firefly-linux-kernel-4.4.55.git
13 years agoext4: wait for writeback to complete while making pages writable
Darrick J. Wong [Wed, 18 May 2011 17:55:20 +0000 (13:55 -0400)]
ext4: wait for writeback to complete while making pages writable

In order to stabilize pages during disk writes, ext4_page_mkwrite must
wait for writeback operations to complete before making a page
writable.  Furthermore, the function must return locked pages, and
recheck the writeback status if the page lock is ever dropped.  The
"someone could wander in" part of this patch was suggested by Chris
Mason.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: clean up some wait_on_page_writeback calls
Darrick J. Wong [Wed, 18 May 2011 17:53:20 +0000 (13:53 -0400)]
ext4: clean up some wait_on_page_writeback calls

wait_on_page_writeback already checks the writeback bit, so callers of it
needn't do that test.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: don't warn about mnt_count if it has been disabled
Tao Ma [Wed, 18 May 2011 17:29:57 +0000 (13:29 -0400)]
ext4: don't warn about mnt_count if it has been disabled

Currently, if we mkfs a new ext4 volume with s_max_mnt_count set to
zero, and mount it for the first time, we will get the warning:

maximal mount count reached, running e2fsck is recommended

It is really misleading. So change the check so that it won't warn in
that case.

Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: ext4_ext_convert_to_initialized bug found in extended FSX testing
Allison Henderson [Mon, 16 May 2011 14:11:09 +0000 (10:11 -0400)]
ext4: ext4_ext_convert_to_initialized bug found in extended FSX testing

This patch addresses bugs found while testing punch hole
with the fsx test.  The patch corrects the number of blocks
that are zeroed out while splitting an extent, and also corrects
the return value to return the number of blocks split out, instead
of the number of blocks zeroed out.

This patch has been tested in addition to the following patches:
[Ext4 punch hole v7]
[XFS Tests Punch Hole 1/1 v2] Add Punch Hole Testing to FSX

The test ran successfully for 24 hours.

Signed-off-by: Allison Henderson <achender@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: fix oops in ext4_quota_off()
Amir Goldstein [Mon, 16 May 2011 13:59:13 +0000 (09:59 -0400)]
ext4: fix oops in ext4_quota_off()

If quota is not enabled when ext4_quota_off() is called, we must not
dereference quota file inode since it is NULL.  Check properly for
this.

This fixes a bug in commit 21f976975cbe (ext4: remove unnecessary
[cm]time update of quota file), which was merged for 2.6.39-rc3.

Reported-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: don't dereference null pointer when make_indexed_dir() fails
Allison Henderson [Sun, 15 May 2011 04:19:41 +0000 (00:19 -0400)]
ext4: don't dereference null pointer when make_indexed_dir() fails

Fix for a null pointer bug found while running punch hole tests

Signed-off-by: Allison Henderson <achender@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: remove alloc_semp
Amir Goldstein [Tue, 10 May 2011 01:52:36 +0000 (21:52 -0400)]
ext4: remove alloc_semp

After taking care of all group init races, all that remains is to
remove alloc_semp from ext4_allocation_context and ext4_buddy structs.

Signed-off-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: teach ext4_mb_init_cache() to skip uptodate buddy caches
Amir Goldstein [Tue, 10 May 2011 01:49:42 +0000 (21:49 -0400)]
ext4: teach ext4_mb_init_cache() to skip uptodate buddy caches

After online resize which adds new groups, some of the groups
in a buddy page may be initialized and uptodate, while other
(new ones) may be uninitialized.

The indication for init of new block groups is when ext4_mb_init_cache()
is called with an uptodate buddy page. In this case, initialized groups
on that buddy page must be skipped when initializing the buddy cache.

Signed-off-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: synchronize ext4_mb_init_group() with buddy page lock
Amir Goldstein [Tue, 10 May 2011 01:48:13 +0000 (21:48 -0400)]
ext4: synchronize ext4_mb_init_group() with buddy page lock

The old routines ext4_mb_[get|put]_buddy_cache_lock(), which used
to take grp->alloc_sem for all groups on the buddy page have been
replaced with the routines ext4_mb_[get|put]_buddy_page_lock().

The new routines take both buddy and bitmap page locks to protect
against concurrent init of groups on the same buddy page.

The GROUP_NEED_INIT flag is tested again under page lock to check
if the group was initialized by another caller.

Signed-off-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: implement ext4_add_groupblocks() by freeing blocks
Amir Goldstein [Tue, 10 May 2011 01:40:01 +0000 (21:40 -0400)]
ext4: implement ext4_add_groupblocks() by freeing blocks

The old imlementation used to take grp->alloc_sem and set the
GROUP_NEED_INIT flag, so that the buddy cache would be reloaded.

The new implementation updates the buddy cache by freeing the added
blocks and making them available for use, so there is no need to
reload the buddy cache and there is no need to take grp->alloc_sem.

Signed-off-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: remove unneeded ext4_journal_get_undo_access
Theodore Ts'o [Mon, 9 May 2011 14:58:45 +0000 (10:58 -0400)]
ext4: remove unneeded ext4_journal_get_undo_access

The block allocation code used to use jbd2_journal_get_undo_access as
a way to make changes that wouldn't show up until the commit took
place.  The new multi-block allocation code has a its own way of
preventing newly freed blocks from getting reused until the commit
takes place (it avoids updating the buddy bitmaps until the commit is
done), so we don't need to use jbd2_journal_get_undo_access(), which
has extra overhead compared to jbd2_journal_get_write_access().

There was one last vestigal use of ext4_journal_get_undo_access() in
ext4_add_groupblocks(); change it to use ext4_journal_get_write_access()
and then remove the ext4_journal_get_undo_access() support.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: move ext4_add_groupblocks() to mballoc.c
Amir Goldstein [Mon, 9 May 2011 14:46:41 +0000 (10:46 -0400)]
ext4: move ext4_add_groupblocks() to mballoc.c

In preparation for the next patch, the function ext4_add_groupblocks()
is moved to mballoc.c, where it could use some static functions.

Signed-off-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: remove redundant #ifdef in super.c
Amerigo Wang [Mon, 9 May 2011 14:30:41 +0000 (10:30 -0400)]
ext4: remove redundant #ifdef in super.c

There is already an #ifdef CONFIG_QUOTA some lines above,
so this one is totally useless.

Signed-off-by: WANG Cong <amwang@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: remove redundant check for first_not_zeroed in ext4_register_li_request
Tao Ma [Mon, 9 May 2011 14:28:41 +0000 (10:28 -0400)]
ext4: remove redundant check for first_not_zeroed in ext4_register_li_request

We have checked first_not_zeroed == ngroups already above, so remove
this redundant check.

sbi->s_li_request = NULL above is also removed since it is NULL
already.

Cc: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: use s_inodes_per_block directly in __ext4_get_inode_loc
Tao Ma [Mon, 9 May 2011 14:26:41 +0000 (10:26 -0400)]
ext4: use s_inodes_per_block directly in __ext4_get_inode_loc

In __ext4_get_inode_loc, we calculate inodes_per_block every time by
EXT4_BLOCK_SIZE(sb) / EXT4_INODE_SIZE(sb).  AFAICS, this function is a
hot path for ext4, so we'd better use s_inodes_per_block directly
instead of calculating every time.

Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: use EXT4FS_DEBUG instead of EXT4_DEBUG in fsync.c
Tao Ma [Mon, 9 May 2011 14:25:54 +0000 (10:25 -0400)]
ext4: use EXT4FS_DEBUG instead of EXT4_DEBUG in fsync.c

We have EXT4FS_DEBUG for some old debug and CONFIG_EXT4_DEBUG
for the new mballoc debug, but there isn't any EXT4_DEBUG.

As CONFIG_EXT4_DEBUG seems to be only used in mballoc, use
EXT4FS_DEBUG in fsync.c.

