daniel-s-linux-stuff:linux-kernel.git
8 years agoOMAP: Fix testing of cpu defines for mach-omap1
Tony Lindgren [Mon, 10 Aug 2009 11:49:50 +0000 (14:49 +0300)]
OMAP: Fix testing of cpu defines for mach-omap1

There's no need to keep these defines limited in the ifdef block
for mach-omap2. It will just cause problems testing for the CPU
revision in the common code, like the next patch does for the DMA
errata.

Signed-off-by: Tony Lindgren <tony@atomide.com>
8 years agoOMAP: GPIO: Fix incorrect gpio_get logic for output GPIOs
Roger Quadros [Wed, 5 Aug 2009 13:53:24 +0000 (16:53 +0300)]
OMAP: GPIO: Fix incorrect gpio_get logic for output GPIOs

gpio_get() should return DATAIN register value when the GPIO
is configured as input whereas it should return DATAOUT register
value when the GPIO is configured as output.
Now /sys/kernel/debug/gpio shows proper values for output GPIOs

Signed-off-by: Roger Quadros <ext-roger.quadros@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
8 years agoLinux 2.6.31-rc5
Linus Torvalds [Sat, 1 Aug 2009 00:40:45 +0000 (17:40 -0700)]
Linux 2.6.31-rc5

8 years agoMerge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Fri, 31 Jul 2009 19:17:37 +0000 (12:17 -0700)]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: bump up nr_to_write in xfs_vm_writepage
  xfs: reduce bmv_count in xfs_vn_fiemap

8 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Fri, 31 Jul 2009 19:10:26 +0000 (12:10 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  io context: fix ref counting
  block: make the end_io functions be non-GPL exports
  block: fix improper kobject release in blk_integrity_unregister
  block: always assign default lock to queues
  mg_disk: Add missing ready status check on mg_write()
  mg_disk: fix issue with data integrity on error in mg_write()
  mg_disk: fix reading invalid status when use polling driver
  mg_disk: remove prohibited sleep operation

8 years agoMerge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 31 Jul 2009 19:09:57 +0000 (12:09 -0700)]
Merge branch 'timers-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  clocksource: Save mult_orig in clocksource_disable()

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
Linus Torvalds [Fri, 31 Jul 2009 19:09:22 +0000 (12:09 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/drzeus/mmc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  mmc: orphan subsystem
  imxmmc: Remove unnecessary semicolons
  cb710: use SG_MITER_TO_SG/SG_MITER_FROM_SG
  sdhci: use SG_MITER_TO_SG/SG_MITER_FROM_SG
  lib/scatterlist: add a flags to signalize mapping direction

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Fri, 31 Jul 2009 19:09:02 +0000 (12:09 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: sound/aoa: Add kmalloc NULL tests
  ALSA: hda - Increase PCM stream name buf in patch_realtek.c
  sound: mpu401.c: Buffer overflow
  sound: aedsp16: Buffer overflow
  ALSA: hda: fix out-of-bound hdmi_eld.sad[] write
  ALSA: hda - Add quirk for Dell Studio 1555

8 years agoclocksource: Save mult_orig in clocksource_disable()
Magnus Damm [Tue, 28 Jul 2009 21:09:55 +0000 (14:09 -0700)]
clocksource: Save mult_orig in clocksource_disable()

To fix the common case where ->enable() does not set up
mult, make sure mult_orig is saved in mult on disable.

Also add comments to explain why we do this.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Cc: johnstul@us.ibm.com
Cc: lethal@linux-sh.org
Cc: akpm@linux-foundation.org
LKML-Reference: <20090618152432.10136.9932.sendpatchset@rx1.opensource.se>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
8 years agommc: orphan subsystem
Pierre Ossman [Fri, 31 Jul 2009 10:27:28 +0000 (12:27 +0200)]
mmc: orphan subsystem

I do not have the time to take care of this, so remove myself as
maintainer.

Signed-off-by: Pierre Ossman <pierre@ossman.eu>
8 years agoimxmmc: Remove unnecessary semicolons
Joe Perches [Sun, 28 Jun 2009 16:26:31 +0000 (09:26 -0700)]
imxmmc: Remove unnecessary semicolons

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>
8 years agocb710: use SG_MITER_TO_SG/SG_MITER_FROM_SG
Sebastian Andrzej Siewior [Mon, 22 Jun 2009 07:18:05 +0000 (09:18 +0200)]
cb710: use SG_MITER_TO_SG/SG_MITER_FROM_SG

the code allready uses flush_kernel_dcache_page(). This patch updates the
driver to the recent sg API changes which require that either SG_MITER_TO_SG
or SG_MITER_FROM_SG is set. SG_MITER_TO_SG calls flush_kernel_dcache_page()
in sg_mitter_stop()

Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Acked-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>
8 years agosdhci: use SG_MITER_TO_SG/SG_MITER_FROM_SG
Sebastian Andrzej Siewior [Thu, 18 Jun 2009 07:33:32 +0000 (09:33 +0200)]
sdhci: use SG_MITER_TO_SG/SG_MITER_FROM_SG

so the page will be flushed on unmap on ARCH which need it.

Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>
8 years agolib/scatterlist: add a flags to signalize mapping direction
Sebastian Andrzej Siewior [Thu, 18 Jun 2009 08:19:12 +0000 (10:19 +0200)]
lib/scatterlist: add a flags to signalize mapping direction

sg_miter_start() is currently unaware of the direction of the copy
process (to or from the scatter list). It is important to know the
direction because the page has to be flushed in case the data written
is seen on a different mapping in user land on cache incoherent
architectures.

Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>
8 years agoMerge branch 'fix/oss' into for-linus
Takashi Iwai [Fri, 31 Jul 2009 08:17:45 +0000 (10:17 +0200)]
Merge branch 'fix/oss' into for-linus

* fix/oss:
  sound: mpu401.c: Buffer overflow
  sound: aedsp16: Buffer overflow

8 years agoMerge branch 'fix/misc' into for-linus
Takashi Iwai [Fri, 31 Jul 2009 08:17:44 +0000 (10:17 +0200)]
Merge branch 'fix/misc' into for-linus

* fix/misc:
  ALSA: sound/aoa: Add kmalloc NULL tests

8 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Fri, 31 Jul 2009 08:17:42 +0000 (10:17 +0200)]
Merge branch 'fix/hda' into for-linus

* fix/hda:
  ALSA: hda - Increase PCM stream name buf in patch_realtek.c
  ALSA: hda: fix out-of-bound hdmi_eld.sad[] write
  ALSA: hda - Add quirk for Dell Studio 1555

8 years agoALSA: sound/aoa: Add kmalloc NULL tests
Julia Lawall [Fri, 31 Jul 2009 06:32:03 +0000 (08:32 +0200)]
ALSA: sound/aoa: Add kmalloc NULL tests

Check that the result of kzalloc is not NULL before a dereference.

