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Andy Whitcroft 540557b943 sparsemem: record when a section has a valid mem_map ... We have flags to indicate whether a section actually has a valid mem_map associated with it. This is never set and we rely solely on the present bit to indicate a section is valid. By definition a section is not valid if it has no mem_map and there is a window during init where the present bit is set but there is no mem_map, during which pfn_valid() will return true incorrectly. Use the existing SECTION_HAS_MEM_MAP flag to indicate the presence of a valid mem_map. Switch valid_section{,_nr} and pfn_valid() to this bit. Add a new present_section{,_nr} and pfn_present() interfaces for those users who care to know that a section is going to be valid. [akpm@linux-foundation.org: coding-syle fixes] Signed-off-by: Andy Whitcroft <apw@shadowen.org> Acked-by: Mel Gorman <mel@csn.ul.ie> Cc: Christoph Lameter <clameter@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		18 years ago
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Kconfig	xen: disable split pte locks for now	18 years ago
Makefile	CONFIG_BOUNCE to avoid useless inclusion of bounce buffer logic	18 years ago
allocpercpu.c	Slab allocators: Replace explicit zeroing with __GFP_ZERO	18 years ago
backing-dev.c	remove mm/backing-dev.c:congestion_wait_interruptible()	18 years ago
bootmem.c	[PATCH] remove EXPORT_UNUSED_SYMBOL'ed symbols	18 years ago
bounce.c	Drop 'size' argument from bio_endio and bi_end_io	18 years ago
fadvise.c	[PATCH] mm: change uses of f_{dentry,vfsmnt} to use f_path	18 years ago
filemap.c	fix page release issue in filemap_fault	18 years ago
filemap.h	Remove all inclusions of <linux/config.h>	19 years ago
filemap_xip.c	mm: fault feedback #2	18 years ago
fremap.c	fix VM_CAN_NONLINEAR check in sys_remap_file_pages	18 years ago
highmem.c	Create the ZONE_MOVABLE zone	18 years ago
hugetlb.c	hugetlb: fix clear_user_highpage arguments	18 years ago
internal.h	Make page->private usable in compound pages	18 years ago
madvise.c	speed up madvise_need_mmap_write() usage	18 years ago
memory.c	mm: set_page_dirty_balance() vs ->page_mkwrite()	18 years ago
memory_hotplug.c	memory hotplug: fix unnecessary calling of init_currenty_empty_zone()	18 years ago
mempolicy.c	Fix NUMA Memory Policy Reference Counting	18 years ago
mempool.c	Slab allocators: Replace explicit zeroing with __GFP_ZERO	18 years ago
migrate.c	mm/migrate.c __user annotation	18 years ago
mincore.c	[PATCH] mincore: vma crossing fix	18 years ago
mlock.c	do not limit locked memory when RLIMIT_MEMLOCK is RLIM_INFINITY	18 years ago
mmap.c	fix NULL pointer dereference in __vm_enough_memory()	18 years ago
mmzone.c	[PATCH] remove EXPORT_UNUSED_SYMBOL'ed symbols	18 years ago
mprotect.c	mm: variable length argument support	18 years ago
mremap.c	mm: variable length argument support	18 years ago
msync.c	Detach sched.h from mm.h	18 years ago
nommu.c	fix NULL pointer dereference in __vm_enough_memory()	18 years ago
oom_kill.c	oom: print points as unsigned long	18 years ago
page-writeback.c	mm: set_page_dirty_balance() vs ->page_mkwrite()	18 years ago
page_alloc.c	process_zones(): fix recovery code	18 years ago
page_io.c	Drop 'size' argument from bio_endio and bi_end_io	18 years ago
pdflush.c	Freezer: make kernel threads nonfreezable by default	18 years ago
prio_tree.c	…
quicklist.c	Quicklists for page table pages	18 years ago
readahead.c	Fix warnings with !CONFIG_BLOCK	18 years ago
rmap.c	mm: Remove slab destructors from kmem_cache_create().	18 years ago
shmem.c	mm: Remove slab destructors from kmem_cache_create().	18 years ago
shmem_acl.c	[PATCH] Fix typos in mm/shmem_acl.c	19 years ago
slab.c	slab: skip calling cache_free_alien() when the platform is not numa capable	18 years ago
slob.c	slob: reduce list scanning	18 years ago
slub.c	SLUB: accurately compare debug flags during slab cache merge	18 years ago
sparse.c	sparsemem: record when a section has a valid mem_map	18 years ago
swap.c	Add suspend-related notifications for CPU hotplug	18 years ago
swap_state.c	Add __GFP_MOVABLE for callers to flag allocations from high memory that may be migrated	18 years ago
swapfile.c	Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION	18 years ago
thrash.c	Bug in mm/thrash.c function grab_swap_token()	18 years ago
tiny-shmem.c	[PATCH] mm/{,tiny-}shmem.c cleanups	18 years ago
truncate.c	mm: merge populate and nopage into fault (fixes nonlinear)	18 years ago
util.c	add kstrndup	18 years ago
vmalloc.c	lguest: export symbols for lguest as a module	18 years ago
vmscan.c	synchronous lumpy reclaim: wait for page writeback when directly reclaiming contiguous areas	18 years ago
vmstat.c	Remove fs.h from mm.h	18 years ago