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Kirill A. Shutemov 48ec833b78 Revert "mm/memory.c: share the i_mmap_rwsem" 
This reverts commit c8475d144a.

There are several[1][2] of bug reports which points to this commit as potential
cause[3].

Let's revert it until we figure out what's going on.

[1] https://lkml.org/lkml/2014/11/14/342
[2] https://lkml.org/lkml/2014/12/22/213
[3] https://lkml.org/lkml/2014/12/9/741

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Cc: Hugh Dickins <hughd@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2014-12-22 14:27:34 -08:00
..
Kconfig mm/balloon_compaction: add vmstat counters and kpageflags bit 2014-10-09 22:26:01 -04:00
Kconfig.debug mm/debug-pagealloc: prepare boottime configurable on/off 2014-12-13 12:42:48 -08:00
Makefile mm/page_owner: keep track of page owners 2014-12-13 12:42:48 -08:00
backing-dev.c Merge branch 'for-3.18/core' of git://git.kernel.dk/linux-block 2014-10-18 11:53:51 -07:00
balloon_compaction.c mm/balloon_compaction: fix deflation when compaction is disabled 2014-10-29 16:33:15 -07:00
bootmem.c mem-hotplug: reset node managed pages when hot-adding a new pgdat 2014-11-13 16:17:06 -08:00
cleancache.c
…
cma.c mm: cma: split cma-reserved in dmesg log 2014-12-18 19:08:10 -08:00
compaction.c mm, compaction: more focused lru and pcplists draining 2014-12-10 17:41:06 -08:00
debug-pagealloc.c mm/debug-pagealloc: make debug-pagealloc boottime configurable 2014-12-13 12:42:48 -08:00
debug.c mm: move page->mem_cgroup bad page handling into generic code 2014-12-10 17:41:09 -08:00
dmapool.c mm/dmapool.c: fixed a brace coding style issue 2014-10-09 22:26:00 -04:00
early_ioremap.c
…
fadvise.c mm: fadvise: document the fadvise(FADV_DONTNEED) behaviour for partial pages 2014-12-13 12:42:49 -08:00
failslab.c
…
filemap.c new helper: iter_is_iovec() 2014-12-17 06:43:56 -05:00
filemap_xip.c mm/xip: share the i_mmap_rwsem 2014-12-13 12:42:45 -08:00
fremap.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-12-15 15:52:01 -08:00
frontswap.c mm/frontswap.c: fix the condition in BUG_ON 2014-12-10 17:41:08 -08:00
gup.c kernel: Provide READ_ONCE and ASSIGN_ONCE 2014-12-20 16:48:59 -08:00
highmem.c
…
huge_memory.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-12-15 15:52:01 -08:00
hugetlb.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-12-15 15:52:01 -08:00
hugetlb_cgroup.c mm: hugetlb_cgroup: convert to lockless page counters 2014-12-10 17:41:04 -08:00
hwpoison-inject.c
…
init-mm.c
…
internal.h mm, compaction: always update cached scanner positions 2014-12-10 17:41:06 -08:00
interval_tree.c mm: convert a few VM_BUG_ON callers to VM_BUG_ON_VMA 2014-10-09 22:25:57 -04:00
iov_iter.c copy_from_iter_nocache() 2014-12-08 20:25:23 -05:00
kmemcheck.c mm/slab_common: move kmem_cache definition to internal header 2014-10-09 22:25:50 -04:00
kmemleak-test.c
…
kmemleak.c
…
ksm.c mmu_notifier: call mmu_notifier_invalidate_range() from VMM 2014-11-13 13:46:09 +11:00
list_lru.c
…
maccess.c
…
madvise.c VFS: Rename do_fallocate() to vfs_fallocate() 2014-11-07 16:17:44 -05:00
memblock.c mm/memblock.c: refactor functions to set/clear MEMBLOCK_HOTPLUG 2014-12-13 12:42:46 -08:00
memcontrol.c mm/memcontrol.c: remove unused mem_cgroup_lru_names_not_uptodate() 2014-12-13 12:42:49 -08:00
memory-failure.c mm: vmscan: invoke slab shrinkers from shrink_zone() 2014-12-13 12:42:48 -08:00
memory.c Revert "mm/memory.c: share the i_mmap_rwsem" 2014-12-22 14:27:34 -08:00
memory_hotplug.c mm, memory_hotplug/failure: drain single zone pcplists 2014-12-10 17:41:05 -08:00
mempolicy.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2014-12-19 18:19:19 -08:00
mempool.c
…