The semantic match that finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression *x;
identifier f;
constant char *C;
@@

x = \(kmalloc\|kcalloc\|kzalloc\)(...);
... when != x == NULL
    when != x != NULL
    when != (x || ...)
(
kfree(x)
|
f(...,C,...,x,...)
|
*f(...,x,...)
|
*x->f
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agoALSA: hda - Increase PCM stream name buf in patch_realtek.c
Takashi Iwai [Fri, 31 Jul 2009 08:05:11 +0000 (10:05 +0200)]
ALSA: hda - Increase PCM stream name buf in patch_realtek.c

The name buf with size 16 is too short for some codec names, e.g.
truncated like "ALC861-VD Analo".  Now the size is doubled.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
8 years agoio context: fix ref counting
Li Zefan [Fri, 31 Jul 2009 06:55:48 +0000 (08:55 +0200)]
io context: fix ref counting

Commit d9c7d394a8ebacb60097b192939ae9f15235225e
("block: prevent possible io_context->refcount overflow") mistakenly
changed atomic_inc(&ioc->nr_tasks) to atomic_long_inc(&ioc->refcount).

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
8 years agoxfs: bump up nr_to_write in xfs_vm_writepage
Eric Sandeen [Fri, 31 Jul 2009 05:02:17 +0000 (00:02 -0500)]
xfs: bump up nr_to_write in xfs_vm_writepage

VM calculation for nr_to_write seems off.  Bump it way
up, this gets simple streaming writes zippy again.
To be reviewed again after Jens' writeback changes.

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Cc: Chris Mason <chris.mason@oracle.com>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>
8 years agoxfs: reduce bmv_count in xfs_vn_fiemap
Eric Sandeen [Mon, 27 Jul 2009 02:52:01 +0000 (21:52 -0500)]
xfs: reduce bmv_count in xfs_vn_fiemap

commit 6321e3ed2acf3ee9643cdd403e1c88605d7944ba caused
the full bmv_count's worth of getbmapx structures to get
allocated; telling it to do MAXEXTNUM was a bit insane,
resulting in ENOMEM every time.

Chop it down to something reasonable, the number of slots
in the caller's input buffer.  If this is too large the
caller may get ENOMEM but the reason should not be a
mystery, and they can try again with something smaller.

We add 1 to the value because in the normal getbmap
world, bmv_count includes the header and xfs_getbmap does:

        nex = bmv->bmv_count - 1;
        if (nex <= 0)
                return XFS_ERROR(EINVAL);

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Olaf Weber <olaf@sgi.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Felix Blyakher <felixb@sgi.com>
8 years agoMerge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 30 Jul 2009 23:46:58 +0000 (16:46 -0700)]
Merge branch 'tracing-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  tracing/stat: Fix seqfile memory leak
  function-graph: Fix seqfile memory leak
  trace_stack: Fix seqfile memory leak
  profile: Suppress warning about large allocations when profile=1 is specified

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
Linus Torvalds [Thu, 30 Jul 2009 23:46:48 +0000 (16:46 -0700)]
Merge git://git./linux/kernel/git/mason/btrfs-unstable

* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: be more polite in the async caching threads
  Btrfs: preserve commit_root for async caching

8 years agoMerge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
Linus Torvalds [Thu, 30 Jul 2009 23:46:31 +0000 (16:46 -0700)]
Merge branch 'next' of git://git./linux/kernel/git/djbw/async_tx

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
  dmaengine: at_hdmac: add DMA slave transfers
  dmaengine: at_hdmac: new driver for the Atmel AHB DMA Controller
  dmaengine: dmatest: correct thread_count while using multiple thread per channel
  dmaengine: dmatest: add a maximum number of test iterations
  drivers/dma: Remove unnecessary semicolons
  drivers/dma/fsldma.c: Remove unnecessary semicolons
  dmaengine: move HIGHMEM64G restriction to ASYNC_TX_DMA
  fsldma: do not clear bandwidth control bits on the 83xx controller
  fsldma: enable external start for the 83xx controller
  fsldma: use PCI Read Multiple command

8 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux...
Linus Torvalds [Thu, 30 Jul 2009 23:46:17 +0000 (16:46 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-udf-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6:
  udf: Fix loading of VAT inode when drive wrongly reports number of recorded blocks

8 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux...
Linus Torvalds [Thu, 30 Jul 2009 23:46:06 +0000 (16:46 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-quota-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-quota-2.6:
  quota: Silence lockdep on quota_on

8 years agoMerge git://git.infradead.org/users/cbou/battery-2.6.31
Linus Torvalds [Thu, 30 Jul 2009 23:45:53 +0000 (16:45 -0700)]
Merge git://git.infradead.org/users/cbou/battery-2.6.31

* git://git.infradead.org/users/cbou/battery-2.6.31:
  Add ds2782 battery gas gauge driver
  olpc_battery: Ensure that the TRICKLE bit is checked
  olpc_battery: Fix up eeprom read function

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes
Linus Torvalds [Thu, 30 Jul 2009 23:45:37 +0000 (16:45 -0700)]
Merge git://git./linux/kernel/git/steve/gfs2-2.6-fixes

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  GFS2: remove dcache entries for remote deleted inodes
  GFS2: Fix incorrent statfs consistency check
  GFS2: Don't put unlikely reclaim candidates on the reclaim list.
  GFS2: Don't try and dealloc own inode
  GFS2: Fix panic in glock memory shrinker
  GFS2: keep statfs info in sync on grows
  GFS2: Shrink the shrinker

