Naoya Horiguchi c8721bbbdd mm: memory-hotplug: enable memory hotplug to handle hugepage ... Until now we can't offline memory blocks which contain hugepages because a hugepage is considered as an unmovable page. But now with this patch series, a hugepage has become movable, so by using hugepage migration we can offline such memory blocks. What's different from other users of hugepage migration is that we need to decompose all the hugepages inside the target memory block into free buddy pages after hugepage migration, because otherwise free hugepages remaining in the memory block intervene the memory offlining. For this reason we introduce new functions dissolve_free_huge_page() and dissolve_free_huge_pages(). Other than that, what this patch does is straightforwardly to add hugepage migration code, that is, adding hugepage code to the functions which scan over pfn and collect hugepages to be migrated, and adding a hugepage allocation function to alloc_migrate_target(). As for larger hugepages (1GB for x86_64), it's not easy to do hotremove over them because it's larger than memory block. So we now simply leave it to fail as it is. [yongjun_wei@trendmicro.com.cn: remove duplicated include] Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: Andi Kleen <ak@linux.intel.com> Cc: Hillf Danton <dhillf@gmail.com> Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Hugh Dickins <hughd@google.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Rik van Riel <riel@redhat.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-09-11 15:57:48 -07:00
..
backing-dev.c	backing-dev: convert class code to use dev_groups	2013-08-19 21:22:34 -07:00
balloon_compaction.c	mm: introduce a common interface for balloon pages mobility	2012-12-11 17:22:26 -08:00
bootmem.c	mm: kill free_all_bootmem_node()	2013-07-03 16:07:39 -07:00
bounce.c	Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block	2013-05-08 10:13:35 -07:00
cleancache.c	mm: cleancache: clean up cleancache_enabled	2013-04-30 17:04:01 -07:00
compaction.c	mm: add & use zone_end_pfn() and zone_spans_pfn()	2013-02-23 17:50:20 -08:00
debug-pagealloc.c	mm, x86: Remove debug_pagealloc_enabled	2011-12-06 09:24:07 +01:00
dmapool.c	dmapool: make DMAPOOL_DEBUG detect corruption of free marker	2012-12-11 17:22:24 -08:00
fadvise.c	teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long	2013-03-03 22:46:22 -05:00
failslab.c	switch debugfs to umode_t	2012-01-03 22:54:56 -05:00
filemap_xip.c	lift sb_start_write() out of ->write()	2013-04-09 14:12:56 -04:00
filemap.c	direct-io: Handle O_(D)SYNC AIO	2013-09-04 09:23:46 -04:00
fremap.c	mm: save soft-dirty bits on file pages	2013-08-13 17:57:48 -07:00
frontswap.c	frontswap: fix incorrect zeroing and allocation size for frontswap_map	2013-06-12 16:29:46 -07:00
highmem.c	Some nice cleanups, and even a patch my wife did as a "live" demo for	2012-12-20 08:37:05 -08:00
huge_memory.c	mm/huge_memory.c: fix potential NULL pointer dereference	2013-09-11 15:57:19 -07:00
hugetlb_cgroup.c	cgroup: pass around cgroup_subsys_state instead of cgroup in file methods	2013-08-08 20:11:24 -04:00
hugetlb.c	mm: memory-hotplug: enable memory hotplug to handle hugepage	2013-09-11 15:57:48 -07:00
hwpoison-inject.c	memcg: rename config variables	2012-07-31 18:42:43 -07:00
init-mm.c	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
internal.h	mm: remove unused __put_page()	2013-07-09 10:33:22 -07:00
interval_tree.c	mm: add CONFIG_DEBUG_VM_RB build option	2012-10-09 16:22:42 +09:00
Kconfig	Merge remote-tracking branch 'origin/next' into kvm-ppc-next	2013-08-29 00:41:59 +02:00
Kconfig.debug	mm: more intensive memory corruption debugging	2012-01-10 16:30:42 -08:00
kmemcheck.c
kmemleak-test.c
kmemleak.c	mm: replace strict_strtoul() with kstrtoul()	2013-09-11 15:57:11 -07:00
ksm.c	mm: replace strict_strtoul() with kstrtoul()	2013-09-11 15:57:11 -07:00
maccess.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
madvise.c	mm/madvise.c: fix coding-style errors	2013-09-11 15:57:00 -07:00
Makefile	zswap: add to mm/	2013-07-10 18:11:34 -07:00
memblock.c	mm/memblock.c: fix wrong comment in __next_free_mem_range()	2013-07-09 10:33:23 -07:00
memcontrol.c	Merge branch 'for-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2013-09-03 18:25:03 -07:00
memory_hotplug.c	mm: memory-hotplug: enable memory hotplug to handle hugepage	2013-09-11 15:57:48 -07:00
memory-failure.c	mm: soft-offline: use migrate_pages() instead of migrate_huge_page()	2013-09-11 15:57:47 -07:00
