch hook for clearing page flags before entering pool 2012-10-09 16:22:24 +09:00
hwpoison-inject.c memcg: rename config variables 2012-07-31 18:42:43 -07:00
init-mm.c
internal.h mm: adjust final #endif position in mm/internal.h 2012-10-09 16:22:24 +09:00
Kconfig mm: factor out memory isolate functions 2012-07-31 18:42:45 -07:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c kmemleak: Replace list_for_each_continue_rcu with new interface 2012-09-23 07:42:52 -07:00
ksm.c mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
maccess.c
madvise.c mm: prepare VM_DONTDUMP for using in drivers 2012-10-09 16:22:18 +09:00
Makefile mm: factor out memory isolate functions 2012-07-31 18:42:45 -07:00
memblock.c mm/memblock: Use NULL instead of 0 for pointers 2012-09-05 08:32:30 +02:00
memcontrol.c cgroup: mark subsystems with broken hierarchy support and whine if cgroups are nested for them 2012-09-14 12:01:16 -07:00
memory_hotplug.c memory hotplug: fix section info double registration bug 2012-09-17 15:00:38 -07:00
memory-failure.c memcg: rename config variables 2012-07-31 18:42:43 -07:00
memory.c mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
mempolicy.c mempolicy: fix a memory corruption by refcount imbalance in alloc_pages_vma() 2012-10-09 16:22:22 +09:00
mempool.c mempool: add @gfp_mask to mempool_create_node() 2012-06-25 11:53:47 +02:00
migrate.c mm: memcg: fix compaction/migration failing due to memcg limits 2012-07-31 18:42:48 -07:00
mincore.c
mlock.c mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
mm_init.c
mmap.c mm/mmap.c: replace find_vma_prepare() with clearer find_vma_links() 2012-10-09 16:22:20 +09:00
mmu_context.c
mmu_notifier.c mm/mmu_notifier: init notifier if necessary 2012-10-09 16:22:23 +09:00
mmzone.c memcg: rename config variables 2012-07-31 18:42:43 -07:00
mprotect.c
mremap.c mm: account the total_vm in the vm_stat_account() 2012-07-31 18:42:39 -07:00
msync.c
nobootmem.c memblock: free allocated memblock_reserved_regions later 2012-07-11 16:04:50 -07:00
nommu.c mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
oom_kill.c oom: remove deprecated oom_adj 2012-10-09 16:22:24 +09:00
page_alloc.c mm: compaction: capture a suitable high-order page immediately when it is made available 2012-10-09 16:22:21 +09:00
page_cgroup.c memcg: rename config variables 2012-07-31 18:42:43 -07:00
page_io.c mm: add support for direct_IO to highmem pages 2012-07-31 18:42:47 -07:00
page_isolation.c memory-hotplug: fix kswapd looping forever problem 2012-07-31 18:42:45 -07:00
page-writeback.c vfs: kill write_super and sync_supers 2012-08-04 01:24:44 +04:00
pagewalk.c mm: fix kernel-doc warnings 2012-06-20 14:39:36 -07:00
percpu-km.c
percpu-vm.c mm: fix kernel-doc warnings 2012-06-20 14:39:36 -07:00
percpu.c sections: fix section conflicts in mm/percpu.c 2012-10-06 03:04:44 +09:00
pgtable-generic.c
prio_tree.c
process_vm_access.c
quicklist.c
readahead.c switch simple cases of fget_light to fdget 2012-09-26 22:20:08 -04:00
rmap.c
shmem.c mm: kill vma flag VM_CAN_NONLINEAR 2012-10-09 16:22:17 +09:00
slab_common.c Revert "mm/sl[aou]b: Move sysfs_slab_add to common" 2012-09-05 12:07:44 +03:00
slab.c Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux 2012-10-07 07:53:13 +09:00
slab.h Revert "mm/sl[aou]b: Move sysfs_slab_add to common" 2012-09-05 12:07:44 +03:00
slob.c Merge branch 'slab/tracing' into slab/for-linus 2012-10-03 09:57:17 +03:00
slub.c Merge branch 'slab/common-for-cgroups' into slab/for-linus 2012-10-03 09:56:37 +03:00
sparse-vmemmap.c
sparse.c mm/sparse: remove index_init_lock 2012-07-31 18:42:49 -07:00
swap_state.c 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
swap.c mm: fix nonuniform page status when writing new file with small buffer 2012-10-09 16:22:19 +09:00
swapfile.c mm: swapfile: clean up unuse_pte race handling 2012-07-31 18:42:48 -07:00
truncate.c
util.c mm: Use __do_krealloc to do the krealloc job 2012-09-04 10:22:58 +03:00
vmalloc.c mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
vmscan.c mm/vmscan: fix error number for failed kthread 2012-10-09 16:22:24 +09:00
vmstat.c workqueue: make deferrable delayed_work initializer names consistent 2012-08-21 13:18:23 -07:00