8 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Thu, 30 Jul 2009 23:45:20 +0000 (16:45 -0700)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Update defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx
  powerpc/86xx: Update GE Fanuc sbc310 default configuration
  powerpc/86xx: Update defconfig for GE Fanuc's PPC9A
  cpm_uart: Don't use alloc_bootmem in cpm_uart_cpm2.c
  powerpc/83xx: Fix PCI IO base address on MPC837xE-RDB boards
  powerpc/85xx: Don't scan for TBI PHY addresses on MPC8569E-MDS boards
  powerpc/85xx: Fix ethernet link detection on MPC8569E-MDS boards
  powerpc/mm: Fix SMP issue with MMU context handling code

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
Linus Torvalds [Thu, 30 Jul 2009 23:45:03 +0000 (16:45 -0700)]
Merge git://git./linux/kernel/git/rusty/linux-2.6-for-linus

* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  lguest and virtio: cleanup struct definitions to Linux style.
  lguest: update commentry
  lguest: fix comment style
  virtio: refactor find_vqs
  virtio: delete vq from list
  virtio: fix memory leak on device removal
  lguest: fix descriptor corruption in example launcher
  lguest: dereferencing freed mem in add_eventfd()

8 years agokprobes: Use kernel_text_address() for checking probe address
Masami Hiramatsu [Tue, 28 Jul 2009 23:47:23 +0000 (19:47 -0400)]
kprobes: Use kernel_text_address() for checking probe address

Use kernel_text_address() for checking probe address instead of
__kernel_text_address(), because __kernel_text_address() returns true
for init functions even after relaseing those functions.

That will hit a BUG() in text_poke().

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoAlan doesn't want to maintain tty code any more
Linus Torvalds [Thu, 30 Jul 2009 23:40:37 +0000 (16:40 -0700)]
Alan doesn't want to maintain tty code any more

Not that anybody can blame him.  It's a morass.  But hey, it's way
better than it _used_ to be, though, so thanks for all the fish.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoquota: Silence lockdep on quota_on
Jan Kara [Wed, 22 Jul 2009 16:12:17 +0000 (18:12 +0200)]
quota: Silence lockdep on quota_on

Commit d01730d74d2b0155da50d44555001706294014f7 didn't completely fix
the problem since we still take dqio_mutex and i_mutex in the wrong
order. Move taking of i_mutex further down (luckily it's needed only
for updating inode flags) below where dqio_mutex is taken.

Tested-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Jan Kara <jack@suse.cz>
8 years agoudf: Fix loading of VAT inode when drive wrongly reports number of recorded blocks
Jan Kara [Tue, 14 Jul 2009 17:30:23 +0000 (19:30 +0200)]
udf: Fix loading of VAT inode when drive wrongly reports number of recorded blocks

VAT inode is located in the last block recorded block of the medium. When the
drive errorneously reports number of recorded blocks, we failed to load the VAT
inode and thus mount the medium. This patch makes kernel try to read VAT inode
from the last block of the device if it is different from the last recorded
block.

Signed-off-by: Jan Kara <jack@suse.cz>
8 years agoBtrfs: be more polite in the async caching threads
Chris Mason [Thu, 30 Jul 2009 14:04:48 +0000 (10:04 -0400)]
Btrfs: be more polite in the async caching threads

The semaphore used by the async caching threads can prevent a
transaction commit, which can make the FS appear to stall.  This
releases the semaphore more often when a transaction commit is
in progress.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
8 years agoBtrfs: preserve commit_root for async caching
Yan Zheng [Thu, 30 Jul 2009 13:40:40 +0000 (09:40 -0400)]
Btrfs: preserve commit_root for async caching

The async block group caching code uses the commit_root pointer
to get a stable version of the extent allocation tree for scanning.
This copy of the tree root isn't going to change and it significantly
reduces the complexity of the scanning code.

During a commit, we have a loop where we update the extent allocation
tree root.  We need to loop because updating the root pointer in
the tree of tree roots may allocate blocks which may change the
extent allocation tree.

Right now the commit_root pointer is changed inside this loop.  It
is more correct to change the commit_root pointer only after all the
looping is done.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
8 years agoGFS2: remove dcache entries for remote deleted inodes
Benjamin Marzinski [Thu, 23 Jul 2009 23:52:34 +0000 (18:52 -0500)]
GFS2: remove dcache entries for remote deleted inodes

When a file is deleted from a gfs2 filesystem on one node, a dcache
entry for it may still exist on other nodes in the cluster. If this
happens, gfs2 will be unable to free this file on disk. Because of this,
it's possible to have a gfs2 filesystem with no files on it and no free
space. With this patch, when a node receives a callback notifying it
that the file is being deleted on another node, it schedules a new
workqueue thread to remove the file's dcache entry.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
8 years agoGFS2: Fix incorrent statfs consistency check
Benjamin Marzinski [Fri, 10 Jul 2009 23:13:26 +0000 (18:13 -0500)]
GFS2: Fix incorrent statfs consistency check

Since both linked and unlinked inodes are counted by rgd->rd_dinodes, It
makes no sense to count them with the used data blocks (first check that
I changed), it makes sense to count them with the linked inodes (second
check), and it makes no sense to care if there are more unlinked inodes
than linked ones. This fixes these errors.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
8 years agoGFS2: Don't put unlikely reclaim candidates on the reclaim list.
Benjamin Marzinski [Fri, 10 Jul 2009 23:04:24 +0000 (18:04 -0500)]
GFS2: Don't put unlikely reclaim candidates on the reclaim list.

