3.12.30-stable review

This is the start of the stable review cycle for the 3.12.30 release. There are 96 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.

This one is special. First, it is rounded (30). Second, most of the patches are performance improvements. They are coming from SUSE Enterprise Linux and all are backed by proper testing and performance measurements. All this patchset was prepared and sent by Mel Gorman with a support of other patchers from SUSE. Thanks to all of them.

As this is special, I am gicing a whole week for responses. So responses should be made by Wed Oct 8 09:12:02 CEST 2014. Anything received after that time might be too late.

The whole patch series can be found in one patch at:

	http://kernel.org/pub/linux/kernel/people/jirislaby/stable-review/patch-3.12.30-rc1.xz

and the diffstat can be found below.

thanks,
js

===============

Al Viro (1):
callers of iov_copy_from_user_atomic() don't need pagecache_disable()

Bob Liu (2):
mm: thp: cleanup: mv alloc_hugepage to better place
mm: thp: khugepaged: add policy for finding target node

Christoph Lameter (1):
vmscan: reclaim_clean_pages_from_list() must use mod_zone_page_state()

Damien Ramonda (1):
readahead: fix sequential read cache miss detection

Dan Streetman (4):
swap: change swap_info singly-linked list to list_head lib/plist: add helper functions
lib/plist: add plist_requeue
swap: change swap_list_head to plist, add swap_avail_head

Dave Chinner (1):
fs/superblock: unregister sb shrinker before ->kill_sb()

David Rientjes (9):
mm, compaction: avoid isolating pinned pages
mm, compaction: determine isolation mode only once
mm, compaction: ignore pageblock skip when manually invoking
compaction
mm, migration: add destination page freeing callback
mm, compaction: return failed migration target pages back to freelist mm, compaction: add per-zone migration pfn cache for async compaction mm, compaction: embed migration mode in compact_control mm, compaction: terminate async compaction when rescheduling mm, thp: only collapse hugepages to nodes with affinity for
zone_reclaim_mode

Davidlohr Bueso (1):
mm: per-thread vma caching

Fabian Frederick (1):
mm/readahead.c: inline ra_submit

Han Pingtian (1):
mm: prevent setting of a value less than 0 to min_free_kbytes

Heesub Shin (1):
mm/compaction: clean up unused code lines

Hugh Dickins (4):
mm: fix bad rss-counter if remap_file_pages raced migration
mm: fix direct reclaim writeback regression
shmem: fix init_page_accessed use to stop !PageLRU bug mm/memory.c: use entry = ACCESS_ONCE(*pte) in handle_pte_fault()

Jens Axboe (1):
mm/filemap.c: avoid always dirtying mapping->flags on O_DIRECT

Jerome Marchand (2):
mm: make copy_pte_range static again memcg, vmscan: Fix forced scan of anonymous pages

Jianyu Zhan (1):
mm/swap.c: clean up *lru_cache_add* functions

Johannes Weiner (5):
lib: radix-tree: add radix_tree_delete_item()
mm: shmem: save one radix tree lookup when truncating swapped pages
mm: filemap: move radix tree hole searching here
mm + fs: prepare for non-page entries in page cache radix trees
mm: madvise: fix MADV_WILLNEED on shmem swapouts

Joonsoo Kim (7):
slab: correct pfmemalloc check
mm/compaction: disallow high-order page for migration target mm/compaction: do not call suitable_migration_target() on every page mm/compaction: change the timing to check to drop the spinlock mm/compaction: check pageblock suitability once per pageblock mm/compaction: clean-up code on success of ballon isolation
vmalloc: use rcu list iterator to reduce vmap_area_lock contention

KOSAKI Motohiro (2):
mm: get rid of unnecessary overhead of trace_mm_page_alloc_extfrag()
mm: __rmqueue_fallback() should respect pageblock type

