Minchan Kim 435b405c06 memory-hotplug: fix pages missed by race rather than failing ... If race between allocation and isolation in memory-hotplug offline happens, some pages could be in MIGRATE_MOVABLE of free_list although the pageblock's migratetype of the page is MIGRATE_ISOLATE. The race could be detected by get_freepage_migratetype in __test_page_isolated_in_pageblock. If it is detected, now EBUSY gets bubbled all the way up and the hotplug operations fails. But better idea is instead of returning and failing memory-hotremove, move the free page to the correct list at the time it is detected. It could enhance memory-hotremove operation success ratio although the race is really rare. Suggested by Mel Gorman. [akpm@linux-foundation.org: small cleanup] Signed-off-by: Minchan Kim <minchan@kernel.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Acked-by: Mel Gorman <mgorman@suse.de> Cc: Xishi Qiu <qiuxishi@huawei.com> Cc: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-10-09 16:22:46 +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	->encode_fh() API change	2012-05-29 23:28:33 -04:00
compaction.c	cma: fix watermark checking	2012-10-09 16:22:45 +09:00
debug-pagealloc.c	mm, x86: Remove debug_pagealloc_enabled	2011-12-06 09:24:07 +01:00
dmapool.c	mm: fix implicit stat.h usage in dmapool.c	2011-10-31 09:20:12 -04:00
fadvise.c	switch simple cases of fget_light to fdget	2012-09-26 22:20:08 -04:00
failslab.c	switch debugfs to umode_t	2012-01-03 22:54:56 -05:00
filemap_xip.c	mm: replace vma prio_tree with an interval tree	2012-10-09 16:22:39 +09:00
filemap.c	mm: kill vma flag VM_CAN_NONLINEAR	2012-10-09 16:22:17 +09:00
fremap.c	mm: replace vma prio_tree with an interval tree	2012-10-09 16:22:39 +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	mm rmap: remove vma_address check for address inside vma	2012-10-09 16:22:41 +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: replace vma prio_tree with an interval tree	2012-10-09 16:22:39 +09:00
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	cma: fix watermark checking	2012-10-09 16:22:45 +09:00
interval_tree.c	mm: add CONFIG_DEBUG_VM_RB build option	2012-10-09 16:22:42 +09:00
Kconfig	thp, x86: introduce HAVE_ARCH_TRANSPARENT_HUGEPAGE	2012-10-09 16:22:29 +09:00
Kconfig.debug	mm: more intensive memory corruption debugging	2012-01-10 16:30:42 -08:00
kmemcheck.c	kmemcheck: Fix build errors due to missing slab.h	2010-03-30 22:02:32 +09:00
kmemleak-test.c	kmemleak: remove memset by using kzalloc	2011-01-27 18:31:51 +00:00
kmemleak.c	kmemleak: use rbtree instead of prio tree	2012-10-09 16:22:39 +09:00
ksm.c	mm anon rmap: replace same_anon_vma linked list with an interval tree.	2012-10-09 16:22:41 +09:00
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: prepare VM_DONTDUMP for using in drivers	2012-10-09 16:22:18 +09:00
Makefile	mm: replace vma prio_tree with an interval tree	2012-10-09 16:22:39 +09:00
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: build zonelists when offlining pages	2012-10-09 16:22:43 +09:00
memory-failure.c	mm anon rmap: replace same_anon_vma linked list with an interval tree.	2012-10-09 16:22:41 +09:00
memory.c	mm: replace vma prio_tree with an interval tree	2012-10-09 16:22:39 +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	mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode	2012-03-21 17:54:54 -07:00
mlock.c	mm: kill vma flag VM_RESERVED and mm->reserved_vm counter	2012-10-09 16:22:19 +09:00
mm_init.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
mmap.c	mm: avoid taking rmap locks in move_ptes()	2012-10-09 16:22:42 +09:00
mmu_context.c	mm, counters: remove task argument to sync_mm_rss() and __sync_task_rss_stat()	2012-03-21 17:54:59 -07:00
mmu_notifier.c	mm: mmu_notifier: make the mmu_notifier srcu static	2012-10-09 16:22:43 +09:00
mmzone.c	memcg: rename config variables	2012-07-31 18:42:43 -07:00
mprotect.c	Merge branch 'akpm' (Andrew's patch-bomb)	2012-03-22 09:04:48 -07:00
mremap.c	mm: avoid taking rmap locks in move_ptes()	2012-10-09 16:22:42 +09:00
msync.c	sanitize vfs_fsync calling conventions	2010-05-21 18:31:21 -04:00
nobootmem.c	memblock: free allocated memblock_reserved_regions later	2012-07-11 16:04:50 -07:00
nommu.c	mm: replace vma prio_tree with an interval tree	2012-10-09 16:22:39 +09:00
oom_kill.c	oom: remove deprecated oom_adj	2012-10-09 16:22:24 +09:00
page_alloc.c	memory-hotplug: fix pages missed by race rather than failing	2012-10-09 16:22:46 +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 pages missed by race rather than failing	2012-10-09 16:22:46 +09:00
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: clear memory allocated with the km allocator	2010-10-02 10:28:42 +03:00
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	thp: introduce pmdp_invalidate()	2012-10-09 16:22:29 +09:00
process_vm_access.c	aio/vfs: cleanup of rw_copy_check_uvector() and compat_rw_copy_check_uvector()	2012-05-31 17:49:32 -07:00
quicklist.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
readahead.c	switch simple cases of fget_light to fdget	2012-09-26 22:20:08 -04:00
rmap.c	mm rmap: remove vma_address check for address inside vma	2012-10-09 16:22:41 +09:00
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	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
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	mm/fs: remove truncate_range	2012-05-29 16:22:23 -07:00
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: cma: discard clean pages during contiguous allocation instead of migration	2012-10-09 16:22:43 +09:00
vmstat.c	cma: count free CMA pages	2012-10-09 16:22:44 +09:00