GFS2 was placing far too many glocks on the reclaim list that were not good
candidates for freeing up from cache.  These locks would sit there and
repeatedly get scanned to see if they could be reclaimed, wasting a lot
of time when there was memory pressure. This fix does more checks on the
locks to see if they are actually likely to be removable from cache.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
8 years agoGFS2: Don't try and dealloc own inode
Steven Whitehouse [Fri, 10 Jul 2009 20:13:38 +0000 (21:13 +0100)]
GFS2: Don't try and dealloc own inode

When searching for unlinked, but still allocated inodes during block
allocation, avoid the block relating to the inode that is doing the
allocation. This fixes a hang caused when an unlinked, but still
open, inode tries to allocate some more blocks and lands up
finding itself during the search for deallocatable inodes.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
8 years agoGFS2: Fix panic in glock memory shrinker
Benjamin Marzinski [Tue, 30 Jun 2009 18:51:11 +0000 (13:51 -0500)]
GFS2: Fix panic in glock memory shrinker

It is possible for gfs2_shrink_glock_memory() to check a glock for
demotion
that's in the process of being freed by gfs2_glock_put().  In this case,
gfs2_shrink_glock_memory() will acquire a new reference to this glock,
and
then try to free the glock itself when it drops the refernce.  To solve
this, gfs2_shrink_glock_memory() just needs to check if the glock is in
the process of being freed, and if so skip it without ever unlocking the
lru_lock.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Acked-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
8 years agoGFS2: keep statfs info in sync on grows
Benjamin Marzinski [Thu, 25 Jun 2009 20:09:51 +0000 (15:09 -0500)]
GFS2: keep statfs info in sync on grows

GFS2 wasn't syncing its statfs info on grows.  This causes a problem
when you grow the filesystem on multiple nodes.  GFS2 would calculate
the new space based on the resource groups (which are always current),
and then assume that the filesystem had grown the from the existing
statfs size.  If you grew the filesystem on two different nodes in a
short time, the second node wouldn't see the statfs size change from the
first node, and would assume that it was grown by a larger amount than
it was.  When all these changes were synced out, the total fileystem
size would be incorrect (the first grow would be counted twice).

This patch syncs makes GFS2 read in the statfs changes from disk before
a grow, and write them out after the grow, while the master statfs inode
is locked.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
8 years agoGFS2: Shrink the shrinker
Steven Whitehouse [Thu, 25 Jun 2009 15:30:26 +0000 (16:30 +0100)]
GFS2: Shrink the shrinker

This patch removes some of the special cases that the shrinker
was trying to deal with. As a result we leave fewer items on
the list and none at all which cannot be demoted. This makes
the list scanning more efficient and solves some issues seen
with large numbers of inodes.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
8 years agolguest and virtio: cleanup struct definitions to Linux style.
Rusty Russell [Thu, 30 Jul 2009 22:03:46 +0000 (16:03 -0600)]
lguest and virtio: cleanup struct definitions to Linux style.

I've been doing this for years, and akpm picked me up on it about 12
months ago.  lguest partly serves as example code, so let's do it Right.

Also, remove two unused fields in struct vblk_info in the example launcher.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@redhat.com>
8 years agolguest: update commentry
Rusty Russell [Thu, 30 Jul 2009 22:03:45 +0000 (16:03 -0600)]
lguest: update commentry

Every so often, after code shuffles, I need to go through and unbitrot
the Lguest Journey (see drivers/lguest/README).  Since we now use RCU in
a simple form in one place I took the opportunity to expand that explanation.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
8 years agolguest: fix comment style
Rusty Russell [Thu, 30 Jul 2009 22:03:45 +0000 (16:03 -0600)]
lguest: fix comment style

I don't really notice it (except to begrudge the extra vertical
space), but Ingo does.  And he pointed out that one excuse of lguest
is as a teaching tool, it should set a good example.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@redhat.com>
8 years agovirtio: refactor find_vqs
Michael S. Tsirkin [Sun, 26 Jul 2009 12:48:08 +0000 (15:48 +0300)]
virtio: refactor find_vqs

This refactors find_vqs, making it more readable and robust, and fixing
two regressions from 2.6.30:
- double free_irq causing BUG_ON on device removal
- probe failure when vq can't be assigned to msi-x vector
  (reported on old host kernels)

Tested-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
8 years agovirtio: delete vq from list
Michael S. Tsirkin [Sun, 26 Jul 2009 12:48:01 +0000 (15:48 +0300)]
virtio: delete vq from list

This makes delete vq the reverse of find vq.
This is required to make it possible to retry find_vqs
after a failure, otherwise the list gets corrupted.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
8 years agovirtio: fix memory leak on device removal
Michael S. Tsirkin [Thu, 23 Jul 2009 11:57:37 +0000 (14:57 +0300)]
virtio: fix memory leak on device removal

Make vp_free_vectors do the reverse of vq_request_vectors.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
8 years agolguest: fix descriptor corruption in example launcher
Rusty Russell [Thu, 30 Jul 2009 22:03:43 +0000 (16:03 -0600)]
lguest: fix descriptor corruption in example launcher

1d589bb16b825b3a7b4edd34d997f1f1f953033d "Add serial number support
for virtio_blk, V4a" extended 'struct virtio_blk_config' to 536 bytes.
Lguest and S/390 both use an 8 bit value for the feature length, and
this change broke them (if the code is naive).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: John Cooper <john.cooper@redhat.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
8 years agolguest: dereferencing freed mem in add_eventfd()
Dan Carpenter [Sun, 19 Jul 2009 11:46:09 +0000 (14:46 +0300)]
lguest: dereferencing freed mem in add_eventfd()

"new" was freed and then dereferenced.  Also the return value wasn't being
used so I modified the caller as well.

Compile tested only.  Found by smatch (http://repo.or.cz/w/smatch.git).

regards,
dan carpenter

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
8 years agopowerpc: Update defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx
Kumar Gala [Thu, 30 Jul 2009 04:34:01 +0000 (23:34 -0500)]
powerpc: Update defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
8 years agopowerpc/86xx: Update GE Fanuc sbc310 default configuration
Martyn Welch [Thu, 2 Jul 2009 14:18:44 +0000 (15:18 +0100)]
powerpc/86xx: Update GE Fanuc sbc310 default configuration

General update of defconfig including the following notable changes:
 - Enable Highmem support.
 - Support for PCMCIA based daughter card.

Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
8 years agopowerpc/86xx: Update defconfig for GE Fanuc's PPC9A
Martyn Welch [Thu, 2 Jul 2009 14:18:35 +0000 (15:18 +0100)]
powerpc/86xx: Update defconfig for GE Fanuc's PPC9A

General update of defconfig including the following notable changes:
 - Enable GPIO access via sysfs on GE Fanuc's PPC9A.
 - Enable Highmem support.
 - Support for PCMCIA based daughter card.

Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
8 years agocpm_uart: Don't use alloc_bootmem in cpm_uart_cpm2.c
Mark Ware [Mon, 20 Jul 2009 11:51:03 +0000 (21:51 +1000)]
cpm_uart: Don't use alloc_bootmem in cpm_uart_cpm2.c

This is another alloc_bootmem() -> kzalloc() change, this time to
fix the non-fatal badness caused when booting with a cpm2_uart console.