[ It doesn't really matter; although I'm including this commit for
  consistency's sake.  The whole point of the #ifdef's is to disable
  the debugging code.  In general you're not going to want to enable
  all of the code protected by EXT4FS_DEBUG at the same time.  -- Ted ]

Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agojbd2: only print the debugging information for tid wraparound once
Theodore Ts'o [Sun, 8 May 2011 23:37:54 +0000 (19:37 -0400)]
jbd2: only print the debugging information for tid wraparound once

If we somehow wrap, we don't want to keep printing the warning message
over and over again.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agojbd2: Fix forever sleeping process in do_get_write_access()
Jan Kara [Sun, 8 May 2011 23:09:53 +0000 (19:09 -0400)]
jbd2: Fix forever sleeping process in do_get_write_access()

In do_get_write_access() we wait on BH_Unshadow bit for buffer to get
from shadow state. The waking code in journal_commit_transaction() has
a bug because it does not issue a memory barrier after the buffer is
moved from the shadow state and before wake_up_bit() is called. Thus a
waitqueue check can happen before the buffer is actually moved from
the shadow state and waiting process may never be woken. Fix the
problem by issuing proper barrier.

Reported-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: reimplement convert and split_unwritten
Yongqiang Yang [Tue, 3 May 2011 16:25:07 +0000 (12:25 -0400)]
ext4: reimplement convert and split_unwritten

Reimplement ext4_ext_convert_to_initialized() and
ext4_split_unwritten_extents() using ext4_split_extent()

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Tested-by: Allison Henderson <achender@linux.vnet.ibm.com>
13 years agoext4: add ext4_split_extent_at() and ext4_split_extent()
Yongqiang Yang [Tue, 3 May 2011 16:23:07 +0000 (12:23 -0400)]
ext4: add ext4_split_extent_at() and ext4_split_extent()

Add two functions: ext4_split_extent_at(), which splits an extent into
two extents at given logical block, and ext4_split_extent() which
splits an extent into three extents.

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Tested-by: Allison Henderson <achender@linux.vnet.ibm.com>
13 years agoext4: add a function merging extents right and left
Yongqiang Yang [Tue, 3 May 2011 15:45:29 +0000 (11:45 -0400)]
ext4: add a function merging extents right and left

1) Rename ext4_ext_try_to_merge() to ext4_ext_try_to_merge_right().

2) Add a new function ext4_ext_try_to_merge() which tries to merge
   an extent both left and right.

3) Use the new function in ext4_ext_convert_unwritten_endio() and
   ext4_ext_insert_extent().

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Tested-by: Allison Henderson <achender@linux.vnet.ibm.com>
13 years agoext4: fix deadlock in ext4_symlink() in ENOSPC conditions
Jan Kara [Tue, 3 May 2011 15:12:58 +0000 (11:12 -0400)]
ext4: fix deadlock in ext4_symlink() in ENOSPC conditions

ext4_symlink() cannot call __page_symlink() with transaction open.
__page_symlink() calls ext4_write_begin() which can wait for
transaction commit if we are running out of space thus causing a
deadlock. Also error recovery in ext4_truncate_failed_write() does not
count with the transaction being already started (although I'm not
aware of any particular deadlock here).

Fix the problem by stopping a transaction before calling
__page_symlink() (we have to be careful and put inode to orphan list
so that it gets deleted in case of crash) and starting another one
after __page_symlink() returns for addition of symlink into a
directory.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: Fix fs corruption when make_indexed_dir() fails
Jan Kara [Tue, 3 May 2011 15:05:55 +0000 (11:05 -0400)]
ext4: Fix fs corruption when make_indexed_dir() fails

When make_indexed_dir() fails (e.g. because of ENOSPC) after it has
allocated block for index tree root, we did not properly mark all
changed buffers dirty.  This lead to only some of these buffers being
written out and thus effectively corrupting the directory.

Fix the issue by marking all changed data dirty even in the error
failure case.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: set extents flag when migrating file to use extents
Theodore Ts'o [Tue, 3 May 2011 13:34:42 +0000 (09:34 -0400)]
ext4: set extents flag when migrating file to use extents

Fix a typo that was introduced in commit 07a038245b (in 2.6.36) which
caused the extents flag not to be set at the conclusion of converting
an inode to use extents.

Reported-by: Peter Uchno <peter.uchno@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agojbd2: fix fsync() tid wraparound bug
Theodore Ts'o [Sun, 1 May 2011 22:16:26 +0000 (18:16 -0400)]
jbd2: fix fsync() tid wraparound bug

If an application program does not make any changes to the indirect
blocks or extent tree, i_datasync_tid will not get updated.  If there
are enough commits (i.e., 2**31) such that tid_geq()'s calculations
wrap, and there isn't a currently active transaction at the time of
the fdatasync() call, this can end up triggering a BUG_ON in
fs/jbd2/commit.c:

J_ASSERT(journal->j_running_transaction != NULL);

It's pretty rare that this can happen, since it requires the use of
fdatasync() plus *very* frequent and excessive use of fsync().  But
with the right workload, it can.

We fix this by replacing the use of tid_geq() with an equality test,
since there's only one valid transaction id that we is valid for us to
wait until it is commited: namely, the currently running transaction
(if it exists).

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: remove obsolete mount options from ext4's documentation
Theodore Ts'o [Sun, 1 May 2011 22:14:26 +0000 (18:14 -0400)]
ext4: remove obsolete mount options from ext4's documentation

The block reservation code from ext3 was removed long ago...

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: remove dead code in ext4_has_free_blocks()
Shaohua Li [Sun, 1 May 2011 22:11:18 +0000 (18:11 -0400)]
ext4: remove dead code in ext4_has_free_blocks()

percpu_counter_sum_positive() never returns a negative value.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: ignore errors when issuing discards
Theodore Ts'o [Sat, 30 Apr 2011 17:47:24 +0000 (13:47 -0400)]
ext4: ignore errors when issuing discards

This is an effective revert of commit a30eec2a8: "ext4: stop issuing
discards if not supported by device".  The problem is that there are
some devices that may return errors in response to a discard request
some times but not others.  (One example would be a hybrid dm device
which concatenates an SSD and an HDD device).

By this logic, I also removed the error checking from ext4's FITRIM
code; so that an error from a discard will not stop the FITRIM from
trying to trim the rest of the file system.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: don't set PageUptodate in ext4_end_bio()
Curt Wohlgemuth [Sat, 30 Apr 2011 17:26:26 +0000 (13:26 -0400)]
ext4: don't set PageUptodate in ext4_end_bio()

In the bio completion routine, we should not be setting
PageUptodate at all -- it's set at sys_write() time, and is
unaffected by success/failure of the write to disk.

This can cause a page corruption bug when the file system's
block size is less than the architecture's VM page size.

if we have only written a single block -- we might end up
setting the page's PageUptodate flag, indicating that page
is completely read into memory, which may not be true.
This could cause subsequent reads to get bad data.

This commit also takes the opportunity to clean up error
handling in ext4_end_bio(), and remove some extraneous code:

   - fixes ext4_end_bio() to set AS_EIO in the
     page->mapping->flags on error, which was left out by
     mistake.  This is needed so that fsync() will
     return an error if there was an I/O error.
   - remove the clear_buffer_dirty() call on unmapped
     buffers for each page.
   - consolidate page/buffer error handling in a single
     section.

Signed-off-by: Curt Wohlgemuth <curtw@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reported-by: Jim Meyering <jim@meyering.net>
Reported-by: Hugh Dickins <hughd@google.com>
Cc: Mingming Cao <cmm@us.ibm.com>
13 years agoext4: check for ext[23] file system features when mounting as ext[23]
Theodore Ts'o [Mon, 18 Apr 2011 21:29:14 +0000 (17:29 -0400)]
ext4: check for ext[23] file system features when mounting as ext[23]

Provide better emulation for ext[23] mode by enforcing that the file
system does not have any unsupported file system features as defined
by ext[23] when emulating the ext[23] file system driver when
CONFIG_EXT4_USE_FOR_EXT23 is defined.

