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Laura Abbott 3c2b534580 mm: Use aligned zone start for pfn_to_bitidx calculation ...

The current calculation in pfn_to_bitidx assumes that
(pfn - zone->zone_start_pfn) >> pageblock_order will return the
same bit for all pfn in a pageblock. If zone_start_pfn is not
aligned to pageblock_nr_pages, this may not always be correct.

Consider the following with pageblock order = 10, zone start 2MB:

pfn     | pfn - zone start | (pfn - zone start) >> page block order
----------------------------------------------------------------
0x26000 | 0x25e00	   |  0x97
0x26100 | 0x25f00	   |  0x97
0x26200 | 0x26000	   |  0x98
0x26300 | 0x26100	   |  0x98

This means that calling {get,set}_pageblock_migratetype on a single
page will not set the migratetype for the full block. Fix this by
rounding down zone_start_pfn when doing the bitidx calculation.

Change-Id: I13e2f53f50db294f38ec86138c17c6fe29f0ee82
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>

2013-03-07 15:23:38 -08:00

..

backing-dev.c

bdi: use deferable timer for sync_supers task

2013-02-27 18:16:50 -08:00

bootmem.c

bootmem/sparsemem: remove limit constraint in alloc_bootmem_section

2012-03-21 17:54:58 -07:00

bounce.c

mm: remove the second argument of k[un]map_atomic()

2012-03-20 21:48:27 +08:00

cleancache.c

mm: cleancache: Use __read_mostly as appropiate.

2012-01-23 16:08:09 -05:00

compaction.c

mm: mmzone: MIGRATE_CMA migration type added

2013-02-27 18:14:01 -08:00

debug-pagealloc.c

mm, x86: Remove debug_pagealloc_enabled

2011-12-06 09:24:07 +01:00

dmapool.c

mm: fix implicit stat.h usage in dmapool.c

2011-10-31 09:20:12 -04:00

fadvise.c

fadvise: only initiate writeback for specified range with FADV_DONTNEED

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

failslab.c

switch debugfs to umode_t

2012-01-03 22:54:56 -05:00

filemap_xip.c

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

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

filemap.c

mm: Don't use CMA pages for writes

2013-03-07 15:23:35 -08:00

fremap.c

mm: delete various needless include <linux/module.h>

2011-10-31 09:20:11 -04:00

highmem.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

huge_memory.c

thp: optimize away unnecessary page table locking

2012-03-21 17:54:57 -07:00

hugetlb.c

hugetlb: prevent BUG_ON in hugetlb_fault() -> hugetlb_cow()

2012-05-10 15:06:44 -07:00

hwpoison-inject.c

HWPOISON: Clean up memory_failure() vs. __memory_failure()

2012-01-03 12:06:32 -08:00

init-mm.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

internal.h

mm: compaction: export some of the functions

2013-02-27 18:13:58 -08:00

Kconfig

mm: mmzone: MIGRATE_CMA migration type added

2013-02-27 18:14:01 -08:00

Kconfig.debug

mm: more intensive memory corruption debugging

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

kmemcheck.c

kmemcheck: Fix build errors due to missing slab.h

2010-03-30 22:02:32 +09:00

kmemleak-test.c

kmemleak: remove memset by using kzalloc

2011-01-27 18:31:51 +00:00

kmemleak.c

kmemleak: Disable early logging when kmemleak is off by default

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

ksm.c

ksm: cleanup: introduce find_mergeable_vma()

2012-03-21 17:54:59 -07:00

maccess.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

madvise.c

coredump: add VM_NODUMP, MADV_NODUMP, MADV_CLEAR_NODUMP

2012-03-23 16:58:42 -07:00

Makefile

mm: compaction: export some of the functions

2013-02-27 18:13:58 -08:00

memblock.c

memblock: Add memblock_overlaps_memory()

2013-02-20 02:43:56 -08:00

memcontrol.c

memcg,thp: fix res_counter:96 regression

2012-05-19 10:10:27 -07:00

memory_hotplug.c

mm: page_isolation: MIGRATE_CMA isolation functions added

2013-02-27 18:14:02 -08:00

memory-failure.c

mm: page_isolation: MIGRATE_CMA isolation functions added

2013-02-27 18:14:02 -08:00

memory.c

cma: fix race condition on a page

2013-03-07 15:23:35 -08:00

mempolicy.c

mm: fix NULL ptr dereference in migrate_pages

2012-04-25 21:26:34 -07:00

mempool.c

mempool: fix first round failure behavior

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

migrate.c

mm: fix NULL ptr dereference in move_pages

2012-04-25 21:26:34 -07:00

mincore.c

mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode

2012-03-21 17:54:54 -07:00

mlock.c

vm: avoid using find_vma_prev() unnecessarily

2012-03-06 18:23:36 -08:00

mm_init.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

mmap.c

kill mm argument of vm_munmap()