Linus Torvalds (1):
mm: don't pointlessly use BUG_ON() for sanity check

Mel Gorman (30):
mm, x86: Account for TLB flushes only when debugging x86/mm: Clean up inconsistencies when flushing TLB ranges x86/mm: Eliminate redundant page table walk during TLB range flushing
mm: compaction: trace compaction begin and end
mm: optimize put_mems_allowed() usage
mm: vmscan: use proportional scanning during direct reclaim and full
scan at DEF_PRIORITY
mm: page_alloc: do not update zlc unless the zlc is active
mm: page_alloc: do not treat a zone that cannot be used for dirty
pages as "full"
include/linux/jump_label.h: expose the reference count
mm: page_alloc: use jump labels to avoid checking number_of_cpusets
mm: page_alloc: calculate classzone_idx once from the zonelist ref
mm: page_alloc: only check the zone id check if pages are buddies
mm: page_alloc: only check the alloc flags and gfp_mask for dirty once
mm: page_alloc: take the ALLOC_NO_WATERMARK check out of the fast path
mm: page_alloc: use unsigned int for order in more places
mm: page_alloc: reduce number of times page_to_pfn is called
mm: page_alloc: convert hot/cold parameter and immediate callers to
bool
mm: page_alloc: lookup pageblock migratetype with IRQs enabled during
free
mm: shmem: avoid atomic operation during shmem_getpage_gfp
mm: do not use atomic operations when releasing pages
mm: do not use unnecessary atomic operations when adding pages to the
LRU
fs: buffer: do not use unnecessary atomic operations when discarding
buffers
mm: non-atomically mark page accessed during page cache allocation
where possible
mm: avoid unnecessary atomic operations during end_page_writeback()
mm: pagemap: avoid unnecessary overhead when tracepoints are
deactivated
mm: rearrange zone fields into read-only, page alloc, statistics and
page reclaim lines
mm: move zone->pages_scanned into a vmstat counter
mm: vmscan: only update per-cpu thresholds for online CPU
mm: page_alloc: abort fair zone allocation policy when remotes nodes
are encountered
mm: page_alloc: reduce cost of the fair zone allocation policy

Michal Hocko (1):
mm: exclude memoryless nodes from zone_reclaim

Nishanth Aravamudan (1):
hugetlb: ensure hugepage access is denied if hugepages are not
supported

Raghavendra K T (1):
mm/readahead.c: fix readahead failure for memoryless NUMA nodes and
limit readahead pages

Sasha Levin (1):
mm: remove read_cache_page_async()

Shaohua Li (2):
swap: add a simple detector for inappropriate swapin readahead x86/mm: In the PTE swapout page reclaim case clear the accessed bit
instead of flushing the TLB

Tim Chen (1):
fs/superblock: avoid locking counting inodes and dentries before
reclaiming them

Vladimir Davydov (4):
mm: vmscan: shrink all slab objects if tight on memory
mm: vmscan: call NUMA-unaware shrinkers irrespective of nodemask
mm: vmscan: respect NUMA policy mask when shrinking slab on direct
reclaim
mm: vmscan: shrink_slab: rename max_pass -> freeable

Vlastimil Babka (8):
mm: compaction: encapsulate defer reset logic
mm: compaction: do not mark unmovable pageblocks as skipped in async
compaction
mm: compaction: reset scanner positions immediately when they meet mm/compaction: cleanup isolate_freepages()
mm/compaction: do not count migratepages when unnecessary mm/compaction: avoid rescanning pageblocks in isolate_freepages mm, compaction: properly signal and act upon lock and need_sched()
contention
mm/page_alloc: prevent MIGRATE_RESERVE pages from being misplaced

Yasuaki Ishimatsu (1):
mm: get rid of unnecessary pageblock scanning in
setup_zone_migrate_reserve