This causes the file system type information in /proc/mounts to be
correct for the automatically mounted root file system.  This also
means that "mount -t ext2 /dev/sda /mnt" will fail if /dev/sda
contains an ext3 or ext4 file system, just as one would expect if the
original ext2 file system driver were in use.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: release page cache in ext4_mb_load_buddy error path
Yang Ruirui [Sat, 16 Apr 2011 23:17:48 +0000 (19:17 -0400)]
ext4: release page cache in ext4_mb_load_buddy error path

Add missing page_cache_release in the error path of ext4_mb_load_buddy

Signed-off-by: Yang Ruirui <ruirui.r.yang@tieto.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
13 years agoLinux 2.6.39-rc3
Linus Torvalds [Tue, 12 Apr 2011 00:21:51 +0000 (17:21 -0700)]
Linux 2.6.39-rc3

13 years agoMerge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Mon, 11 Apr 2011 22:48:57 +0000 (15:48 -0700)]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: use proper interfaces for on-stack plugging
  xfs: fix xfs_debug warnings
  xfs: fix variable set but not used warnings
  xfs: convert log tail checking to a warning
  xfs: catch bad block numbers freeing extents.
  xfs: push the AIL from memory reclaim and periodic sync
  xfs: clean up code layout in xfs_trans_ail.c
  xfs: convert the xfsaild threads to a workqueue
  xfs: introduce background inode reclaim work
  xfs: convert ENOSPC inode flushing to use new syncd workqueue
  xfs: introduce a xfssyncd workqueue
  xfs: fix extent format buffer allocation size
  xfs: fix unreferenced var error in xfs_buf.c

Also, applied patch from Tony Luck that fixes ia64:
  xfs_destroy_workqueues() should not be tagged with__exit
in the branch before merging.

13 years agoxfs_destroy_workqueues() should not be tagged with__exit
Luck, Tony [Mon, 11 Apr 2011 19:06:12 +0000 (12:06 -0700)]
xfs_destroy_workqueues() should not be tagged with__exit

ia64 throws away .exit sections for the built-in CONFIG case, so routines
that are used in other circumstances should not be tagged as __exit.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Linus Torvalds [Mon, 11 Apr 2011 22:45:47 +0000 (15:45 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/tytso/ext4

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix data corruption regression by reverting commit 6de9843dab3f
  ext4: Allow indirect-block file to grow the file size to max file size
  ext4: allow an active handle to be started when freezing
  ext4: sync the directory inode in ext4_sync_parent()
  ext4: init timer earlier to avoid a kernel panic in __save_error_info
  jbd2: fix potential memory leak on transaction commit
  ext4: fix a double free in ext4_register_li_request
  ext4: fix credits computing for indirect mapped files
  ext4: remove unnecessary [cm]time update of quota file
  jbd2: move bdget out of critical section

13 years agoMerge branch 'for-2.6.39' of git://linux-nfs.org/~bfields/linux
Linus Torvalds [Mon, 11 Apr 2011 22:45:17 +0000 (15:45 -0700)]
Merge branch 'for-2.6.39' of git://linux-nfs.org/~bfields/linux

* 'for-2.6.39' of git://linux-nfs.org/~bfields/linux:
  nfsd4: fix oops on lock failure
  nfsd: fix auth_domain reference leak on nlm operations

13 years agoMerge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6
Linus Torvalds [Mon, 11 Apr 2011 22:44:38 +0000 (15:44 -0700)]
Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6

* 'spi/merge' of git://git.secretlab.ca/git/linux-2.6:
  dt/fsldma: fix build warning caused by of_platform_device changes
  spi: Fix race condition in stop_queue()
  gpio/pch_gpio: Fix output value of pch_gpio_direction_output()
  gpio/ml_ioh_gpio: Fix output value of ioh_gpio_direction_output()
  gpio/pca953x: fix error handling path in probe() call

13 years agopci: fix PCI bus allocation alignment handling
Linus Torvalds [Mon, 11 Apr 2011 17:53:11 +0000 (10:53 -0700)]
pci: fix PCI bus allocation alignment handling

In commit 13583b16592a ("PCI: refactor io size calculation code") Ram
had a thinko in the refactorization of the code: the end result used the
variable 'align' for the bus alignment, but the original code used
'min_align'.

Since then, another use of that 'align' variable got introduced by
commit c8adf9a3e873 ("PCI: pre-allocate additional resources to devices
only after successful allocation of essential resources.")

Fix both of those uses to use 'min_align' as they should.

Daniel Hellstrom <daniel@gaisler.com>
Acked-by: Ram Pai <linuxram@us.ibm.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Mon, 11 Apr 2011 14:27:24 +0000 (07:27 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (34 commits)
  net: Add support for SMSC LAN9530, LAN9730 and LAN89530
  mlx4_en: Restoring RX buffer pointer in case of failure
  mlx4: Sensing link type at device initialization
  ipv4: Fix "Set rt->rt_iif more sanely on output routes."
  MAINTAINERS: add entry for Xen network backend
  be2net: Fix suspend/resume operation
  be2net: Rename some struct members for clarity
  pppoe: drop PPPOX_ZOMBIEs in pppoe_flush_dev
  dsa/mv88e6131: add support for mv88e6085 switch
  ipv6: Enable RFS sk_rxhash tracking for ipv6 sockets (v2)
  be2net: Fix a potential crash during shutdown.
  bna: Fix for handling firmware heartbeat failure
  can: mcp251x: Allow pass IRQ flags through platform data.
  smsc911x: fix mac_lock acquision before calling smsc911x_mac_read
  iwlwifi: accept EEPROM version 0x423 for iwl6000
  rt2x00: fix cancelling uninitialized work
  rtlwifi: Fix some warnings/bugs
  p54usb: IDs for two new devices
  wl12xx: fix potential buffer overflow in testmode nvs push
  zd1211rw: reset rx idle timer from tasklet
  ...

13 years agodt/fsldma: fix build warning caused by of_platform_device changes
Ira W. Snyder [Thu, 7 Apr 2011 17:33:03 +0000 (10:33 -0700)]
dt/fsldma: fix build warning caused by of_platform_device changes

Commit 000061245a6797d542854106463b6b20fbdcb12e, "dt/powerpc:
Eliminate users of of_platform_{,un}register_driver" forgot to convert
the type of structure passed into platform_device_register() when it
was converted from of_platform_device_register. Fix it.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
13 years agoext4: fix data corruption regression by reverting commit 6de9843dab3f
Theodore Ts'o [Mon, 11 Apr 2011 02:30:07 +0000 (22:30 -0400)]
ext4: fix data corruption regression by reverting commit 6de9843dab3f

Revert commit 6de9843dab3f2a1d4d66d80aa9e5782f80977d20, since it
caused a data corruption regression with BitTorrent downloads.  Thanks
to Damien for discovering and bisecting to find the problem commit.

https://bugzilla.kernel.org/show_bug.cgi?id=32972

Reported-by: Damien Grassart <damien@grassart.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: Allow indirect-block file to grow the file size to max file size
Kazuya Mio [Mon, 11 Apr 2011 02:06:36 +0000 (22:06 -0400)]
ext4: Allow indirect-block file to grow the file size to max file size

We can create 4402345721856 byte file with indirect block mapping.
However, if we grow an indirect-block file to the size with ftruncate(),
we can see an ext4 warning. The following patch fixes this problem.

How to reproduce:
# dd if=/dev/zero of=/mnt/mp1/hoge bs=1 count=0 seek=4402345721856
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.000221428 s, 0.0 kB/s
# tail -n 1 /var/log/messages
Nov 25 15:10:27 test kernel: EXT4-fs warning (device sda8): ext4_block_to_path:345: block 1074791436 > max in inode 12

Signed-off-by: Kazuya Mio <k-mio@sx.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agoext4: allow an active handle to be started when freezing
Yongqiang Yang [Mon, 11 Apr 2011 02:06:07 +0000 (22:06 -0400)]
ext4: allow an active handle to be started when freezing

ext4_journal_start_sb() should not prevent an active handle from being
started due to s_frozen.  Otherwise, deadlock is easy to happen, below
is a situation.