Signed-off-by: Mark Ware <mware@elphinstone.net>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
8 years agopowerpc/83xx: Fix PCI IO base address on MPC837xE-RDB boards
Anton Vorontsov [Mon, 20 Jul 2009 21:36:43 +0000 (01:36 +0400)]
powerpc/83xx: Fix PCI IO base address on MPC837xE-RDB boards

U-Boot maps PCI IO at 0xe0300000, while current dts files specify
0xe2000000. This leads to the following oops with CONFIG_8139TOO_PIO=y.

8139too Fast Ethernet driver 0.9.28
Machine check in kernel mode.
Caused by (from SRR1=41000): Transfer error ack signal
Oops: Machine check, sig: 7 [#1]
MPC837x RDB
[...]
NIP [00000900] 0x900
LR [c0439df8] rtl8139_init_board+0x238/0x524
Call Trace:
[cf831d90] [c0439dcc] rtl8139_init_board+0x20c/0x524 (unreliable)
[cf831de0] [c043a15c] rtl8139_init_one+0x78/0x65c
[cf831e40] [c0235250] pci_call_probe+0x20/0x30
[...]

This patch fixes the issue by specifying the correct PCI IO base
address.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
8 years agopowerpc/85xx: Don't scan for TBI PHY addresses on MPC8569E-MDS boards
Anton Vorontsov [Wed, 1 Jul 2009 17:39:25 +0000 (21:39 +0400)]
powerpc/85xx: Don't scan for TBI PHY addresses on MPC8569E-MDS boards

Sometimes (e.g. when there are no UEMs attached to a board)
fsl_pq_mdio_find_free() fails to find a spare address for a TBI PHY,
this is because get_phy_id() returns bogus 0x0000ffff values
(0xffffffff is expected), and therefore mdio bus probing fails with
the following message:

  fsl-pq_mdio: probe of e0082120.mdio failed with error -16

And obviously ethernet doesn't work after this.

This patch solves the problem by adding tbi-phy node into mdio node,
so that we won't scan for spare addresses, we'll just use a fixed one.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
8 years agopowerpc/85xx: Fix ethernet link detection on MPC8569E-MDS boards
Anton Vorontsov [Wed, 24 Jun 2009 16:30:28 +0000 (20:30 +0400)]
powerpc/85xx: Fix ethernet link detection on MPC8569E-MDS boards

Linux isn't able to detect link changes on ethernet ports that were
used by U-Boot. This is because U-Boot wrongly clears interrupt
polarity bit (INTPOL, 0x400) in the extended status register (EXT_SR,
0x1b) of Marvell PHYs.

There is no easy way for PHY drivers to know IRQ line polarity (we
could extract it from the device tree and pass it to phydevs, but
that'll be quite a lot of work), so for now just reset the PHYs to
their default states.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
8 years agopowerpc/mm: Fix SMP issue with MMU context handling code
Kumar Gala [Thu, 30 Jul 2009 04:04:25 +0000 (23:04 -0500)]
powerpc/mm: Fix SMP issue with MMU context handling code

In switch_mmu_context() if we call steal_context_smp() to get a context
to use we shouldn't fall through and than call steal_context_up().  Doing
so can be problematic in that the 'mm' that steal_context_up() ends up
using will not get marked dirty in the stale_map[] for other CPUs that
might have used that mm.  Thus we could end up with stale TLB entries in
the other CPUs that can cause all kinda of havoc.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
8 years agoMerge branch 'i2c-fixes-rc4' of git://aeryn.fluff.org.uk/bjdooks/linux
Linus Torvalds [Thu, 30 Jul 2009 02:39:22 +0000 (19:39 -0700)]
Merge branch 'i2c-fixes-rc4' of git://aeryn.fluff.org.uk/bjdooks/linux

* 'i2c-fixes-rc4' of git://aeryn.fluff.org.uk/bjdooks/linux:
  i2c-omap: OMAP3430 Silicon Errata 1.153
  i2c-omap: In case of a NACK|ARDY|AL return from the ISR
  i2c-omap: Bug in reading the RXSTAT/TXSTAT values from the I2C_BUFFSTAT register
  i2c-sh_mobile: change module_init() to subsys_initcall()
  i2c: strncpy does not null terminate string
  i2c-s3c2410: s3c24xx_i2c_init: don't clobber IICLC value

8 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspe...
Linus Torvalds [Thu, 30 Jul 2009 02:15:18 +0000 (19:15 -0700)]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/suspend-2.6

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM / Hibernate: Replace bdget call with simple atomic_inc of i_count
  PM / ACPI: HP G7000 Notebook needs a SCI_EN resume quirk

8 years agoMAINTAINERS: update HP Jornada 700-series and Epson s1d13xxxfb support
Kristoffer Ericson [Wed, 29 Jul 2009 22:04:32 +0000 (15:04 -0700)]
MAINTAINERS: update HP Jornada 700-series and Epson s1d13xxxfb support

Add the relevant git repositories and affected files to the maintainership
of HP Jornada 700-series and Epson s1d13xxxfb support.

Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: finish off the email address coalescing
Joe Perches [Wed, 29 Jul 2009 22:04:32 +0000 (15:04 -0700)]
MAINTAINERS: finish off the email address coalescing

Add some touchups to the sample record.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: coalesce name and email address lines
Joe Perches [Wed, 29 Jul 2009 22:04:30 +0000 (15:04 -0700)]
MAINTAINERS: coalesce name and email address lines

Switch the MAINTAINERS email address format from

P: Linus Torvalds
M: torvalds@linux-foundation.org

to

M: Linus Torvalds <torvalds@linux-foundation.org>

Mainly to ease the copy-n-pasting of maitnainer addresses into email clients.

