Michel Lespinasse 5ecfda041e mlock: avoid dirtying pages and triggering writeback ...

When faulting in pages for mlock(), we want to break COW for anonymous or
file pages within VM_WRITABLE, non-VM_SHARED vmas.  However, there is no
need to write-fault into VM_SHARED vmas since shared file pages can be
mlocked first and dirtied later, when/if they actually get written to.
Skipping the write fault is desirable, as we don't want to unnecessarily
cause these pages to be dirtied and queued for writeback.

Signed-off-by: Michel Lespinasse <walken@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Kosaki Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Theodore Tso <tytso@google.com>
Cc: Michael Rubin <mrubin@google.com>
Cc: Suleiman Souhlal <suleiman@google.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2011-01-13 17:32:35 -08:00

..

backing-dev.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

2010-10-26 17:58:44 -07:00

bootmem.c

…

bounce.c

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compaction.c

mm: compaction: perform a faster migration scan when migrating asynchronously

2011-01-13 17:32:34 -08:00

debug-pagealloc.c

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dmapool.c

…

fadvise.c

…

failslab.c

…

filemap_xip.c

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filemap.c

mm: clear PageError bit in msync & fsync

2011-01-13 17:32:35 -08:00

fremap.c

…

highmem.c

mm,x86: fix kmap_atomic_push vs ioremap_32.c

2010-10-27 18:03:05 -07:00

hugetlb.c

mm/hugetlb.c: avoid double unlock_page() in hugetlb_fault()

2010-12-02 14:51:14 -08:00

hwpoison-inject.c

…

init-mm.c

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internal.h

mm: fix is_mem_section_removable() page_order BUG_ON check

2010-10-26 16:52:11 -07:00

Kconfig

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Kconfig.debug

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kmemcheck.c

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kmemleak-test.c

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kmemleak.c

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ksm.c

ksm: annotate ksm_thread_mutex is no deadlock source

2010-12-02 14:51:15 -08:00

maccess.c

MN10300: Save frame pointer in thread_info struct rather than global var

2010-10-27 17:29:01 +01:00

madvise.c

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Makefile

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memblock.c

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memcontrol.c

memcg: fix wrong VM_BUG_ON() in try_charge()'s mm->owner check

2010-12-30 10:07:06 -08:00

memory_hotplug.c

mm: migration: cleanup migrate_pages API by matching types for offlining and sync

2011-01-13 17:32:34 -08:00

memory-failure.c

mm: migration: allow migration to operate asynchronously and avoid synchronous compaction in the faster path

2011-01-13 17:32:34 -08:00

memory.c

mlock: avoid dirtying pages and triggering writeback

2011-01-13 17:32:35 -08:00

mempolicy.c

mm: migration: cleanup migrate_pages API by matching types for offlining and sync

2011-01-13 17:32:34 -08:00

mempool.c

…

migrate.c

mm: migration: cleanup migrate_pages API by matching types for offlining and sync

2011-01-13 17:32:34 -08:00

mincore.c

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mlock.c

mlock: avoid dirtying pages and triggering writeback

2011-01-13 17:32:35 -08:00

mm_init.c

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mmap.c

install_special_mapping skips security_file_mmap check.

2010-12-15 12:30:36 -08:00

mmu_context.c

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mmu_notifier.c

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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

perf_events: Fix perf_counter_mmap() hook in mprotect()

2010-11-09 10:19:38 -08:00

mremap.c

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msync.c

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nommu.c

nommu: Provide stubbed alloc/free_vm_area() implementation.

2010-12-24 12:08:30 +09:00

oom_kill.c

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page_alloc.c

mm: migration: allow migration to operate asynchronously and avoid synchronous compaction in the faster path

2011-01-13 17:32:34 -08:00

page_cgroup.c

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page_io.c

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page_isolation.c

mm: page_isolation: codeclean fix comment and rm unneeded val init

2010-10-26 16:52:11 -07:00

page-writeback.c

mm/page-writeback.c: fix __set_page_dirty_no_writeback() return value

2011-01-13 17:32:32 -08:00

pagewalk.c

mm: remove call to find_vma in pagewalk for non-hugetlbfs

2010-11-25 06:50:46 +09:00

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

prio_tree.c

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quicklist.c

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readahead.c

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rmap.c

mm/rmap.c: fix comment

2010-12-27 15:14:06 +01:00

shmem.c

fs: icache RCU free inodes

2011-01-07 17:50:26 +11:00

slab.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6

2011-01-10 08:38:01 -08:00

slob.c

kernel: kmem_ptr_validate considered harmful

2011-01-07 17:50:16 +11:00

slub.c

mm: convert sprintf_symbol to %pS

2011-01-13 17:32:33 -08:00

sparse-vmemmap.c

tree-wide: fix comment/printk typos

2010-11-01 15:38:34 -04:00

sparse.c

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swap_state.c

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swap.c

fuse: use release_pages()

2010-10-27 18:03:17 -07:00

swapfile.c

block: make blkdev_get/put() handle exclusive access

2010-11-13 11:55:17 +01:00

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

mm: unify module_alloc code for vmalloc

2011-01-13 17:32:34 -08:00

vmscan.c

mm: vmscan: rename lumpy_mode to reclaim_mode

2011-01-13 17:32:34 -08:00

vmstat.c

mm: vmstat: use a single setter function and callback for adjusting percpu thresholds

2011-01-13 17:32:31 -08:00