================================================
     freeze         |       truncate
================================================
                    |  ext4_ext_truncate()
    freeze_super()  |   starts a handle
    sets s_frozen   |
                    |  ext4_ext_truncate()
                    |  holds i_data_sem
  ext4_freeze()     |
  waits for updates |
                    |  ext4_free_blocks()
                    |  calls dquot_free_block()
                    |
                    |  dquot_free_blocks()
                    |  calls ext4_dirty_inode()
                    |
                    |  ext4_dirty_inode()
                    |  trys to start an active
                    |  handle
                    |
                    |  block due to s_frozen
================================================

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reported-by: Amir Goldstein <amir73il@users.sf.net>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
13 years agoext4: sync the directory inode in ext4_sync_parent()
Curt Wohlgemuth [Mon, 11 Apr 2011 02:05:31 +0000 (22:05 -0400)]
ext4: sync the directory inode in ext4_sync_parent()

ext4 has taken the stance that, in the absence of a journal,
when an fsync/fdatasync of an inode is done, the parent
directory should be sync'ed if this inode entry is new.
ext4_sync_parent(), which implements this, does indeed sync
the dirent pages for parent directories, but it does not
sync the directory *inode*.  This patch fixes this.

Also now return error status from ext4_sync_parent().

I tested this using a power fail test, which panics a
machine running a file server getting requests from a
client.  Without this patch, on about every other test run,
the server is missing many, many files that had been synced.
With this patch, on > 6 runs, I see zero files being lost.

Google-Bug-Id: 4179519
Signed-off-by: Curt Wohlgemuth <curtw@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
13 years agonet: Add support for SMSC LAN9530, LAN9730 and LAN89530
Steve Glendinning [Mon, 11 Apr 2011 01:59:27 +0000 (18:59 -0700)]
net: Add support for SMSC LAN9530, LAN9730 and LAN89530

This patch adds support for SMSC's LAN9530, LAN9730 and LAN89530 USB
ethernet controllers to the existing smsc95xx driver by adding
their new USB VID/PID pairs.

Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Sun, 10 Apr 2011 16:56:10 +0000 (09:56 -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: hda - Don't query connections for widgets have no connections
  ALSA: HDA: Fix single internal mic on ALC275 (Sony Vaio VPCSB1C5E)
  ALSA: hda - HDMI: Fix MCP7x audio infoframe checksums
  ALSA: usb-audio: define another USB ID for a buggy USB MIDI cable
  ALSA: HDA: Fix dock mic for Lenovo X220-tablet
  ASoC: format_register_str: Don't clip register values
  ASoC: PXA: Fix oops in __pxa2xx_pcm_prepare
  ASoC: zylonite: set .codec_dai_name in initializer

13 years agonfsd4: fix oops on lock failure
J. Bruce Fields [Mon, 28 Mar 2011 07:15:09 +0000 (15:15 +0800)]
nfsd4: fix oops on lock failure

Lock stateid's can have access_bmap 0 if they were only partially
initialized (due to a failed lock request); handle that case in
free_generic_stateid.

------------[ cut here ]------------
kernel BUG at fs/nfsd/nfs4state.c:380!
invalid opcode: 0000 [#1] SMP
last sysfs file: /sys/kernel/mm/ksm/run
Modules linked in: nfs fscache md4 nls_utf8 cifs ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat bridge stp llc nfsd lockd nfs_acl auth_rpcgss sunrpc ipv6 ppdev parport_pc parport pcnet32 mii pcspkr microcode i2c_piix4 BusLogic floppy [last unloaded: mperf]

Pid: 1468, comm: nfsd Not tainted 2.6.38+ #120 VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform
EIP: 0060:[<e24f180d>] EFLAGS: 00010297 CPU: 0
EIP is at nfs4_access_to_omode+0x1c/0x29 [nfsd]
EAX: ffffffff EBX: dd758120 ECX: 00000000 EDX: 00000004
ESI: dd758120 EDI: ddfe657c EBP: dd54dde0 ESP: dd54dde0
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process nfsd (pid: 1468, ti=dd54c000 task=ddc92580 task.ti=dd54c000)
Stack:
 dd54ddf0 e24f19ca 00000000 ddfe6560 dd54de08 e24f1a5d dd758130 deee3a20
 ddfe6560 31270000 dd54df1c e24f52fd 0000000f dd758090 e2505dd0 0be304cf
 dbb51d68 0000000e ddfe657c ddcd8020 dd758130 dd758128 dd7580d8 dd54de68
Call Trace:
 [<e24f19ca>] free_generic_stateid+0x1c/0x3e [nfsd]
 [<e24f1a5d>] release_lockowner+0x71/0x8a [nfsd]
 [<e24f52fd>] nfsd4_lock+0x617/0x66c [nfsd]
 [<e24e57b6>] ? nfsd_setuser+0x199/0x1bb [nfsd]
 [<e24e056c>] ? nfsd_setuser_and_check_port+0x65/0x81 [nfsd]
 [<c07a0052>] ? _cond_resched+0x8/0x1c
 [<c04ca61f>] ? slab_pre_alloc_hook.clone.33+0x23/0x27
 [<c04cac01>] ? kmem_cache_alloc+0x1a/0xd2
 [<c04835a0>] ? __call_rcu+0xd7/0xdd
 [<e24e0dfb>] ? fh_verify+0x401/0x452 [nfsd]
 [<e24f0b61>] ? nfsd4_encode_operation+0x52/0x117 [nfsd]
 [<e24ea0d7>] ? nfsd4_putfh+0x33/0x3b [nfsd]
 [<e24f4ce6>] ? nfsd4_delegreturn+0xd4/0xd4 [nfsd]
 [<e24ea2c9>] nfsd4_proc_compound+0x1ea/0x33e [nfsd]
 [<e24de6ee>] nfsd_dispatch+0xd1/0x1a5 [nfsd]
 [<e1d6e1c7>] svc_process_common+0x282/0x46f [sunrpc]
 [<e1d6e578>] svc_process+0xdc/0xfa [sunrpc]
 [<e24de0fa>] nfsd+0xd6/0x115 [nfsd]
 [<e24de024>] ? nfsd_shutdown+0x24/0x24 [nfsd]
 [<c0454322>] kthread+0x62/0x67
 [<c04542c0>] ? kthread_worker_fn+0x114/0x114
 [<c07a6ebe>] kernel_thread_helper+0x6/0x10
Code: eb 05 b8 00 00 27 4f 8d 65 f4 5b 5e 5f 5d c3 83 e0 03 55 83 f8 02 89 e5 74 17 83 f8 03 74 05 48 75 09 eb 09 b8 02 00 00 00 eb 0b <0f> 0b 31 c0 eb 05 b8 01 00 00 00 5d c3 55 89 e5 57 56 89 d6 8d
EIP: [<e24f180d>] nfs4_access_to_omode+0x1c/0x29 [nfsd] SS:ESP 0068:dd54dde0
---[ end trace 2b0bf6c6557cb284 ]---

The trace route is:

 -> nfsd4_lock()
   -> if (lock->lk_is_new) {
     -> alloc_init_lock_stateid()

        3739: stp->st_access_bmap = 0;

   ->if (status && lock->lk_is_new && lock_sop)
     -> release_lockowner()
      -> free_generic_stateid()
       -> nfs4_access_bmap_to_omode()
          -> nfs4_access_to_omode()

        380: BUG();   *****

This problem was introduced by 0997b173609b9229ece28941c118a2a9b278796e.

Reported-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
Tested-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
13 years agoMerge git://git.infradead.org/mtd-2.6
Linus Torvalds [Sat, 9 Apr 2011 20:23:50 +0000 (13:23 -0700)]
Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6:
  mtd: atmel_nand: use CPU I/O when buffer is in vmalloc(ed) region
  mtd: atmel_nand: modify test case for using DMA operations
  mtd: atmel_nand: fix support for CPUs that do not support DMA access
  mtd: atmel_nand: trivial: change DMA usage information trace
  mtd: mtdswap: fix printk format warning

13 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Sat, 9 Apr 2011 08:05:53 +0000 (10:05 +0200)]
Merge branch 'fix/hda' into for-linus

13 years agoMerge branch 'fix/asoc' into for-linus
Takashi Iwai [Sat, 9 Apr 2011 08:05:30 +0000 (10:05 +0200)]
Merge branch 'fix/asoc' into for-linus

13 years agoMerge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
Linus Torvalds [Fri, 8 Apr 2011 18:47:35 +0000 (11:47 -0700)]
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  NFS: Change initial mount authflavor only when server returns NFS4ERR_WRONGSEC
  NFS: Fix a signed vs. unsigned secinfo bug
  Revert "net/sunrpc: Use static const char arrays"

13 years agosignal.c: fix erroneous syscall kernel-doc
Randy Dunlap [Fri, 8 Apr 2011 17:53:46 +0000 (10:53 -0700)]
signal.c: fix erroneous syscall kernel-doc

Fix erroneous syscall kernel-doc comments in kernel/signal.c.