The script to perform this operation:

#! /bin/sh
#
# Change MAINTAINERS from
# P: name
# M: address
# to:
# M: name <address>
#
# Integrate P: and M: lines
#
perl -i -e 'local $/; while(<>) { s@P: ([^\n]+)\nM: ([^\n]+)\n@M: \1 <\2>\n@g; print; }' MAINTAINERS
#
# Quote names with periods, commas and parentheses
#
sed -r -i -e "s/^M: (.+)([\.,'\(])(.*) </M: \"\1\2\3\" </g" MAINTAINERS

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoget_maintainerpl-add-git-min-percent-option-fix
Joe Perches [Wed, 29 Jul 2009 22:04:29 +0000 (15:04 -0700)]
get_maintainerpl-add-git-min-percent-option-fix

Allow an option to control the minimum percentage of sign-offs required
before being considered a maintainer.

git-min-percent has a default value of 5

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoget_maintainer.pl: Add git-min-percent option
Joe Perches [Wed, 29 Jul 2009 22:04:28 +0000 (15:04 -0700)]
get_maintainer.pl: Add git-min-percent option

Allow an option to control the minimum percentage of sign-offs required
before being considered a maintainer.

git-min-percent has a default value of 5

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoscripts/get_maintainer.pl: Add -f directory use
Joe Perches [Wed, 29 Jul 2009 22:04:28 +0000 (15:04 -0700)]
scripts/get_maintainer.pl: Add -f directory use

Don't require a specific file in a directory to be tested.

Also Arnd Bergmann pointed out that the MAINTAINERS pattern requirement
that directory patterns have a trailing slash was unnecessary and was
likely to be error prone.  Removed that requirement.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: Scott Murray is no longer with SomaNetworks
Joe Perches [Wed, 29 Jul 2009 22:04:27 +0000 (15:04 -0700)]
MAINTAINERS: Scott Murray is no longer with SomaNetworks

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: QLOGIC QLA3XXX - Add Ron Mercer email address
Joe Perches [Wed, 29 Jul 2009 22:04:27 +0000 (15:04 -0700)]
MAINTAINERS: QLOGIC QLA3XXX - Add Ron Mercer email address

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: QLOGIC QLA2XXX - add Andrew Vasquez email address
Joe Perches [Wed, 29 Jul 2009 22:04:26 +0000 (15:04 -0700)]
MAINTAINERS: QLOGIC QLA2XXX - add Andrew Vasquez email address

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: Remove CS461x sound card section
Joe Perches [Wed, 29 Jul 2009 22:04:26 +0000 (15:04 -0700)]
MAINTAINERS: Remove CS461x sound card section

Thomas Woller's email address bounces
Nils Faerber isn't active

Added Thomas Woller to CREDITS, Nils already has an entry

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: INPUT: Add Dmitry's name to his email address
Joe Perches [Wed, 29 Jul 2009 22:04:25 +0000 (15:04 -0700)]
MAINTAINERS: INPUT: Add Dmitry's name to his email address

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: USB Serial Digi Acceleport: use separate P: for Al Borchers
Joe Perches [Wed, 29 Jul 2009 22:04:25 +0000 (15:04 -0700)]
MAINTAINERS: USB Serial Digi Acceleport: use separate P: for Al Borchers

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: Add PPS patterns
Joe Perches [Wed, 29 Jul 2009 22:04:24 +0000 (15:04 -0700)]
MAINTAINERS: Add PPS patterns

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: Update KERNEL JANITORS
Joe Perches [Wed, 29 Jul 2009 22:04:24 +0000 (15:04 -0700)]
MAINTAINERS: Update KERNEL JANITORS

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: Move ARPD to CREDITS
Joe Perches [Wed, 29 Jul 2009 22:04:23 +0000 (15:04 -0700)]
MAINTAINERS: Move ARPD to CREDITS

Jonathan Layes is hard to find.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: Remove L: linux-kernel@vger.kernel.org
Joe Perches [Wed, 29 Jul 2009 22:04:23 +0000 (15:04 -0700)]
MAINTAINERS: Remove L: linux-kernel@vger.

from sections that should not have them.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: Use tabs in ACER ASPIRE ONE
Joe Perches [Wed, 29 Jul 2009 22:04:22 +0000 (15:04 -0700)]
MAINTAINERS: Use tabs in ACER ASPIRE ONE

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: QLGE 10Gb ETHERNET - pair P:/M: entries properly
Joe Perches [Wed, 29 Jul 2009 22:04:21 +0000 (15:04 -0700)]
MAINTAINERS: QLGE 10Gb ETHERNET - pair P:/M: entries properly

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: Remove ivtv-user lists, add CX18 url
Joe Perches [Wed, 29 Jul 2009 22:04:21 +0000 (15:04 -0700)]
MAINTAINERS: Remove ivtv-user lists, add CX18 url

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMAINTAINERS: IA64 - pair P:/M: entries properly
Joe Perches [Wed, 29 Jul 2009 22:04:20 +0000 (15:04 -0700)]
MAINTAINERS: IA64 - pair P:/M: entries properly

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agouio: mark uio.h functions __KERNEL__ only
Jiri Slaby [Wed, 29 Jul 2009 22:04:19 +0000 (15:04 -0700)]
uio: mark uio.h functions __KERNEL__ only

To avoid userspace build failures such as:

.../linux/uio.h:37: error: expected `=', `,', `;', `asm' or `__attribute__' before `iov_length'
.../linux/uio.h:47: error: expected declaration specifiers or `...' before `size_t'

move uio functions inside a __KERNEL__ block.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agodrivers/serial/atmel_serial.c: fix compile when CONFIG_SERIAL_ATMEL=Y and CONFIG_SERI...
Albin Tonnerre [Wed, 29 Jul 2009 22:04:18 +0000 (15:04 -0700)]
drivers/serial/atmel_serial.c: fix compile when CONFIG_SERIAL_ATMEL=Y and CONFIG_SERIAL_ATMEL_CONSOLE=N

When SERIAL_ATMEL_CONSOLE is disabled, ATMEL_CONSOLE_DEVICE is set to
NULL, and trying to access ATMEL_CONSOLE_DEVICE->flags in
atmel_serial_probe makes the compile fail.  This fixes the issue by only
accessing it if CONFIG_SERIAL_ATMEL_CONSOLE is defined

Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agolib: flexible array implementation
Dave Hansen [Wed, 29 Jul 2009 22:04:18 +0000 (15:04 -0700)]
lib: flexible array implementation

Once a structure goes over PAGE_SIZE*2, we see occasional allocation
failures.  Some people have chosen to switch over to things like vmalloc()
that will let them keep array-like access to such a large structures.
But, vmalloc() has plenty of downsides.

Here's an alternative.  I think it's what Andrew was suggesting here:

http://lkml.org/lkml/2009/7/2/518

I call it a flexible array.  It does all of its work in PAGE_SIZE bits, so
never does an order>0 allocation.  The base level has
PAGE_SIZE-2*sizeof(int) bytes of storage for pointers to the second level.
 So, with a 32-bit arch, you get about 4MB (4183112 bytes) of total
storage when the objects pack nicely into a page.  It is half that on
64-bit because the pointers are twice the size.  There's a table detailing
this in the code.

There are kerneldocs for the functions, but here's an
overview:

flex_array_alloc() - dynamically allocate a base structure
flex_array_free() - free the array and all of the
    second-level pages
flex_array_free_parts() - free the second-level pages, but
  not the base (for static bases)
flex_array_put() - copy into the array at the given index
flex_array_get() - copy out of the array at the given index
flex_array_prealloc() - preallocate the second-level pages
between the given indexes to
guarantee no allocs will occur at
put() time.

We could also potentially just pass the "element_size" into each of the
API functions instead of storing it internally.  That would get us one
more base pointer on 32-bit.

I've been testing this by running it in userspace.  The header and patch
that I've been using are here, as well as the little script I'm using to
generate the size table which goes in the kerneldocs.

http://sr71.net/~dave/linux/flexarray/

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com>
Reviewed-by: 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>
8 years agosdhci: get rid of "frequency too high" flood when using eSDHC
Anton Vorontsov [Wed, 29 Jul 2009 22:04:16 +0000 (15:04 -0700)]
sdhci: get rid of "frequency too high" flood when using eSDHC

Since commit 8dfd0374be84793360db7fff2e635d2cd3bbcb21 ("MMC core: limit
minimum initialization frequency to 400kHz") MMC core checks for minimum
frequency, and that causes following messages flood when using eSDHC
controllers:

  ...
  mmc0: Minimum clock frequency too high for identification mode
  mmc0: Minimum clock frequency too high for identification mode
  ...

The warnings are legitimate, since if we'd use 133 MHz clocks for standard
SDHCI controllers, we'd not able to scale frequency down to 400 kHz.

But eSDHC controllers have a non-standard SD clock management, so we can
divide clock by 256 * 16, not just 256.

This patch introduces get_min_clock() callback for sdhci core and
implements it for sdhci-of driver, and thus fixes the issue.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Matt Fleming <matt@console-pimps.org>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com>
Cc: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agosysrq, kdump: make sysrq-c consistent
Hidetoshi Seto [Wed, 29 Jul 2009 22:04:14 +0000 (15:04 -0700)]
sysrq, kdump: make sysrq-c consistent

commit d6580a9f15238b87e618310c862231ae3f352d2d ("kexec: sysrq: simplify
sysrq-c handler") changed the behavior of sysrq-c to unconditional
dereference of NULL pointer.  So in cases with CONFIG_KEXEC, where
crash_kexec() was directly called from sysrq-c before, now it can be said
that a step of "real oops" was inserted before starting kdump.

However, in contrast to oops via SysRq-c from keyboard which results in
panic due to in_interrupt(), oops via "echo c > /proc/sysrq-trigger" will
not become panic unless panic_on_oops=1.  It means that even if dump is
properly configured to be taken on panic, the sysrq-c from proc interface
might not start crashdump while the sysrq-c from keyboard can start
crashdump.  This confuses traditional users of kdump, i.e.  people who
expect sysrq-c to do common behavior in both of the keyboard and proc
interface.

This patch brings the keyboard and proc interface behavior of sysrq-c in
line, by forcing panic_on_oops=1 before oops in sysrq-c handler.

And some updates in documentation are included, to clarify that there is
no longer dependency with CONFIG_KEXEC, and that now the system can just
crash by sysrq-c if no dump mechanism is configured.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Ken'ichi Ohmichi <oomichi@mxs.nes.nec.co.jp>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Brayan Arraes <brayan@yack.com.br>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agopps.h needs <linux/types.h>
Dave Jones [Wed, 29 Jul 2009 22:04:12 +0000 (15:04 -0700)]
pps.h needs <linux/types.h>

Found with make headers_check

/usr/include/linux/pps.h:52: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Dave Jones <davej@redhat.com>
Cc: Rodolfo Giometti <giometti@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agofs/ramfs/file-nommu.c needs include/linux/sched.h
Catalin Marinas [Wed, 29 Jul 2009 22:04:11 +0000 (15:04 -0700)]
fs/ramfs/file-nommu.c needs include/linux/sched.h

This file makes use of various macros defined in files like asm/current.h
or asm-generic/resource.h.  All these files can be included via sched.h.
The building of the !MMU ARM kernel (with additional patches) fails
without this change.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agonet-dccp: suppress warning about large allocations from DCCP
Mel Gorman [Wed, 29 Jul 2009 22:04:10 +0000 (15:04 -0700)]
net-dccp: suppress warning about large allocations from DCCP

The DCCP protocol tries to allocate some large hash tables during
initialisation using the largest size possible.  This can be larger than
what the page allocator can provide so it prints a warning.  However, the
caller is able to handle the situation so this patch suppresses the
warning.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoprofile: suppress warning about large allocations when profile=1 is specified
Mel Gorman [Wed, 29 Jul 2009 22:04:09 +0000 (15:04 -0700)]
profile: suppress warning about large allocations when profile=1 is specified

When profile= is used, a large buffer is allocated early at boot.  This
can be larger than what the page allocator can provide so it prints a
warning.  However, the caller is able to handle the situation so this
patch suppresses the warning.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agopage-allocator: allow too high-order warning messages to be suppressed with __GFP_NOWARN
Mel Gorman [Wed, 29 Jul 2009 22:04:08 +0000 (15:04 -0700)]
page-allocator: allow too high-order warning messages to be suppressed with __GFP_NOWARN

The page allocator warns once when an order >= MAX_ORDER is specified.
This is to catch callers of the allocator that are always falling back to
their worst-case when it was not expected.  However, there are cases where
the caller is behaving correctly but cannot suppress the warning.  This
patch allows the warning to be suppressed by the callers by specifying
__GFP_NOWARN.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agocgroup avoid permanent sleep at rmdir
KAMEZAWA Hiroyuki [Wed, 29 Jul 2009 22:04:06 +0000 (15:04 -0700)]
cgroup avoid permanent sleep at rmdir

After commit ec64f51545fffbc4cb968f0cea56341a4b07e85a ("cgroup: fix
frequent -EBUSY at rmdir"), cgroup's rmdir (especially against memcg)
doesn't return -EBUSY by temporary ref counts.  That commit expects all
refs after pre_destroy() is temporary but...it wasn't.  Then, rmdir can
wait permanently.  This patch tries to fix that and change followings.

