linux/mm
Jes Sorensen f4b81804a2 [PATCH] do_no_pfn()
Implement do_no_pfn() for handling mapping of memory without a struct page
backing it.  This avoids creating fake page table entries for regions which
are not backed by real memory.

This feature is used by the MSPEC driver and other users, where it is
highly undesirable to have a struct page sitting behind the page (for
instance if the page is accessed in cached mode via the struct page in
parallel to the the driver accessing it uncached, which can result in data
corruption on some architectures, such as ia64).

This version uses specific NOPFN_{SIGBUS,OOM} return values, rather than
expect all negative pfn values would be an error.  It also bugs on cow
mappings as this would not work with the VM.

[akpm@osdl.org: micro-optimise]
Signed-off-by: Jes Sorensen <jes@sgi.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-27 08:26:13 -07:00
..
allocpercpu.c [PATCH] Extract the allocpercpu functions from the slab allocator 2006-09-26 08:48:51 -07:00
bootmem.c [PATCH] bootmem: use MAX_DMA_ADDRESS instead of LOW32LIMIT 2006-09-26 08:48:49 -07:00
fadvise.c
filemap_xip.c
filemap.c [PATCH] update some mm/ comments 2006-09-26 08:48:49 -07:00
filemap.h
fremap.c [PATCH] mm: small cleanup of install_page() 2006-09-26 08:48:44 -07:00
highmem.c [PATCH] reduce MAX_NR_ZONES: move HIGHMEM counters into highmem.c/.h 2006-09-26 08:48:46 -07:00
hugetlb.c [PATCH] NUMA: Add zone_to_nid function 2006-09-26 08:48:52 -07:00
internal.h [PATCH] mm: VM_BUG_ON 2006-09-26 08:48:44 -07:00
Kconfig
madvise.c
Makefile [PATCH] Extract the allocpercpu functions from the slab allocator 2006-09-26 08:48:51 -07:00
memory_hotplug.c
memory.c [PATCH] do_no_pfn() 2006-09-27 08:26:13 -07:00
mempolicy.c [PATCH] GFP_THISNODE for the slab allocator 2006-09-27 08:26:12 -07:00
mempool.c
migrate.c [PATCH] Define easier to handle GFP_THISNODE 2006-09-26 08:48:50 -07:00
mincore.c
mlock.c
mmap.c [PATCH] ZVC: Support NR_SLAB_RECLAIMABLE / NR_SLAB_UNRECLAIMABLE 2006-09-26 08:48:51 -07:00
mmzone.c
mprotect.c [PATCH] mm: optimize the new mprotect() code a bit 2006-09-26 08:48:44 -07:00
mremap.c
msync.c [PATCH] mm: msync() cleanup 2006-09-26 08:48:45 -07:00
nommu.c [PATCH] ZVC: Support NR_SLAB_RECLAIMABLE / NR_SLAB_UNRECLAIMABLE 2006-09-26 08:48:51 -07:00
oom_kill.c [PATCH] NUMA: Add zone_to_nid function 2006-09-26 08:48:52 -07:00
page_alloc.c [PATCH] Do not allocate pagesets for unpopulated zones. 2006-09-27 08:26:13 -07:00
page_io.c [PATCH] swsusp: read speedup 2006-09-26 08:48:58 -07:00
page-writeback.c [PATCH] mm: non syncing lock_page() 2006-09-26 08:48:48 -07:00
pdflush.c
prio_tree.c
readahead.c
rmap.c [PATCH] mm: tracking shared dirty pages 2006-09-26 08:48:44 -07:00
shmem.c [PATCH] Really ignore kmem_cache_destroy return value 2006-09-27 08:26:10 -07:00
slab.c [PATCH] GFP_THISNODE for the slab allocator 2006-09-27 08:26:12 -07:00
slob.c [PATCH] Make kmem_cache_destroy() return void 2006-09-27 08:26:11 -07:00
sparse.c
swap_state.c
swap.c [PATCH] mm/: make functions static 2006-09-26 08:48:45 -07:00
swapfile.c
thrash.c
tiny-shmem.c
truncate.c [PATCH] page invalidation cleanup 2006-09-27 08:26:12 -07:00
util.c
vmalloc.c [PATCH] mm/: make functions static 2006-09-26 08:48:45 -07:00
vmscan.c [PATCH] page invalidation cleanup 2006-09-27 08:26:12 -07:00
vmstat.c [PATCH] zone_statistics: Use hot node instead of cold zone_pgdat 2006-09-27 08:26:13 -07:00