Reported-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
Linus Torvalds [Fri, 8 Apr 2011 14:36:14 +0000 (07:36 -0700)]
Merge branch 'for-linus' of git://git390.marist.edu/linux-2.6

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] compile fix for latest binutils
  [S390] cio: prevent purging of CCW devices in the online state
  [S390] qdio: fix init sequence
  [S390] Fix parameter passing for smp_switch_to_cpu()
  [S390] oprofile s390: prevent stack corruption

13 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux...
Linus Torvalds [Fri, 8 Apr 2011 14:35:17 +0000 (07:35 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-fs-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6:
  quota: Don't write quota info in dquot_commit()
  ext3: Fix writepage credits computation for ordered mode

13 years agoxfs: use proper interfaces for on-stack plugging
Christoph Hellwig [Wed, 30 Mar 2011 11:05:09 +0000 (11:05 +0000)]
xfs: use proper interfaces for on-stack plugging

Add proper blk_start_plug/blk_finish_plug pairs for the two places where
we issue buffer I/O, and remove the blk_flush_plug in xfs_buf_lock and
xfs_buf_iowait, given that context switches already flush the per-process
plugging lists.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
13 years agoxfs: fix xfs_debug warnings
Christoph Hellwig [Sat, 2 Apr 2011 18:13:40 +0000 (18:13 +0000)]
xfs: fix xfs_debug warnings

For a CONFIG_XFS_DEBUG=n build gcc complains about statements with no
effect in xfs_debug:

fs/xfs/quota/xfs_qm_syscalls.c: In function 'xfs_qm_scall_trunc_qfiles':
fs/xfs/quota/xfs_qm_syscalls.c:291:3: warning: statement with no effect

The reason for that is that the various new xfs message functions have a
return value which is never used, and in case of the non-debug build
xfs_debug the macro evaluates to a plain 0 which produces the above
warnings.  This can be fixed by turning xfs_debug into an inline function
instead of a macro, but in addition to that I've also changed all the
message helpers to return void as we never use their return values.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
13 years agoxfs: fix variable set but not used warnings
Christoph Hellwig [Mon, 4 Apr 2011 12:55:44 +0000 (12:55 +0000)]
xfs: fix variable set but not used warnings

GCC 4.6 now warnings about variables set but not used.  Fix the trivially
fixable warnings of this sort.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
13 years agomlx4_en: Restoring RX buffer pointer in case of failure
Yevgeny Petrilin [Wed, 6 Apr 2011 23:25:45 +0000 (23:25 +0000)]
mlx4_en: Restoring RX buffer pointer in case of failure

If not done, second attempt to open the RX ring would cause memory corruption.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agomlx4: Sensing link type at device initialization
Yevgeny Petrilin [Wed, 6 Apr 2011 23:24:42 +0000 (23:24 +0000)]
mlx4: Sensing link type at device initialization

When bringing the port up, performing a SENSE_PORT command
To try and check to which physical link type (IB or Ethernet) the physical
port is connected.
In case there is no valid link partner, the port will come up as its
supported default.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoxfs: convert log tail checking to a warning
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: convert log tail checking to a warning

On the Power platform, the log tail debug checks fire excessively
causing the system to panic early in testing. The debug checks are
known to be racy, though on x86_64 there is no evidence that they
trigger at all.

We want to keep the checks active on debug systems to alert us to
problems with log space accounting, but we need to reduce the impact
of a racy check on testing on the Power platform.

As a result, convert the ASSERT conditions to warnings, and
allow them to fire only once per filesystem mount. This will prevent
false positives from interfering with testing, whilst still
providing us with the indication that they may be a problem with log
space accounting should that occur.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
13 years agoxfs: catch bad block numbers freeing extents.
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: catch bad block numbers freeing extents.

A fuzzed filesystem crashed a kernel when freeing an extent with a
block number beyond the end of the filesystem. Convert all the debug
asserts in xfs_free_extent() to active checks so that we catch bad
extents and return that the filesytsem is corrupted rather than
crashing.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
13 years agoxfs: push the AIL from memory reclaim and periodic sync
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: push the AIL from memory reclaim and periodic sync

When we are short on memory, we want to expedite the cleaning of
dirty objects.  Hence when we run short on memory, we need to kick
the AIL flushing into action to clean as many dirty objects as
quickly as possible.  To implement this, sample the lsn of the log
item at the head of the AIL and use that as the push target for the
AIL flush.

Further, we keep items in the AIL that are dirty that are not
tracked any other way, so we can get objects sitting in the AIL that
don't get written back until the AIL is pushed. Hence to get the
filesystem to the idle state, we might need to push the AIL to flush
out any remaining dirty objects sitting in the AIL. This requires
the same push mechanism as the reclaim push.

This patch also renames xfs_trans_ail_tail() to xfs_ail_min_lsn() to
match the new xfs_ail_max_lsn() function introduced in this patch.
Similarly for xfs_trans_ail_push -> xfs_ail_push.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Alex Elder <aelder@sgi.com>
13 years agoxfs: clean up code layout in xfs_trans_ail.c
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: clean up code layout in xfs_trans_ail.c

This patch rearranges the location of functions in xfs_trans_ail.c
to remove the need for forward declarations of those functions in
preparation for adding new functions without the need for forward
declarations.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Alex Elder <aelder@sgi.com>
13 years agoxfs: convert the xfsaild threads to a workqueue
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: convert the xfsaild threads to a workqueue

Similar to the xfssyncd, the per-filesystem xfsaild threads can be
converted to a global workqueue and run periodically by delayed
works. This makes sense for the AIL pushing because it uses
variable timeouts depending on the work that needs to be done.

By removing the xfsaild, we simplify the AIL pushing code and
remove the need to spread the code to implement the threading
and pushing across multiple files.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
13 years agoxfs: introduce background inode reclaim work
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: introduce background inode reclaim work

Background inode reclaim needs to run more frequently that the XFS
syncd work is run as 30s is too long between optimal reclaim runs.
Add a new periodic work item to the xfs syncd workqueue to run a
fast, non-blocking inode reclaim scan.

Background inode reclaim is kicked by the act of marking inodes for
reclaim.  When an AG is first marked as having reclaimable inodes,
the background reclaim work is kicked. It will continue to run
periodically untill it detects that there are no more reclaimable
inodes. It will be kicked again when the first inode is queued for
reclaim.

To ensure shrinker based inode reclaim throttles to the inode
cleaning and reclaim rate but still reclaim inodes efficiently, make it kick the
background inode reclaim so that when we are low on memory we are
trying to reclaim inodes as efficiently as possible. This kick shoul
d not be necessary, but it will protect against failures to kick the
background reclaim when inodes are first dirtied.

To provide the rate throttling, make the shrinker pass do
synchronous inode reclaim so that it blocks on inodes under IO. This
means that the shrinker will reclaim inodes rather than just
skipping over them, but it does not adversely affect the rate of
reclaim because most dirty inodes are already under IO due to the
background reclaim work the shrinker kicked.

These two modifications solve one of the two OOM killer invocations
Chris Mason reported recently when running a stress testing script.
The particular workload trigger for the OOM killer invocation is
where there are more threads than CPUs all unlinking files in an
extremely memory constrained environment. Unlike other solutions,
this one does not have a performance impact on performance when
memory is not constrained or the number of concurrent threads
operating is <= to the number of CPUs.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
13 years agoxfs: convert ENOSPC inode flushing to use new syncd workqueue
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: convert ENOSPC inode flushing to use new syncd workqueue

On of the problems with the current inode flush at ENOSPC is that we
queue a flush per ENOSPC event, regardless of how many are already
queued. Thi can result in    hundreds of queued flushes, most of
which simply burn CPU scanned and do no real work. This simply slows
down allocation at ENOSPC.

