linux-toradex.git/include/linux/page-flags.h, branch v2.6.32.5

Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6

2009-09-24T14:53:22+00:00

* 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6: (21 commits)
  HWPOISON: Enable error_remove_page on btrfs
  HWPOISON: Add simple debugfs interface to inject hwpoison on arbitary PFNs
  HWPOISON: Add madvise() based injector for hardware poisoned pages v4
  HWPOISON: Enable error_remove_page for NFS
  HWPOISON: Enable .remove_error_page for migration aware file systems
  HWPOISON: The high level memory error handler in the VM v7
  HWPOISON: Add PR_MCE_KILL prctl to control early kill behaviour per process
  HWPOISON: shmem: call set_page_dirty() with locked page
  HWPOISON: Define a new error_remove_page address space op for async truncation
  HWPOISON: Add invalidate_inode_page
  HWPOISON: Refactor truncate to allow direct truncating of page v2
  HWPOISON: check and isolate corrupted free pages v2
  HWPOISON: Handle hardware poisoned pages in try_to_unmap
  HWPOISON: Use bitmask/action code for try_to_unmap behaviour
  HWPOISON: x86: Add VM_FAULT_HWPOISON handling to x86 page fault handler v2
  HWPOISON: Add poison check to page fault handling
  HWPOISON: Add basic support for poisoned pages in fault handler v3
  HWPOISON: Add new SIGBUS error codes for hardware poison signals
  HWPOISON: Add support for poison swap entries v2
  HWPOISON: Export some rmap vma locking to outside world
  ...

mm: return boolean from page_has_private()

2009-09-22T14:17:38+00:00

Make page_has_private() return a true boolean value and remove the double
negations from the two callsites using it for arithmetic.

Signed-off-by: Johannes Weiner 
Cc: Christoph Lameter 
Reviewed-by: Christoph Lameter 
Reviewed-by: KOSAKI Motohiro 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm: perform non-atomic test-clear of PG_mlocked on free

2009-09-22T14:17:30+00:00

By the time PG_mlocked is cleared in the page freeing path, nobody else is
looking at our page->flags anymore.

It is thus safe to make the test-and-clear non-atomic and thereby removing
an unnecessary and expensive operation from a hotpath.

Signed-off-by: Johannes Weiner 
Reviewed-by: Christoph Lameter 
Reviewed-by: KOSAKI Motohiro 
Cc: Christoph Lameter 
Cc: Mel Gorman 
Cc: Nick Piggin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

HWPOISON: Add page flag for poisoned pages

2009-09-16T09:50:03+00:00

Hardware poisoned pages need special handling in the VM and shouldn't be
touched again. This requires a new page flag. Define it here.

The page flags wars seem to be over, so it shouldn't be a problem
to get a new one.

v2: Add TestSetHWPoison (suggested by Johannes Weiner)

Acked-by: Christoph Lameter 
Signed-off-by: Andi Kleen

x86, pat: Generalize the use of page flag PG_uncached

2009-08-26T22:41:22+00:00

Only IA64 was using PG_uncached as of now. We now intend to use this bit
in x86 as well, to keep track of memory type of those addresses that
have page struct for them. So, generalize the use of that bit across
ia64 and x86.

Signed-off-by: Venkatesh Pallipadi 
Signed-off-by: Suresh Siddha 
Signed-off-by: H. Peter Anvin

Merge branches 'slab/documentation', 'slab/fixes', 'slob/cleanups' and 'slub/fixes' into for-linus

2009-06-17T05:30:15+00:00

mm: remove CONFIG_UNEVICTABLE_LRU config option

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

Currently, nobody wants to turn UNEVICTABLE_LRU off.  Thus this
configurability is unnecessary.

Signed-off-by: KOSAKI Motohiro 
Cc: Johannes Weiner 
Cc: Andi Kleen 
Acked-by: Minchan Kim 
Cc: David Woodhouse 
Cc: Matt Mackall 
Cc: Rik van Riel 
Cc: Lee Schermerhorn 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

slob: use PG_slab for identifying SLOB pages

2009-05-11T06:59:34+00:00

For the sake of consistency.

Signed-off-by: Wu Fengguang 
Cc: KOSAKI Motohiro 
Cc: Andi Kleen 
Acked-by: Matt Mackall 
Cc: Alexey Dobriyan 
Cc: Ingo Molnar 
Cc: Christoph Lameter 
Signed-off-by: Andrew Morton 
Signed-off-by: Pekka Enberg

FS-Cache: Recruit a page flags for cache management

2009-04-03T15:42:36+00:00

Recruit a page flag to aid in cache management.  The following extra flag is
defined:

 (1) PG_fscache (PG_private_2)

     The marked page is backed by a local cache and is pinning resources in the
     cache driver.

If PG_fscache is set, then things that checked for PG_private will now also
check for that.  This includes things like truncation and page invalidation.
The function page_has_private() had been added to make the checks for both
PG_private and PG_private_2 at the same time.

Signed-off-by: David Howells 
Acked-by: Steve Dickson 
Acked-by: Trond Myklebust 
Acked-by: Rik van Riel 
Acked-by: Al Viro 
Tested-by: Daire Byrne

FS-Cache: Release page->private after failed readahead

2009-04-03T15:42:35+00:00

The attached patch causes read_cache_pages() to release page-private data on a
page for which add_to_page_cache() fails.  If the filler function fails, then
the problematic page is left attached to the pagecache (with appropriate flags
set, one presumes) and the remaining to-be-attached pages are invalidated and
discarded.  This permits pages with caching references associated with them to
be cleaned up.

The invalidatepage() address space op is called (indirectly) to do the honours.

Signed-off-by: David Howells 
Acked-by: Steve Dickson 
Acked-by: Trond Myklebust 
Acked-by: Rik van Riel 
Acked-by: Al Viro 
Tested-by: Daire Byrne