 - set CGRP_WAIT_ON_RMDIR flag before pre_destroy().
 - clear CGRP_WAIT_ON_RMDIR flag when the subsys finds racy case.
   if there are sleeping ones, wakes them up.
 - rmdir() sleeps only when CGRP_WAIT_ON_RMDIR flag is set.

Tested-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Reported-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Reviewed-by: Paul Menage <menage@google.com>
Acked-by: Balbir Sigh <balbir@linux.vnet.ibm.com>
Signed-off-by: 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>
8 years agoeeprom/at25: bugfix "not ready" timeout after write
Sebastian Heutling [Wed, 29 Jul 2009 22:04:05 +0000 (15:04 -0700)]
eeprom/at25: bugfix "not ready" timeout after write

Under certain circumstances msleep(1) within the loop, which waits for the
EEPROM to be finished, might take longer than the timeout.  On the next
loop the status register might now return to be ready and therefore the
loop finishes.  The following check now tests if a timeout occurred and if
so returns an error although the device reported it was ready.

This fix replaces testing the occurrence of the timeout by testing the
"not ready" bit in the status register.

Signed-off-by: Sebastian Heutling <heutling@who-ing.de>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agocgroups: fix pid namespace bug
Li Zefan [Wed, 29 Jul 2009 22:04:04 +0000 (15:04 -0700)]
cgroups: fix pid namespace bug

The bug was introduced by commit cc31edceee04a7b87f2be48f9489ebb72d264844
("cgroups: convert tasks file to use a seq_file with shared pid array").

We cache a pid array for all threads that are opening the same "tasks"
file, but the pids in the array are always from the namespace of the
last process that opened the file, so all other threads will read pids
from that namespace instead of their own namespaces.

To fix it, we maintain a list of pid arrays, which is keyed by pid_ns.
The list will be of length 1 at most time.

Reported-by: Paul Menage <menage@google.com>
Idea-by: Paul Menage <menage@google.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Reviewed-by: Serge Hallyn <serue@us.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agodrivers/video/backlight/jornada720_bl.c: fix build
Kristoffer Ericson [Wed, 29 Jul 2009 22:04:03 +0000 (15:04 -0700)]
drivers/video/backlight/jornada720_bl.c: fix build

Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agolib: export generic atomic64_t functions
Roland Dreier [Wed, 29 Jul 2009 22:04:02 +0000 (15:04 -0700)]
lib: export generic atomic64_t functions

The generic atomic64_t implementation in lib/ did not export the functions
it defined, which means that modules that use atomic64_t would not link on
platforms (such as 32-bit powerpc).  For example, trying to build a kernel
with CONFIG_NET_RDS on such a platform would fail with:

    ERROR: "atomic64_read" [net/rds/rds.ko] undefined!
    ERROR: "atomic64_set" [net/rds/rds.ko] undefined!

Fix this by exporting the atomic64_t functions to modules.  (I export the
entire API even if it's not all currently used by in-tree modules to avoid
having to continue fixing this in dribs and drabs)

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agohugetlbfs: fix i_blocks accounting
Eric Sandeen [Wed, 29 Jul 2009 22:02:16 +0000 (15:02 -0700)]
hugetlbfs: fix i_blocks accounting

As reported in Red Hat bz #509671, i_blocks for files on hugetlbfs get
accounting wrong when doing something like:

   $ > foo
   $ date  > foo
   date: write error: Invalid argument
   $ /usr/bin/stat foo
     File: `foo'
     Size: 0          Blocks: 18446744073709547520 IO Block: 2097152 regular
...

This is because hugetlb_unreserve_pages() is unconditionally removing
blocks_per_huge_page(h) on each call rather than using the freed amount.
If there were 0 blocks, it goes negative, resulting in the above.

This is a regression from commit a5516438959d90b071ff0a484ce4f3f523dc3152
("hugetlb: modular state for hugetlb page size")

which did:

- inode->i_blocks -= BLOCKS_PER_HUGEPAGE * freed;
+ inode->i_blocks -= blocks_per_huge_page(h);

so just put back the freed multiplier, and it's all happy again.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Acked-by: Andi Kleen <andi@firstfloor.org>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agortc: mark if rtc-cmos drivers were successfully registered
Thadeu Lima de Souza Cascardo [Wed, 29 Jul 2009 22:02:13 +0000 (15:02 -0700)]
rtc: mark if rtc-cmos drivers were successfully registered

rtc-cmos has two drivers, one PNP and one platform.  When PNP has not
succeeded probing, platform is registered.  However, it tries to
unregister both drivers unconditionally, instead of only unregistering
those that were successfully registered.  This causes runtime warnings to
be emitted from the driver core code.

Fix this with a boolean variable for each driver indicating whether
registering was successful.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Alessandro Zummo <alessandro.zummo@towertech.it>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Brownell <david-b@pacbell.net>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Greg KH <greg@kroah.com>
Cc: Ozan Caglayan <ozan@pardus.org.tr>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agospi: omap2_mcspi rxdma bugfix
Eero Nurkkala [Wed, 29 Jul 2009 22:02:12 +0000 (15:02 -0700)]
spi: omap2_mcspi rxdma bugfix

When data is read through DMA, the last element must be read separately
through the RX register.  It cannot be transferred by the DMA.  For
further details see e.g.  OMAP35x TRM (table 19-16).

Without the fix the driver causes extra clocks to be clocked to the bus
after DMA RX operations.  This can cause interesting behaviour with some
devices.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: Eero Nurkkala <ext-eero.nurkkala@nokia.com>
[aaro.koskinen@nokia.com: Simplified the patch while keeping the idea.]
Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>