We really only need one active flush at a time, and we can easily
implement that via the new xfs_syncd_wq. All we need to do is queue
a flush if one is not already active, then block waiting for the
currently active flush to complete. The result is that we only ever
have a single ENOSPC inode flush active at a time and this greatly
reduces the overhead of ENOSPC processing.

On my 2p test machine, this results in tests exercising ENOSPC
conditions running significantly faster - 042 halves execution time,
083 drops from 60s to 5s, etc - while not introducing test
regressions.

This allows us to remove the old xfssyncd threads and infrastructure
as they are no longer used.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
13 years agoxfs: introduce a xfssyncd workqueue
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: introduce a xfssyncd workqueue

All of the work xfssyncd does is background functionality. There is
no need for a thread per filesystem to do this work - it can al be
managed by a global workqueue now they manage concurrency
effectively.

Introduce a new gglobal xfssyncd workqueue, and convert the periodic
work to use this new functionality. To do this, use a delayed work
construct to schedule the next running of the periodic sync work
for the filesystem. When the sync work is complete, queue a new
delayed work for the next running of the sync work.

For laptop mode, we wait on completion for the sync works, so ensure
that the sync work queuing interface can flush and wait for work to
complete to enable the work queue infrastructure to replace the
current sequence number and wakeup that is used.

Because the sync work does non-trivial amounts of work, mark the
new work queue as CPU intensive.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
13 years agoxfs: fix extent format buffer allocation size
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: fix extent format buffer allocation size

When formatting an inode item, we have to allocate a separate buffer
to hold extents when there are delayed allocation extents on the
inode and it is in extent format. The allocation size is derived
from the in-core data fork representation, which accounts for
delayed allocation extents, while the on-disk representation does
not contain any delalloc extents.

As a result of this mismatch, the allocated buffer can be far larger
than needed to hold the real extent list which, due to the fact the
inode is in extent format, is limited to the size of the literal
area of the inode. However, we can have thousands of delalloc
extents, resulting in an allocation size orders of magnitude larger
than is needed to hold all the real extents.

Fix this by limiting the size of the buffer being allocated to the
size of the literal area of the inodes in the filesystem (i.e. the
maximum size an inode fork can grow to).

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Alex Elder <aelder@sgi.com>
13 years agoipv4: Fix "Set rt->rt_iif more sanely on output routes."
OGAWA Hirofumi [Thu, 7 Apr 2011 21:04:08 +0000 (14:04 -0700)]
ipv4: Fix "Set rt->rt_iif more sanely on output routes."

Commit 1018b5c01636c7c6bda31a719bda34fc631db29a ("Set rt->rt_iif more
sanely on output routes.")  breaks rt_is_{output,input}_route.

This became the cause to return "IP_PKTINFO's ->ipi_ifindex == 0".

To fix it, this does:

1) Add "int rt_route_iif;" to struct rtable

2) For input routes, always set rt_route_iif to same value as rt_iif

3) For output routes, always set rt_route_iif to zero.  Set rt_iif
   as it is done currently.

4) Change rt_is_{output,input}_route() to test rt_route_iif

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
Linus Torvalds [Thu, 7 Apr 2011 20:34:41 +0000 (13:34 -0700)]
Merge git://git./linux/kernel/git/wim/linux-2.6-watchdog

* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  watchdog: mpc8xxx_wdt: fix build

13 years agowatchdog: mpc8xxx_wdt: fix build
Peter Korsgaard [Wed, 30 Mar 2011 13:48:22 +0000 (15:48 +0200)]
watchdog: mpc8xxx_wdt: fix build

Since 1c48a5c93da6313 (dt: Eliminate of_platform_{,un}register_driver)
mpc8xxx_wdt no longer builds as it tries to refer to a 'match' variable
rather than ofdev->dev.of_match that it checks just before.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
13 years agoNFS: Change initial mount authflavor only when server returns NFS4ERR_WRONGSEC
Bryan Schumaker [Thu, 7 Apr 2011 20:02:20 +0000 (16:02 -0400)]
NFS: Change initial mount authflavor only when server returns NFS4ERR_WRONGSEC

When attempting an initial mount, we should only attempt other
authflavors if AUTH_UNIX receives a NFS4ERR_WRONGSEC error.
This allows other errors to be passed back to userspace programs.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
13 years agoMerge branch 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 7 Apr 2011 19:49:17 +0000 (12:49 -0700)]
Merge branch 'fbdev-fixes-for-linus' of git://git./linux/kernel/git/lethal/fbdev-2.6

* 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6:
  efifb: Add override for 11" Macbook Air 3,1
  efifb: Support overriding fields FW tells us with the DMI data.
  fb: Reduce priority of resource conflict message
  savagefb: Remove obsolete else clause in savage_setup_i2c_bus
  savagefb: Set up I2C based on chip family instead of card id
  savagefb: Replace magic register address with define
  drivers/video/bfin-lq035q1-fb.c: introduce missing kfree
  video: s3c-fb: fix checkpatch errors and warning
  efifb: support AMD Radeon HD 6490
  s3fb: fix Virge/GX2
  fbcon: Remove unused 'display *p' variable from fb_flashcursor()
  fbdev: sh_mobile_lcdcfb: fix module lock acquisition
  fbdev: sh_mobile_lcdcfb: add blanking support
  viafb: initialize margins correct
  viafb: refresh rate bug collection
  sh: mach-ap325rxa: move backlight control code
  sh: mach-ecovec24: support for main lcd backlight

13 years agoMerge branch 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 7 Apr 2011 19:49:01 +0000 (12:49 -0700)]
Merge branch 'rmobile-fixes-for-linus' of git://git./linux/kernel/git/lethal/sh-2.6

* 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  ARM: arch-shmobile: only run FSI init on respective boards
  ARM: arch-shmobile: only run HDMI init on respective boards
  ARM: mach-shmobile: Correctly check for CONFIG_MACH_MACKEREL

13 years agoMerge branch 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 7 Apr 2011 19:48:45 +0000 (12:48 -0700)]
Merge branch 'sh-fixes-for-linus' of git://git./linux/kernel/git/lethal/sh-2.6

* 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: select ARCH_NO_SYSDEV_OPS.
  sh: fix build error in board-sh7757lcr.c
  sh: landisk: Remove whitespace
  sh: landisk: Remove mv_nr_irqs
  sh: sh-sci: Fix double initialization by serial_console_setup
  serial: sh-sci: prevent setup of uninitialized serial console
  dma: shdma: add checking the DMAOR_AE in sh_dmae_err

13 years agoMerge branches 'x86-fixes-for-linus', 'sched-fixes-for-linus', 'timers-fixes-for...
Linus Torvalds [Thu, 7 Apr 2011 19:12:58 +0000 (12:12 -0700)]
Merge branches 'x86-fixes-for-linus', 'sched-fixes-for-linus', 'timers-fixes-for-linus', 'irq-fixes-for-linus' and 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86-32, fpu: Fix FPU exception handling on non-SSE systems
  x86, hibernate: Initialize mmu_cr4_features during boot
  x86-32, NUMA: Fix ACPI NUMA init broken by recent x86-64 change
  x86: visws: Fixup irq overhaul fallout

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Clean up rebalance_domains() load-balance interval calculation

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86/mrst/vrtc: Fix boot crash in mrst_rtc_init()
  rtc, x86/mrst/vrtc: Fix boot crash in rtc_read_alarm()

* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: Fix cpumask leak in __setup_irq()

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf probe: Fix listing incorrect line number with inline function
  perf probe: Fix to find recursively inlined function
  perf probe: Fix multiple --vars options behavior
  perf probe: Fix to remove redundant close
  perf probe: Fix to ensure function declared file

13 years agoMerge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Thu, 7 Apr 2011 18:36:44 +0000 (11:36 -0700)]
Merge branch 'staging-linus' of git://git./linux/kernel/git/gregkh/staging-2.6

* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: (28 commits)
  staging: usbip: bugfix for isochronous packets and optimization
  staging: usbip: bugfix add number of packets for isochronous frames
  staging: usbip: bugfixes related to kthread conversion
  staging: usbip: fix shutdown problems.
  staging: hv: Fix GARP not sent after Quick Migration
  staging: IIO: IMU: ADIS16400: Avoid using printk facility directly
  staging: IIO: IMU: ADIS16400: Fix product ID check, skip embedded revision number
  staging: IIO: IMU: ADIS16400: Make sure only enabled scan_elements are pushed into the ring
  staging: IIO: IMU: ADIS16400: Fix addresses of GYRO and ACCEL calibration offset
  staging: IIO: IMU: ADIS16400: Add delay after self test
  staging: IIO: IMU: ADIS16400: Fix up SPI messages cs_change behavior
  staging/rtl81*: build as loadable modules only
  staging: brcm80211: removed 'is_amsdu causing toss' log spam
  staging: brcm80211: fix for 'Short CCK' log spam
  staging: brcm80211: fix for 'AC_BE txop..' logs spammed problem
  staging: memrar: remove driver from tree
  staging: sep: remove last memrar remnants
  staging: fix hv_mouse build, needs delay.h
  staging: fix olpc_dcon build errors
  staging: sm7xx: fixed defines
  ...