2012-04-21 01:58:20 -04:00

mmu_context.c

mm, counters: remove task argument to sync_mm_rss() and __sync_task_rss_stat()

2012-03-21 17:54:59 -07:00

mmu_notifier.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

mmzone.c

mm: delete various needless include <linux/module.h>

2011-10-31 09:20:11 -04:00

mprotect.c

Merge branch 'akpm' (Andrew's patch-bomb)

2012-03-22 09:04:48 -07:00

mremap.c

mm: collapse security_vm_enough_memory() variants into a single function

2012-02-14 10:45:39 +11:00

msync.c

sanitize vfs_fsync calling conventions

2010-05-21 18:31:21 -04:00

nobootmem.c

mm: nobootmem: fix sign extend problem in __free_pages_memory()

2012-05-10 15:06:44 -07:00

nommu.c

kill mm argument of vm_munmap()

2012-04-21 01:58:20 -04:00

oom_kill.c

signal: oom_kill_task: use SEND_SIG_FORCED instead of force_sig()

2012-03-23 16:58:41 -07:00

page_alloc.c

mm: Use aligned zone start for pfn_to_bitidx calculation

2013-03-07 15:23:38 -08:00

page_cgroup.c

page_cgroup: fix horrid swap accounting regression

2012-03-06 08:18:23 -08:00

page_io.c

block: kill off REQ_UNPLUG

2011-03-10 08:52:27 +01:00

page_isolation.c

mm: page_isolation: MIGRATE_CMA isolation functions added

2013-02-27 18:14:02 -08:00

page-writeback.c

Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

2012-03-28 10:02:55 -07:00

pagewalk.c

mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode

2012-03-21 17:54:54 -07:00

percpu-km.c

percpu: clear memory allocated with the km allocator

2010-10-02 10:28:42 +03:00

percpu-vm.c

percpu: use bitmap_clear

2012-01-20 09:23:16 -08:00

percpu.c

kmemleak: Fix the kmemleak tracking of the percpu areas with !SMP

2012-05-09 10:13:29 -07:00

pgtable-generic.c

thp: add HPAGE_PMD_* definitions for !CONFIG_TRANSPARENT_HUGEPAGE

2012-03-21 17:55:02 -07:00

prio_tree.c

sanitize <linux/prefetch.h> usage

2011-05-20 12:50:29 -07:00

process_vm_access.c

Fix race in process_vm_rw_core

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

quicklist.c

mm: delete various needless include <linux/module.h>

2011-10-31 09:20:11 -04:00

readahead.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rmap.c

memcg: use new logic for page stat accounting

2012-03-21 17:55:01 -07:00

shmem.c

ashmem: Add shmem_set_file to mm/shmem.c

2012-04-09 13:53:14 -07:00

slab.c

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

2012-03-28 15:04:26 -07:00

slob.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

slub.c

slub: missing test for partial pages flush work in flush_all()

2012-05-17 18:00:51 -07:00

sparse-vmemmap.c

mm: delete various needless include <linux/module.h>

2011-10-31 09:20:11 -04:00

sparse.c

msm: mm: Fix errors when turning on SPARSEMEM

2013-02-20 02:43:57 -08:00

swap_state.c

mm: fix s390 BUG by __set_page_dirty_no_writeback on swap

2012-04-23 18:19:22 -07:00

swap.c

mm: drain percpu lru add/rotate page-vectors on cpu hot-unplug

2012-03-21 17:54:58 -07:00

swapfile.c

swapon: check validity of swap_flags

2012-03-28 17:14:35 -07:00

thrash.c

mm/thrash.c: quiet sparse noise

2011-10-31 17:30:50 -07:00

truncate.c

mm for fs: add truncate_pagecache_range()

2012-03-28 17:14:35 -07:00

util.c

procfs: mark thread stack correctly in proc/<pid>/maps

2012-03-21 17:54:58 -07:00

vmalloc.c

mm: fix faulty initialization in vmalloc_init()

2013-02-20 02:43:59 -08:00

vmscan.c

mm: fix up the vmscan stat in vmstat

2012-04-25 21:26:33 -07:00

vmstat.c

mm: mmzone: MIGRATE_CMA migration type added

2013-02-27 18:14:01 -08:00