 arch/tile/mm/homecache.c                 |   2 +-
 arch/unicore32/include/asm/mmu_context.h |   4 +-
 arch/x86/include/asm/tlbflush.h          |   6 +-
 arch/x86/kernel/cpu/mtrr/generic.c       |   4 +-
 arch/x86/mm/pgtable.c                    |  21 +-
 arch/x86/mm/tlb.c                        |  52 +---
 fs/btrfs/compression.c                   |   2 +-
 fs/btrfs/extent_io.c                     |  15 +-
 fs/btrfs/file.c                          |  10 +-
 fs/buffer.c                              |  28 +-
 fs/cramfs/inode.c                        |   3 +-
 fs/exec.c                                |   5 +-
 fs/ext4/mballoc.c                        |  14 +-
 fs/f2fs/checkpoint.c                     |   1 -
 fs/f2fs/node.c                           |   2 -
 fs/fuse/dev.c                            |   2 +-
 fs/fuse/file.c                           |   4 -
 fs/gfs2/aops.c                           |   1 -
 fs/gfs2/meta_io.c                        |   4 +-
 fs/hugetlbfs/inode.c                     |   5 +
 fs/jffs2/fs.c                            |   2 +-
 fs/nfs/blocklayout/blocklayout.c         |   2 +-
 fs/ntfs/attrib.c                         |   1 -
 fs/ntfs/file.c                           |   1 -
 fs/proc/task_mmu.c                       |   3 +-
 fs/super.c                               |  16 +-
 include/linux/compaction.h               |  20 +-
 include/linux/cpuset.h                   |  56 ++--
 include/linux/gfp.h                      |   4 +-
 include/linux/huge_mm.h                  |   4 -
 include/linux/hugetlb.h                  |  10 +
 include/linux/jump_label.h               |  20 +-
 include/linux/migrate.h                  |  11 +-
 include/linux/mm.h                       |  11 +-
 include/linux/mm_types.h                 |   4 +-
 include/linux/mmzone.h                   | 233 ++++++++-------
 include/linux/page-flags.h               |   6 +-
 include/linux/pageblock-flags.h          |  33 +--
 include/linux/pagemap.h                  | 131 +++++++--
 include/linux/pagevec.h                  |   5 +
 include/linux/plist.h                    |  45 +++
 include/linux/radix-tree.h               |   5 +-
 include/linux/sched.h                    |   7 +
 include/linux/shmem_fs.h                 |   1 +
 include/linux/swap.h                     |  30 +-
 include/linux/swapfile.h                 |   2 +-
 include/linux/vm_event_item.h            |   4 +-
 include/linux/vmacache.h                 |  38 +++
 include/linux/vmstat.h                   |   8 +
 include/trace/events/compaction.h        |  67 ++++-
 include/trace/events/kmem.h              |  10 +-
 include/trace/events/pagemap.h           |  16 +-
 kernel/cpuset.c                          |  16 +-
 kernel/debug/debug_core.c                |  14 +-
 kernel/fork.c                            |   7 +-
 lib/plist.c                              |  52 ++++
 lib/radix-tree.c                         | 106 ++-----
 mm/Makefile                              |   2 +-
 mm/compaction.c                          | 347 +++++++++++++----------
 mm/filemap.c                             | 470 +++++++++++++++++++++----------
 mm/fremap.c                              |  28 +-
 mm/frontswap.c                           |  13 +-
 mm/huge_memory.c                         |  93 ++++--
 mm/hugetlb.c                             |  17 +-
 mm/internal.h                            |  22 +-
 mm/madvise.c                             |   2 +-
 mm/memory-failure.c                      |   4 +-
 mm/memory.c                              |   4 +-
 mm/memory_hotplug.c                      |   2 +-
 mm/mempolicy.c                           |  16 +-
 mm/migrate.c                             |  56 ++--
 mm/mincore.c                             |  20 +-
 mm/mmap.c                                |  55 ++--
 mm/nommu.c                               |  24 +-
 mm/page_alloc.c                          | 423 ++++++++++++++++------------
 mm/readahead.c                           |  37 +--
 mm/shmem.c                               | 133 +++------
 mm/slab.c                                |  12 +-
 mm/slub.c                                |  16 +-
 mm/swap.c                                | 101 ++++++-
 mm/swap_state.c                          |  65 ++++-
 mm/swapfile.c                            | 224 ++++++++-------
 mm/truncate.c                            |  74 ++++-
 mm/vmacache.c                            | 114 ++++++++
 mm/vmalloc.c                             |   6 +-
 mm/vmscan.c                              | 144 ++++++----
 mm/vmstat.c                              |  13 +-
 87 files changed, 2366 insertions(+), 1357 deletions(-)
 create mode 100644 include/linux/vmacache.h
 create mode 100644 mm/vmacache.c

2.1.0