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Linus Torvalds 83896fb5e5 Revert "mm: simplify code of swap.c" 
This reverts commit d8505dee1a.

Chris Mason ended up chasing down some page allocation errors and pages
stuck waiting on the IO scheduler, and was able to narrow it down to two
commits: commit 744ed14427 ("mm: batch activate_page() to reduce lock
contention") and d8505dee1a ("mm: simplify code of swap.c").

This reverts the second one.

Reported-and-debugged-by: Chris Mason <chris.mason@oracle.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jens Axboe <jaxboe@fusionio.com>
Cc: linux-mm <linux-mm@kvack.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2011-01-17 14:42:34 -08:00
..
Kconfig thp: select CONFIG_COMPACTION if TRANSPARENT_HUGEPAGE enabled 2011-01-13 17:32:45 -08:00
Kconfig.debug
…
Makefile thp: transparent hugepage core 2011-01-13 17:32:42 -08:00
backing-dev.c
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bootmem.c
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bounce.c
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compaction.c thp: use compaction for all allocation orders 2011-01-13 17:32:46 -08:00
debug-pagealloc.c
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dmapool.c mm/dmapool.c: use TASK_UNINTERRUPTIBLE in dma_pool_alloc() 2011-01-13 17:32:48 -08:00
fadvise.c
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failslab.c
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filemap.c mm: remove likely() from grab_cache_page_write_begin() 2011-01-13 17:32:36 -08:00
filemap_xip.c
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fremap.c
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highmem.c
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huge_memory.c thp: khugepaged: make khugepaged aware about madvise 2011-01-13 17:32:47 -08:00
hugetlb.c hugetlb: fix handling of parse errors in sysfs 2011-01-13 17:32:49 -08:00
hwpoison-inject.c
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init-mm.c
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internal.h Revert "mm: batch activate_page() to reduce lock contention" 2011-01-17 14:42:19 -08:00
kmemcheck.c
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kmemleak-test.c
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kmemleak.c
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ksm.c ksm: drain pagevecs to lru 2011-01-13 17:32:49 -08:00
maccess.c
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madvise.c thp: khugepaged: make khugepaged aware about madvise 2011-01-13 17:32:47 -08:00
memblock.c
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memcontrol.c memcg: fix memory migration of shmem swapcache 2011-01-13 17:32:51 -08:00
memory-failure.c thp: compound_trans_order 2011-01-13 17:32:47 -08:00
memory.c thp: add debug checks for mapcount related invariants 2011-01-13 17:32:47 -08:00
memory_hotplug.c Merge branch 'slub/hotplug' into slab/urgent 2011-01-15 13:28:17 +02:00
mempolicy.c thp: add numa awareness to hugepage allocations 2011-01-13 17:32:45 -08:00
mempool.c
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migrate.c memcg: fix memory migration of shmem swapcache 2011-01-13 17:32:51 -08:00
mincore.c thp: mincore transparent hugepage support 2011-01-13 17:32:44 -08:00
mlock.c mlock: do not hold mmap_sem for extended periods of time 2011-01-13 17:32:36 -08:00
mm_init.c
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mmap.c brk: fix min_brk lower bound computation for COMPAT_BRK 2011-01-13 17:32:48 -08:00
mmu_context.c
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mmu_notifier.c thp: mmu_notifier_test_young 2011-01-13 17:32:46 -08:00
mmzone.c mm: page allocator: adjust the per-cpu counter threshold when memory is low 2011-01-13 17:32:31 -08:00
mprotect.c thp: mprotect: transparent huge page support 2011-01-13 17:32:44 -08:00
mremap.c thp: split_huge_page_mm/vma 2011-01-13 17:32:41 -08:00
msync.c
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nommu.c mlock: do not hold mmap_sem for extended periods of time 2011-01-13 17:32:36 -08:00
oom_kill.c
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page-writeback.c writeback: avoid unnecessary determine_dirtyable_memory call 2011-01-13 17:32:38 -08:00
page_alloc.c mm/page_alloc.c: don't cache `current' in a local 2011-01-13 17:32:49 -08:00
page_cgroup.c
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page_io.c
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page_isolation.c
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pagewalk.c thp: split_huge_page_mm/vma 2011-01-13 17:32:41 -08:00
percpu-km.c
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percpu-vm.c mm: remove gfp mask from pcpu_get_vm_areas 2011-01-13 17:32:34 -08:00
percpu.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-01-13 10:05:56 -08:00
pgtable-generic.c fix non-x86 build failure in pmdp_get_and_clear 2011-01-16 15:05:44 -08:00
prio_tree.c
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quicklist.c
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readahead.c
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rmap.c memcg: create extensible page stat update routines 2011-01-13 17:32:50 -08:00
shmem.c fs: icache RCU free inodes 2011-01-07 17:50:26 +11:00
slab.c mm/slab.c: make local symbols static 2011-01-15 13:28:36 +02:00
slob.c kernel: kmem_ptr_validate considered harmful 2011-01-07 17:50:16 +11:00
slub.c Merge branch 'slub/hotplug' into slab/urgent 2011-01-15 13:28:17 +02:00
sparse-vmemmap.c
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sparse.c thp: remove PG_buddy 2011-01-13 17:32:43 -08:00
swap.c Revert "mm: simplify code of swap.c" 2011-01-17 14:42:34 -08:00
swap_state.c thp: split_huge_page paging 2011-01-13 17:32:41 -08:00
swapfile.c thp: split_huge_page paging 2011-01-13 17:32:41 -08:00
thrash.c
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truncate.c Call the filesystem back whenever a page is removed from the page cache 2010-12-02 09:55:21 -05:00
util.c kernel: kmem_ptr_validate considered harmful 2011-01-07 17:50:16 +11:00
vmalloc.c Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2011-01-13 20:15:35 -08:00
vmscan.c Revert "mm: batch activate_page() to reduce lock contention" 2011-01-17 14:42:19 -08:00
vmstat.c thp: transparent hugepage vmstat 2011-01-13 17:32:43 -08:00