memory.c	mm: migrate: add hugepage migration code to move_pages()	2013-09-11 15:57:48 -07:00
mempolicy.c	mm: mbind: add hugepage migration code to mbind()	2013-09-11 15:57:48 -07:00
mempool.c	mempool: add @gfp_mask to mempool_create_node()	2012-06-25 11:53:47 +02:00
migrate.c	mm: migrate: add hugepage migration code to move_pages()	2013-09-11 15:57:48 -07:00
mincore.c	swap: make each swap partition have one address_space	2013-02-23 17:50:17 -08:00
mlock.c	Revert "mm: introduce VM_POPULATE flag to better deal with racy userspace programs"	2013-03-28 17:45:51 -07:00
mm_init.c	mm: tune vm_committed_as percpu_counter batching size	2013-07-03 16:07:32 -07:00
mmap.c	mm: mmap_region: kill correct_wcount/inode, use allow_write_access()	2013-09-11 15:57:07 -07:00
mmu_context.c	mm: remove old aio use_mm() comment	2013-05-07 18:38:27 -07:00
mmu_notifier.c	treewide: relase -> release	2013-06-28 14:34:33 +02:00
mmzone.c	mm: rename page struct field helpers	2013-02-23 17:50:18 -08:00
mprotect.c	mm/mprotect.c: coding-style cleanups	2012-12-18 15:02:15 -08:00
mremap.c	mm: move_ptes -- Set soft dirty bit depending on pte type	2013-08-27 09:36:17 -07:00
msync.c
nobootmem.c	mm: concentrate modification of totalram_pages into the mm core	2013-07-03 16:07:33 -07:00
nommu.c	mm: remove free_area_cache	2013-07-10 18:11:34 -07:00
oom_kill.c	mm/oom_kill: remove weird use of ERR_PTR()/PTR_ERR().	2013-07-15 11:25:05 +09:30
page_alloc.c	mm: memory-hotplug: enable memory hotplug to handle hugepage	2013-09-11 15:57:48 -07:00
page_cgroup.c	memcontrol: use N_MEMORY instead N_HIGH_MEMORY	2012-12-12 17:38:32 -08:00
page_io.c	mm: remove compressed copy from zram in-memory	2013-07-03 16:07:26 -07:00
page_isolation.c	mm: memory-hotplug: enable memory hotplug to handle hugepage	2013-09-11 15:57:48 -07:00
page-writeback.c	mm: revert "page-writeback.c: subtract min_free_kbytes from dirtyable memory"	2013-09-11 15:57:23 -07:00
pagewalk.c	mm/pagewalk.c: walk_page_range should avoid VM_PFNMAP areas	2013-05-24 16:22:53 -07:00
percpu-km.c
percpu-vm.c	mm: fix kernel-doc warnings	2012-06-20 14:39:36 -07:00
percpu.c	mm, percpu: Make sure percpu_alloc early parameter has an argument	2012-12-02 06:23:04 -08:00
pgtable-generic.c	mm: move pgtable related functions to right place	2013-09-11 15:57:30 -07:00
process_vm_access.c	Fix: compat_rw_copy_check_uvector() misuse in aio, readv, writev, and security keys	2013-03-12 11:05:45 -07:00
quicklist.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
readahead.c	readahead: make context readahead more conservative	2013-09-11 15:57:39 -07:00
rmap.c	s390/mm: implement software referenced bits	2013-08-29 13:20:11 +02:00
shmem.c	shm_mnt is as longterm as it gets, TYVM...	2013-09-03 22:50:27 -04:00
slab_common.c	Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2013-07-14 15:14:29 -07:00
slab.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
slab.h	memcg: check that kmem_cache has memcg_params before accessing it	2013-08-28 19:26:38 -07:00
slob.c	Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2013-07-14 15:14:29 -07:00
slub.c	mm: replace strict_strtoul() with kstrtoul()	2013-09-11 15:57:11 -07:00
sparse-vmemmap.c	sparse-vmemmap: specify vmemmap population range in bytes	2013-04-29 15:54:35 -07:00
sparse.c	mm/sparse.c: put clear_hwpoisoned_pages within CONFIG_MEMORY_HOTREMOVE	2013-07-09 10:33:22 -07:00
swap_state.c	swap: avoid read_swap_cache_async() race to deadlock while waiting on discard I/O completion	2013-06-12 16:29:45 -07:00
swap.c	thp, mm: avoid PageUnevictable on active/inactive lru lists	2013-07-31 14:41:03 -07:00
swapfile.c	swap: make cluster allocation per-cpu	2013-09-11 15:57:17 -07:00
truncate.c	mm: teach truncate_inode_pages_range() to handle non page aligned ranges	2013-05-27 23:32:35 -04:00
util.c	swap: clean-up #ifdef in page_mapping()	2013-09-11 15:57:31 -07:00
vmalloc.c	mm, vmalloc: use well-defined find_last_bit() func	2013-09-11 15:57:34 -07:00
vmpressure.c	Merge branch 'for-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2013-09-03 18:25:03 -07:00
vmscan.c	mm: vmscan: fix numa reclaim balance problem in kswapd	2013-09-11 15:57:22 -07:00
vmstat.c	vmstat: use this_cpu() to avoid irqon/off sequence in refresh_cpu_vm_stats	2013-09-11 15:57:31 -07:00
zbud.c	mm/zbud: fix some trivial typos in comments	2013-09-11 15:57:35 -07:00
zswap.c	mm/zswap.c: get swapper address_space by using macro	2013-09-11 15:57:08 -07:00