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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>		19 years ago
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Kconfig	…
Makefile	…
bootmem.c	…
fadvise.c	…
filemap.c	…
filemap.h	…
filemap_xip.c	[PATCH] replace inode_update_time with file_update_time	19 years ago
fremap.c	…
highmem.c	…
hugetlb.c	…
internal.h	…
madvise.c	…
memory.c	…
memory_hotplug.c	…
mempolicy.c	…
mempool.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial	19 years ago
migrate.c	…
mincore.c	…
mlock.c	[PATCH] move capable() to capability.h	19 years ago
mmap.c	[PATCH] overcommit: use totalreserve_pages	19 years ago
mmzone.c	…
mprotect.c	…
mremap.c	…
msync.c	…
nommu.c	…
oom_kill.c	…
page-writeback.c	…
page_alloc.c	[PATCH] Align the node_mem_map endpoints to a MAX_ORDER boundary	19 years ago
page_io.c	…
pdflush.c	…
prio_tree.c	…
readahead.c	…
rmap.c	…
shmem.c	…
slab.c	…
slob.c	…
sparse.c	[PATCH] SPARSEMEM incorrectly calculates section number	19 years ago
swap.c	…
swap_state.c	…
swapfile.c	…
thrash.c	…
tiny-shmem.c	…
truncate.c	…
util.c	…
vmalloc.c	BUG_ON() Conversion in mm/vmalloc.c	19 years ago
vmscan.c	…