linux-toradex.git/include/linux/mm.h, branch v2.6.31.7

Security/SELinux: seperate lsm specific mmap_min_addr

2009-08-17T05:09:11+00:00

Currently SELinux enforcement of controls on the ability to map low memory
is determined by the mmap_min_addr tunable.  This patch causes SELinux to
ignore the tunable and instead use a seperate Kconfig option specific to how
much space the LSM should protect.

The tunable will now only control the need for CAP_SYS_RAWIO and SELinux
permissions will always protect the amount of low memory designated by
CONFIG_LSM_MMAP_MIN_ADDR.

This allows users who need to disable the mmap_min_addr controls (usual reason
being they run WINE as a non-root user) to do so and still have SELinux
controls preventing confined domains (like a web server) from being able to
map some area of low memory.

Signed-off-by: Eric Paris 
Signed-off-by: James Morris

clarify get_user_pages() prototype

2009-06-25T18:22:13+00:00

Currently the 4th parameter of get_user_pages() is called len, but its
in pages, not bytes. Rename the thing to nr_pages to avoid future
confusion.

Signed-off-by: Peter Zijlstra 
Signed-off-by: Linus Torvalds

Move FAULT_FLAG_xyz into handle_mm_fault() callers

2009-06-21T20:08:22+00:00

This allows the callers to now pass down the full set of FAULT_FLAG_xyz
flags to handle_mm_fault().  All callers have been (mechanically)
converted to the new calling convention, there's almost certainly room
for architectures to clean up their code and then add FAULT_FLAG_RETRY
when that support is added.

Signed-off-by: Linus Torvalds

Merge branch 'linus' into perfcounters/core

2009-06-17T11:06:17+00:00

Conflicts:
	arch/x86/include/asm/kmap_types.h
	include/linux/mm.h

	include/asm-generic/kmap_types.h

Merge reason: We crossed changes with kmap_types.h cleanups in mainline.

Signed-off-by: Ingo Molnar

mm cleanup: shmem_file_setup: 'char ' -> 'const char ' for name argument

2009-06-17T02:47:44+00:00

As function shmem_file_setup does not modify/allocate/free/pass given
filename - mark it as const.

Signed-off-by: Sergei Trofimovich 
Cc: Hugh Dickins 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

page-allocator: add inactive ratio calculation function of each zone

2009-06-17T02:47:42+00:00

Factor the per-zone arithemetic inside setup_per_zone_inactive_ratio()'s
loop into a a separate function, calculate_zone_inactive_ratio().  This
function will be used in a later patch

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Minchan Kim 
Reviewed-by: KOSAKI Motohiro 
Cc: Rik van Riel 
Cc: Johannes Weiner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

page-allocator: clean up functions related to pages_min

2009-06-17T02:47:41+00:00

Change the names of two functions. It doesn't affect behavior.

Presently, setup_per_zone_pages_min() changes low, high of zone as well as
min.  So a better name is setup_per_zone_wmarks().  That's because Mel
changed zone->pages_[hig/low/min] to zone->watermark array in "page
allocator: replace the watermark-related union in struct zone with a
watermark[] array".

 * setup_per_zone_pages_min => setup_per_zone_wmarks

Of course, we have to change init_per_zone_pages_min, too.  There are not
pages_min any more.

 * init_per_zone_pages_min => init_per_zone_wmark_min

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Minchan Kim 
Acked-by: Mel Gorman 
Cc: KOSAKI Motohiro 
Cc: Rik van Riel 
Cc: Johannes Weiner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm: introduce follow_pfn()

2009-06-17T02:47:40+00:00

Analoguous to follow_phys(), add a helper that looks up the PFN at a
user virtual address in an IO mapping or a raw PFN mapping.

Signed-off-by: Johannes Weiner 
Cc: Christoph Hellwig 
Acked-by: Magnus Damm 
Cc: Hans Verkuil 
Cc: Paul Mundt 
Cc: Hugh Dickins 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

page allocator: do not check NUMA node ID when the caller knows the node is valid

2009-06-17T02:47:32+00:00

Callers of alloc_pages_node() can optionally specify -1 as a node to mean
"allocate from the current node".  However, a number of the callers in
fast paths know for a fact their node is valid.  To avoid a comparison and
branch, this patch adds alloc_pages_exact_node() that only checks the nid
with VM_BUG_ON().  Callers that know their node is valid are then
converted.

Signed-off-by: Mel Gorman 
Reviewed-by: Christoph Lameter 
Reviewed-by: KOSAKI Motohiro 
Reviewed-by: Pekka Enberg 
Acked-by: Paul Mundt 	[for the SLOB NUMA bits]
Cc: Peter Zijlstra 
Cc: Nick Piggin 
Cc: Dave Hansen 
Cc: Lee Schermerhorn 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm: clean up get_user_pages_fast() documentation

2009-06-17T02:47:30+00:00

Move more documentation for get_user_pages_fast into the new kerneldoc comment.
Add some comments for get_user_pages as well.

Also, move get_user_pages_fast declaration up to get_user_pages. It wasn't
there initially because it was once a static inline function.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Nick Piggin 
Cc: Andy Grover 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds