Bob Picco e984bb43f7 [PATCH] Align the node_mem_map endpoints to a MAX_ORDER boundary ...

Andy added code to buddy allocator which does not require the zone's
endpoints to be aligned to MAX_ORDER.  An issue is that the buddy allocator
requires the node_mem_map's endpoints to be MAX_ORDER aligned.  Otherwise
__page_find_buddy could compute a buddy not in node_mem_map for partial
MAX_ORDER regions at zone's endpoints.  page_is_buddy will detect that
these pages at endpoints are not PG_buddy (they were zeroed out by bootmem
allocator and not part of zone).  Of course the negative here is we could
waste a little memory but the positive is eliminating all the old checks
for zone boundary conditions.

SPARSEMEM won't encounter this issue because of MAX_ORDER size constraint
when SPARSEMEM is configured.  ia64 VIRTUAL_MEM_MAP doesn't need the logic
either because the holes and endpoints are handled differently.  This
leaves checking alloc_remap and other arches which privately allocate for
node_mem_map.

Signed-off-by: Bob Picco <bob.picco@hp.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2006-05-21 12:59:22 -07:00

..

bootmem.c

[PATCH] x86_64: Handle empty PXMs that only contain hotplug memory

2006-04-09 11:53:16 -07:00

fadvise.c

[PATCH] sys_sync_file_range()

2006-03-31 12:18:54 -08:00

filemap_xip.c

[PATCH] replace inode_update_time with file_update_time

2006-01-10 08:01:30 -08:00

filemap.c

[PATCH] Add find_get_pages_contig(): contiguous variant of find_get_pages()

2006-04-27 08:59:48 +02:00

filemap.h

[PATCH] xip: reduce code duplication

2005-06-24 00:06:41 -07:00

fremap.c

VM: add common helper function to create the page tables

2005-11-29 14:03:14 -08:00

highmem.c

BUG_ON() Conversion in mm/highmem.c

2006-04-02 13:47:35 +02:00

hugetlb.c

[PATCH] hugetlb: don't allow free hugetlb count fall below reserved count

2006-03-31 12:18:50 -08:00

internal.h

[PATCH] remove set_page_count() outside mm/

2006-03-22 07:54:02 -08:00

Kconfig

[PATCH] mm: make page migration dependent on swap and NUMA

2006-03-25 08:22:50 -08:00

madvise.c

[PATCH] Fix MADV_REMOVE protection checking

2006-04-17 18:22:18 -07:00

Makefile

[PATCH] uninline zone helpers

2006-03-27 08:44:48 -08:00

memory_hotplug.c

[PATCH] spufs: fix for CONFIG_NUMA

2006-05-01 18:17:46 -07:00

memory.c

[PATCH] Don't pass boot parameters to argv_init[]

2006-03-31 12:18:53 -08:00

mempolicy.c

[PATCH] Remove cond_resched in gather_stats()

2006-04-20 07:54:03 -07:00

mempool.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial

2006-03-26 09:41:18 -08:00

migrate.c

[PATCH] page migration: Fix fallback behavior for dirty pages

2006-05-01 18:17:45 -07:00

mincore.c

[PATCH] freepgt: sys_mincore ignore FIRST_USER_PGD_NR

2005-04-19 13:29:20 -07:00

mlock.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

mmap.c

[PATCH] overcommit: use totalreserve_pages

2006-04-11 06:18:32 -07:00

mmzone.c

[PATCH] uninline zone helpers

2006-03-27 08:44:48 -08:00

mprotect.c

[PATCH] Enable mprotect on huge pages

2006-03-22 07:54:03 -08:00

mremap.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

msync.c

The comment describing how MS_ASYNC works in msync.c is confusing

2006-03-24 18:30:53 +01:00

nommu.c

[PATCH] overcommit: use totalreserve_pages for nommu

2006-04-11 06:18:32 -07:00

oom_kill.c

[PATCH] mm: fix mm_struct reference counting bugs in mm/oom_kill.c

2006-04-19 09:13:50 -07:00

page_alloc.c

[PATCH] Align the node_mem_map endpoints to a MAX_ORDER boundary

2006-05-21 12:59:22 -07:00

page_io.c

[PATCH] mm: split page table lock

2005-10-29 21:40:42 -07:00

page-writeback.c

[PATCH] page-writeback comment fixes

2006-04-11 06:18:46 -07:00

pdflush.c

[PATCH] Swap Migration V5: PF_SWAPWRITE to allow writing to swap

2006-01-08 20:12:41 -08:00

prio_tree.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

readahead.c

[PATCH] ext3_readdir: use generic readahead

2006-03-23 07:38:09 -08:00

rmap.c

[PATCH] mm: more CONFIG_DEBUG_VM

2006-03-22 07:54:02 -08:00

shmem.c

[PATCH] add migratepage address space op to shmem

2006-04-22 09:19:52 -07:00

slab.c

[PATCH] slab: Fix kmem_cache_destroy() on NUMA

2006-05-16 07:59:32 -07:00

slob.c

[PATCH] mm/slob.c: for_each_possible_cpu(), not NR_CPUS

2006-04-19 09:13:49 -07:00

sparse.c

[PATCH] SPARSEMEM incorrectly calculates section number

2006-05-21 12:59:17 -07:00

swap_state.c

BUG_ON() Conversion in mm/swap_state.c

2006-04-01 01:25:12 +02:00

swap.c

[PATCH] for_each_possible_cpu: fixes for generic part

2006-03-28 09:16:05 -08:00

swapfile.c

[PATCH] mm: schedule find_trylock_page() removal

2006-03-31 12:18:49 -08:00

thrash.c

[PATCH] temporarily disable swap token on memory pressure

2005-11-28 14:42:25 -08:00

tiny-shmem.c

[PATCH] do_truncate() call fix in tiny-shmem.c

2006-01-12 09:08:49 -08:00

truncate.c

[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem

2006-01-09 15:59:24 -08:00

util.c

[PATCH] slab: optimize constant-size kzalloc calls

2006-03-25 08:22:49 -08:00

vmalloc.c

BUG_ON() Conversion in mm/vmalloc.c

2006-04-01 01:26:09 +02:00

vmscan.c

[PATCH] Remove __devinit and __cpuinit from notifier_call definitions

2006-04-26 08:30:03 -07:00