Fix up trivial conflict in drivers/staging/memrar/memrar_handler.c
(deleted vs trivial spelling fixes)

13 years agoMerge branch 'kvm-updates/2.6.39' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Thu, 7 Apr 2011 18:33:04 +0000 (11:33 -0700)]
Merge branch 'kvm-updates/2.6.39' of git://git./virt/kvm/kvm

* 'kvm-updates/2.6.39' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: move and fix substitue search for missing CPUID entries
  KVM: fix XSAVE bit scanning
  KVM: Enable async page fault processing
  KVM: fix crash on irqfd deassign

13 years agoMerge branch 'for-linus' of git://git.infradead.org/ubifs-2.6
Linus Torvalds [Thu, 7 Apr 2011 18:31:03 +0000 (11:31 -0700)]
Merge branch 'for-linus' of git://git.infradead.org/ubifs-2.6

* 'for-linus' of git://git.infradead.org/ubifs-2.6:
  UBI: do not select KALLSYMS_ALL
  UBI: do not compare array with NULL
  UBI: check if we are in RO mode in the erase routine
  UBIFS: fix debugging failure in dbg_check_space_info
  UBIFS: fix error path in dbg_debugfs_init_fs
  UBIFS: unify error path dbg_debugfs_init_fs
  UBIFS: do not select KALLSYMS_ALL
  UBIFS: fix assertion warnings
  UBIFS: fix oops on error path in read_pnode
  UBIFS: do not read flash unnecessarily

13 years agospi: Fix race condition in stop_queue()
Vasily Khoruzhick [Wed, 6 Apr 2011 14:49:15 +0000 (17:49 +0300)]
spi: Fix race condition in stop_queue()

There's a race condition in stop_queue() in some drivers -
if drv_data->queue is empty, but drv_data->busy is still set
(or opposite situation) stop_queue will return -EBUSY.
So fix loop condition to check that both drv_data->queue is empty
and drv_data->busy is not set.

This patch affects following drivers:
pxa2xx_spi
spi_bfin5xx
amba-pl022
dw_spi

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
13 years agoMerge commit 'v2.6.39-rc2' into spi/merge
Grant Likely [Thu, 7 Apr 2011 18:15:50 +0000 (11:15 -0700)]
Merge commit 'v2.6.39-rc2' into spi/merge

13 years agoMerge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6
Linus Torvalds [Thu, 7 Apr 2011 18:14:49 +0000 (11:14 -0700)]
Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6

* 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6:
  Fix common misspellings

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Thu, 7 Apr 2011 16:42:13 +0000 (09:42 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: Add support for CH Pro Throttle
  HID: hid-magicmouse: Increase evdev buffer size
  HID: add FF support for Logitech G25/G27
  HID: roccat: Add support for wireless variant of Pyra
  HID: Fix typo Keyoutch -> Keytouch
  HID: add support for Skycable 0x3f07 wireless presenter

13 years agofix build fail for hv_mouse indefine udelay
Youquan Song [Wed, 6 Apr 2011 06:35:12 +0000 (14:35 +0800)]
fix build fail for hv_mouse indefine udelay

Fix build failure issue for hv_mouse
When build 2.6.39-rc1 kernel, it will be blocked at build hv_mouse.

  drivers/staging/hv/hv_mouse.c: In function ‘ReleaseInputDevice’:
  drivers/staging/hv/hv_mouse.c:293: error: implicit declaration of function ‘udelay’

Signed-off-by: Youquan Song <youquan.song@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomm: avoid wrapping vm_pgoff in mremap()
Linus Torvalds [Thu, 7 Apr 2011 14:35:50 +0000 (07:35 -0700)]
mm: avoid wrapping vm_pgoff in mremap()

The normal mmap paths all avoid creating a mapping where the pgoff
inside the mapping could wrap around due to overflow.  However, an
expanding mremap() can take such a non-wrapping mapping and make it
bigger and cause a wrapping condition.

Noticed by Robert Swiecki when running a system call fuzzer, where it
caused a BUG_ON() due to terminally confusing the vma_prio_tree code.  A
vma dumping patch by Hugh then pinpointed the crazy wrapped case.

Reported-and-tested-by: Robert Swiecki <robert@swiecki.net>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoALSA: hda - Don't query connections for widgets have no connections
Takashi Iwai [Thu, 7 Apr 2011 12:55:57 +0000 (14:55 +0200)]
ALSA: hda - Don't query connections for widgets have no connections

Fixes the kernel warnings with IDT codecs like
    hda_codec: connection list not available for 0x1e

Signed-off-by: Takashi Iwai <tiwai@suse.de>
13 years agoALSA: HDA: Fix single internal mic on ALC275 (Sony Vaio VPCSB1C5E)
David Henningsson [Thu, 7 Apr 2011 09:43:00 +0000 (11:43 +0200)]
ALSA: HDA: Fix single internal mic on ALC275 (Sony Vaio VPCSB1C5E)

In cases where there is only one internal mic connected to ADC 0x11,
alc275_setup_dual_adc won't handle the case, so we need to add the
ADC node to the array of candidates.

Cc: stable@kernel.org
BugLink: http://bugs.launchpad.net/bugs/752792
Reported-by: Vincenzo Pii
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
13 years agoALSA: hda - HDMI: Fix MCP7x audio infoframe checksums
Aaron Plattner [Thu, 7 Apr 2011 00:19:04 +0000 (17:19 -0700)]
ALSA: hda - HDMI: Fix MCP7x audio infoframe checksums

The MCP7x hardware computes the audio infoframe channel count
automatically, but requires the audio driver to set the audio
infoframe checksum manually via the Nv_VERB_SET_Info_Frame_Checksum
control verb.

When audio starts playing, nvhdmi_8ch_7x_pcm_prepare sets the checksum
to (0x71 - chan - chanmask).  For example, for 2ch audio, chan == 1
and chanmask == 0 so the checksum is set to 0x70.  When audio playback
finishes and the device is closed, nvhdmi_8ch_7x_pcm_close resets the
channel formats, causing the channel count to revert to 8ch.  Since
the checksum is not reset, the hardware starts generating audio
infoframes with invalid checksums.  This causes some displays to blank
the video.

Fix this by updating the checksum and channel mask when the device is
closed and also when it is first initialized.  In addition, make sure
that the channel mask is appropriate for an 8ch infoframe by setting
it to 0x13 (FL FR LFE FC RL RR RLC RRC).

Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
13 years agox86/mrst/vrtc: Fix boot crash in mrst_rtc_init()
Feng Tang [Thu, 7 Apr 2011 01:39:49 +0000 (09:39 +0800)]
x86/mrst/vrtc: Fix boot crash in mrst_rtc_init()

The sfi_mrtc_array[] only gets initialized when the sfi mrtc
table is parsed, so the vrtc_paddr should be initalized after it
too.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1302140389-27603-1-git-send-email-feng.tang@intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agortc, x86/mrst/vrtc: Fix boot crash in rtc_read_alarm()
Feng Tang [Thu, 7 Apr 2011 01:39:44 +0000 (09:39 +0800)]
rtc, x86/mrst/vrtc: Fix boot crash in rtc_read_alarm()

Commit f44f7f96a20 ("RTC: Initialize kernel state from RTC") caused a
boot regression on the MRST platform.

