Hugh Dickins b9980cdcf2 mm: fix UP THP spin_is_locked BUGs ...

Fix CONFIG_TRANSPARENT_HUGEPAGE=y CONFIG_SMP=n CONFIG_DEBUG_VM=y
CONFIG_DEBUG_SPINLOCK=n kernel: spin_is_locked() is then always false,
and so triggers some BUGs in Transparent HugePage codepaths.

asm-generic/bug.h mentions this problem, and provides a WARN_ON_SMP(x);
but being too lazy to add VM_BUG_ON_SMP, BUG_ON_SMP, WARN_ON_SMP_ONCE,
VM_WARN_ON_SMP_ONCE, just test NR_CPUS != 1 in the existing VM_BUG_ONs.

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2012-02-08 19:03:51 -08:00

..

backing-dev.c

…

bootmem.c

mm: bootmem: try harder to free pages in bulk

2012-01-10 16:30:45 -08:00

bounce.c

…

cleancache.c

…

compaction.c

mm: compaction: check for overlapping nodes during isolation for migration

2012-02-08 19:03:51 -08:00

debug-pagealloc.c

…

dmapool.c

…

fadvise.c

fadvise: only initiate writeback for specified range with FADV_DONTNEED

2012-01-10 16:30:43 -08:00

failslab.c

…

filemap_xip.c

mm/filemap_xip.c: fix race condition in xip_file_fault()

2012-02-03 16:16:41 -08:00

filemap.c

readahead: fix pipeline break caused by block plug

2012-02-03 16:16:41 -08:00

fremap.c

…

highmem.c

…

huge_memory.c

mm: fix UP THP spin_is_locked BUGs

2012-02-08 19:03:51 -08:00

hugetlb.c

mm/hugetlb.c: undo change to page mapcount in fault handler

2012-01-23 08:38:48 -08:00

hwpoison-inject.c

…

init-mm.c

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internal.h

…

Kconfig

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Kconfig.debug

mm: more intensive memory corruption debugging

2012-01-10 16:30:42 -08:00

kmemcheck.c

…

kmemleak-test.c

…

kmemleak.c

kmemleak: Disable early logging when kmemleak is off by default

2012-01-20 16:57:05 +00:00

ksm.c

memcg: clear pc->mem_cgroup if necessary.

2012-01-12 20:13:07 -08:00

maccess.c

…

madvise.c

…

Makefile

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memblock.c

memblock: Fix alloc failure due to dumb underflow protection in memblock_find_in_range_node()

2012-01-16 08:38:06 +01:00

memcontrol.c

mm/memcontrol.c: fix warning with CONFIG_NUMA=n

2012-02-03 16:16:40 -08:00

memory_hotplug.c

mm: compaction: introduce sync-light migration for use by compaction

2012-01-12 20:13:09 -08:00

memory-failure.c

mm: compaction: introduce sync-light migration for use by compaction

2012-01-12 20:13:09 -08:00

memory.c

mm: fix rss count leakage during migration

2012-01-23 08:38:49 -08:00

mempolicy.c

mm: compaction: introduce sync-light migration for use by compaction

2012-01-12 20:13:09 -08:00

mempool.c

mempool: fix first round failure behavior

2012-01-10 16:30:45 -08:00

migrate.c

mm: postpone migrated page mapping reset

2012-02-03 16:16:40 -08:00

mincore.c

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mlock.c

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mm_init.c

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mmap.c

mm: simplify find_vma_prev()

2012-01-10 16:30:44 -08:00

mmu_context.c

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mmu_notifier.c

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mmzone.c

…

mprotect.c

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mremap.c

mremap: enforce rmap src/dst vma ordering in case of vma_merge() succeeding in copy_vma()

2012-01-10 16:30:44 -08:00

msync.c

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nobootmem.c

…

nommu.c

…

oom_kill.c

mm: unify remaining mem_cont, mem, etc. variable names to memcg

2012-01-12 20:13:06 -08:00

page_alloc.c

mm: __count_immobile_pages(): make sure the node is online

2012-01-23 08:38:47 -08:00

page_cgroup.c

page_cgroup: drop multi CONFIG_MEMORY_HOTPLUG

2012-01-12 20:13:08 -08:00

page_io.c

…

page_isolation.c

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page-writeback.c

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

2012-01-10 16:59:59 -08:00

pagewalk.c

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percpu-km.c

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percpu-vm.c

…

percpu.c

Kmemleak patches

2012-01-14 18:11:11 -08:00

pgtable-generic.c

…

prio_tree.c

…

process_vm_access.c

Fix race in process_vm_rw_core

2012-02-02 12:55:17 -08:00

quicklist.c

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readahead.c

…

rmap.c

mm: unify remaining mem_cont, mem, etc. variable names to memcg

2012-01-12 20:13:06 -08:00

shmem.c

SHM_UNLOCK: fix Unevictable pages stranded after swap

2012-01-23 08:38:48 -08:00

slab.c

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

2012-01-11 18:52:23 -08:00

slob.c

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slub.c

mm,x86,um: move CMPXCHG_DOUBLE config option

2012-01-12 20:13:03 -08:00

sparse-vmemmap.c

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sparse.c

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swap_state.c

memcg: clear pc->mem_cgroup if necessary.

2012-01-12 20:13:07 -08:00

swap.c

mm: fix UP THP spin_is_locked BUGs

2012-02-08 19:03:51 -08:00

swapfile.c

mm: unify remaining mem_cont, mem, etc. variable names to memcg

2012-01-12 20:13:06 -08:00

thrash.c

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truncate.c

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util.c

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vmalloc.c

mm/vmalloc.c: eliminate extra loop in pcpu_get_vm_areas error path

2012-01-12 20:13:10 -08:00

vmscan.c

SHM_UNLOCK: fix Unevictable pages stranded after swap

2012-01-23 08:38:48 -08:00

vmstat.c

mm,x86,um: move CMPXCHG_LOCAL config option

2012-01-12 20:13:03 -08:00