migrate.c vm_area_operations: kill ->migrate() 2014-12-17 08:26:51 -05:00
mincore.c mm: mincore: add hwpoison page handle 2014-12-13 12:42:46 -08:00
mlock.c Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-13 15:44:12 +02:00
mm_init.c
…
mmap.c mm: export find_extend_vma() and handle_mm_fault() for driver use 2014-12-13 12:42:47 -08:00
mmu_context.c
…
mmu_notifier.c mmu_notifier: add the callback for mmu_notifier_invalidate_range() 2014-11-13 13:46:09 +11:00
mmzone.c
…
mprotect.c mm: softdirty: enable write notifications on VMAs after VM_SOFTDIRTY cleared 2014-10-14 02:18:28 +02:00
mremap.c Merge git://git.kvack.org/~bcrl/aio-next 2014-12-14 13:36:57 -08:00
msync.c
…
nobootmem.c mem-hotplug: reset node managed pages when hot-adding a new pgdat 2014-11-13 16:17:06 -08:00
nommu.c mm/nommu: use alloc_pages_exact() rather than its own implementation 2014-12-13 12:42:48 -08:00
oom_kill.c oom: kill the insufficient and no longer needed PT_TRACE_EXIT check 2014-12-13 12:42:49 -08:00
page-writeback.c mm, memcg: fix potential undefined behaviour in page stat accounting 2014-12-10 17:41:08 -08:00
page_alloc.c mm: cma: split cma-reserved in dmesg log 2014-12-18 19:08:10 -08:00
page_counter.c mm: memcontrol: remove obsolete kmemcg pinning tricks 2014-12-10 17:41:05 -08:00
page_ext.c mm/page_owner: keep track of page owners 2014-12-13 12:42:48 -08:00
page_io.c
…
page_isolation.c mm, page_isolation: drain single zone pcplists 2014-12-10 17:41:05 -08:00
page_owner.c mm/page_owner: correct owner information for early allocated pages 2014-12-13 12:42:48 -08:00
pagewalk.c mm: use VM_BUG_ON_MM where possible 2014-10-09 22:25:58 -04:00
percpu-km.c
…
percpu-vm.c
…
percpu.c percpu: off by one in BUG_ON() 2014-10-29 10:34:34 -04:00
pgtable-generic.c
…
process_vm_access.c
…
quicklist.c
…
readahead.c
…
rmap.c kernel: Provide READ_ONCE and ASSIGN_ONCE 2014-12-20 16:48:59 -08:00
shmem.c new helper: iter_is_iovec() 2014-12-17 06:43:56 -05:00
slab.c slab: fix cpuset check in fallback_alloc 2014-12-13 12:42:53 -08:00
slab.h memcg: use generic slab iterators for showing slabinfo 2014-12-10 17:41:07 -08:00
slab_common.c memcg: use generic slab iterators for showing slabinfo 2014-12-10 17:41:07 -08:00
slob.c mm/sl[ao]b: always track caller in kmalloc_(node_)track_caller() 2014-10-09 22:25:50 -04:00
slub.c slub: fix cpuset check in get_any_partial 2014-12-13 12:42:53 -08:00
sparse-vmemmap.c
…
sparse.c
…
swap.c mm: memcontrol: do not kill uncharge batching in free_pages_and_swap_cache 2014-10-09 22:25:59 -04:00
swap_cgroup.c mm: page_cgroup: rename file to mm/swap_cgroup.c 2014-12-10 17:41:09 -08:00
swap_state.c mm: page_cgroup: rename file to mm/swap_cgroup.c 2014-12-10 17:41:09 -08:00
swapfile.c mm: page_cgroup: rename file to mm/swap_cgroup.c 2014-12-10 17:41:09 -08:00
truncate.c mm: Fix comment before truncate_setsize() 2014-11-07 08:29:25 +11:00
util.c proc/maps: make vm_is_stack() logic namespace-friendly 2014-10-09 22:25:50 -04:00
vmacache.c mm,vmacache: count number of system-wide flushes 2014-12-13 12:42:48 -08:00
vmalloc.c mm/vmalloc.c: fix memory ordering bug 2014-12-13 12:42:49 -08:00
vmpressure.c mm/vmpressure.c: fix race in vmpressure_work_fn() 2014-12-02 17:32:07 -08:00
vmscan.c mm: vmscan: invoke slab shrinkers from shrink_zone() 2014-12-13 12:42:48 -08:00
vmstat.c mm,vmacache: count number of system-wide flushes 2014-12-13 12:42:48 -08:00
workingset.c
…
zbud.c mm/zbud: init user ops only when it is needed 2014-12-13 12:42:51 -08:00
zpool.c
…
zsmalloc.c mm/zsmalloc: adjust order of functions 2014-12-18 19:08:11 -08:00
zswap.c mm/zswap: delete unnecessary check before calling free_percpu() 2014-12-13 12:42:50 -08:00