The reason is that rtc_device_register() calls rtc_read_alarm() after
that change, which function does not have all driver data set up yet.

The rtc-mrst driver needs to call dev_set_drvdata() before rtc_device_register()
gets called.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Acked-by: John Stultz <john.stultz@linaro.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1302140384-27571-1-git-send-email-feng.tang@intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agox86-32, fpu: Fix FPU exception handling on non-SSE systems
Hans Rosenfeld [Wed, 6 Apr 2011 16:06:43 +0000 (18:06 +0200)]
x86-32, fpu: Fix FPU exception handling on non-SSE systems

On 32bit systems without SSE (that is, they use FSAVE/FRSTOR for FPU
context switches), FPU exceptions in user mode cause Oopses, BUGs,
recursive faults and other nasty things:

fpu exception: 0000 [#1]
last sysfs file: /sys/power/state
Modules linked in: psmouse evdev pcspkr serio_raw [last unloaded: scsi_wait_scan]

Pid: 1638, comm: fxsave-32-excep Not tainted 2.6.35-07798-g58a992b-dirty #633 VP3-596B-DD/VT82C597
EIP: 0060:[<c1003527>] EFLAGS: 00010202 CPU: 0
EIP is at math_error+0x1b4/0x1c8
EAX: 00000003 EBX: cf9be7e0 ECX: 00000000 EDX: cf9c5c00
ESI: cf9d9fb4 EDI: c1372db3 EBP: 00000010 ESP: cf9d9f1c
DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068
Process fxsave-32-excep (pid: 1638, ti=cf9d8000 task=cf9be7e0 task.ti=cf9d8000)
Stack:
00000000 00000301 00000004 00000000 00000000 cf9d3000 cf9da8f0 00000001
<0> 00000004 cf9b6b60 c1019a6b c1019a79 00000020 00000242 000001b6 cf9c5380
<0> cf806b40 cf791880 00000000 00000282 00000282 c108a213 00000020 cf9c5380
Call Trace:
[<c1019a6b>] ? need_resched+0x11/0x1a
[<c1019a79>] ? should_resched+0x5/0x1f
[<c108a213>] ? do_sys_open+0xbd/0xc7
[<c108a213>] ? do_sys_open+0xbd/0xc7
[<c100353b>] ? do_coprocessor_error+0x0/0x11
[<c12d5965>] ? error_code+0x65/0x70
Code: a8 20 74 30 c7 44 24 0c 06 00 03 00 8d 54 24 04 89 d9 b8 08 00 00 00 e8 9b 6d 02 00 eb 16 8b 93 5c 02 00 00 eb 05 e9 04 ff ff ff <9b> dd 32 9b e9 16 ff ff ff 81 c4 84 00 00 00 5b 5e 5f 5d c3 c6
EIP: [<c1003527>] math_error+0x1b4/0x1c8 SS:ESP 0068:cf9d9f1c

This usually continues in slight variations until the system is reset.

This bug was introduced by commit 58a992b9cbaf449aeebd3575c3695a9eb5d95b5e:
x86-32, fpu: Rewrite fpu_save_init()

Signed-off-by: Hans Rosenfeld <hans.rosenfeld@amd.com>
Link: http://lkml.kernel.org/r/1302106003-366952-1-git-send-email-hans.rosenfeld@amd.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
13 years agostaging: usbip: bugfix for isochronous packets and optimization
Arjan Mels [Tue, 5 Apr 2011 18:26:59 +0000 (20:26 +0200)]
staging: usbip: bugfix for isochronous packets and optimization

For isochronous packets the actual_length is the sum of the actual
length of each of the packets, however between the packets might be
padding, so it is not sufficient to just send the first actual_length
bytes of the buffer. To fix this and simultanesouly optimize the
bandwidth the content of the isochronous packets are send without the
padding, the padding is restored on the receiving end.

Signed-off-by: Arjan Mels <arjan.mels@gmx.net>
Cc: Takahiro Hirofuchi <hirofuchi@users.sourceforge.net>
Cc: Max Vozeler <max@vozeler.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agostaging: usbip: bugfix add number of packets for isochronous frames
Arjan Mels [Tue, 5 Apr 2011 18:26:38 +0000 (20:26 +0200)]
staging: usbip: bugfix add number of packets for isochronous frames

The number_of_packets was not transmitted for RET_SUBMIT packets. The
linux client used the stored number_of_packet from the submitted
request. The windows userland client does not do this however and needs
to know the number_of_packets to determine the size of the transmission.

Signed-off-by: Arjan Mels <arjan.mels@gmx.net>
Cc: Takahiro Hirofuchi <hirofuchi@users.sourceforge.net>
Cc: Max Vozeler <max@vozeler.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agostaging: usbip: bugfixes related to kthread conversion
Arjan Mels [Tue, 5 Apr 2011 18:26:11 +0000 (20:26 +0200)]
staging: usbip: bugfixes related to kthread conversion

When doing a usb port reset do a queued reset instead to prevent a
deadlock: the reset will cause the driver to unbind, causing the
usb_driver_lock_for_reset to stall.

Signed-off-by: Arjan Mels <arjan.mels@gmx.net>
Cc: Takahiro Hirofuchi <hirofuchi@users.sourceforge.net>
Cc: Max Vozeler <max@vozeler.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agostaging: usbip: fix shutdown problems.
Arjan Mels [Tue, 5 Apr 2011 18:24:56 +0000 (20:24 +0200)]
staging: usbip: fix shutdown problems.

When shuting down the tcp_rx and tcp_tx threads first check if they are
not closed already (maybe because an error caused them to return).

Signed-off-by: Arjan Mels <arjan.mels@gmx.net>
Cc: Takahiro Hirofuchi <hirofuchi@users.sourceforge.net>
Cc: Max Vozeler <max@vozeler.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agostaging: hv: Fix GARP not sent after Quick Migration
Haiyang Zhang [Wed, 6 Apr 2011 22:18:00 +0000 (15:18 -0700)]
staging: hv: Fix GARP not sent after Quick Migration

After Quick Migration, the network is not immediately operational in the
current context when receiving RNDIS_STATUS_MEDIA_CONNECT event. So, I added
another netif_notify_peers() into a scheduled work, otherwise GARP packet will
not be sent after quick migration, and cause network disconnection.

Thanks to Mike Surcouf <mike@surcouf.co.uk> for reporting the bug and
testing the patch.

Reported-by: Mike Surcouf <mike@surcouf.co.uk>
Tested-by: Mike Surcouf <mike@surcouf.co.uk>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoMAINTAINERS: add entry for Xen network backend
Ian Campbell [Sun, 3 Apr 2011 23:12:23 +0000 (23:12 +0000)]
MAINTAINERS: add entry for Xen network backend

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agobe2net: Fix suspend/resume operation
Padmanabh Ratnakar [Sun, 3 Apr 2011 01:54:39 +0000 (01:54 +0000)]
be2net: Fix suspend/resume operation

eq_next_idx is not getting reset to zero during suspend.
This causes resume to fail. Added the fix.

Signed-off-by: Sarveswara Rao Mygapula <sarveswararao.mygapula@emulex.com>
Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agobe2net: Rename some struct members for clarity
Padmanabh Ratnakar [Sun, 3 Apr 2011 01:54:11 +0000 (01:54 +0000)]
be2net: Rename some struct members for clarity

Renamed msix_vec_idx to eq_idx in be_eq_obj struct.
Renamed msix_vec_next_idx to eq_next_idx in be_adapter structure.
These members are used in INTX mode also.

Signed-off-by: Sarveswara Rao Mygapula <sarveswararao.mygapula@emulex.com>
Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agopppoe: drop PPPOX_ZOMBIEs in pppoe_flush_dev
Ulrich Weber [Wed, 6 Apr 2011 21:04:49 +0000 (14:04 -0700)]
pppoe: drop PPPOX_ZOMBIEs in pppoe_flush_dev

otherwise we loop forever if a PPPoE socket was set
to PPPOX_ZOMBIE state by a PADT message when the
ethernet device is going down afterwards.

Signed-off-by: Ulrich Weber <uweber@astaro.com>
Signed-off-by: David S. Miller <davem@davemloft.net>