firefly-linux-kernel-4.4.55.git
14 years agoext4: Wait for proper transaction commit on fsync
Jan Kara [Wed, 9 Dec 2009 04:51:10 +0000 (23:51 -0500)]
ext4: Wait for proper transaction commit on fsync

We cannot rely on buffer dirty bits during fsync because pdflush can come
before fsync is called and clear dirty bits without forcing a transaction
commit. What we do is that we track which transaction has last changed
the inode and which transaction last changed allocation and force it to
disk on fsync.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: fix incorrect block reservation on quota transfer.
Dmitry Monakhov [Wed, 9 Dec 2009 03:42:28 +0000 (22:42 -0500)]
ext4: fix incorrect block reservation on quota transfer.

Inside ->setattr() call both ATTR_UID and ATTR_GID may be valid
This means that we may end-up with transferring all quotas. Add
we have to reserve QUOTA_DEL_BLOCKS for all quotas, as we do in
case of QUOTA_INIT_BLOCKS.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Reviewed-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: quota macros cleanup
Dmitry Monakhov [Wed, 9 Dec 2009 03:42:15 +0000 (22:42 -0500)]
ext4: quota macros cleanup

Currently all quota block reservation macros contains hard-coded "2"
aka MAXQUOTAS value. This is no good because in some places it is not
obvious to understand what does this digit represent. Let's introduce
new macro with self descriptive name.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Acked-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: ext4_get_reserved_space() must return bytes instead of blocks
Dmitry Monakhov [Wed, 9 Dec 2009 03:41:52 +0000 (22:41 -0500)]
ext4: ext4_get_reserved_space() must return bytes instead of blocks

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Acked-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: remove blocks from inode prealloc list on failure
Curt Wohlgemuth [Wed, 9 Dec 2009 03:18:25 +0000 (22:18 -0500)]
ext4: remove blocks from inode prealloc list on failure

This fixes a leak of blocks in an inode prealloc list if device failures
cause ext4_mb_mark_diskspace_used() to fail.

Signed-off-by: Curt Wohlgemuth <curtw@google.com>
Acked-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: wait for log to commit when umounting
Josef Bacik [Wed, 9 Dec 2009 02:48:58 +0000 (21:48 -0500)]
ext4: wait for log to commit when umounting

There is a potential race when a transaction is committing right when
the file system is being umounting.  This could reduce in a race
because EXT4_SB(sb)->s_group_info could be freed in ext4_put_super
before the commit code calls a callback so the mballoc code can
release freed blocks in the transaction, resulting in a panic trying
to access the freed s_group_info.

The fix is to wait for the transaction to finish committing before we
shutdown the multiblock allocator.

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: Avoid data / filesystem corruption when write fails to copy data
Jan Kara [Wed, 9 Dec 2009 02:24:33 +0000 (21:24 -0500)]
ext4: Avoid data / filesystem corruption when write fails to copy data

When ext4_write_begin fails after allocating some blocks or
generic_perform_write fails to copy data to write, we truncate blocks
already instantiated beyond i_size.  Although these blocks were never
inside i_size, we have to truncate the pagecache of these blocks so
that corresponding buffers get unmapped.  Otherwise subsequent
__block_prepare_write (called because we are retrying the write) will
find the buffers mapped, not call ->get_block, and thus the page will
be backed by already freed blocks leading to filesystem and data
corruption.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: Use ext4 file system driver for ext2/ext3 file system mounts
Theodore Ts'o [Mon, 7 Dec 2009 19:08:51 +0000 (14:08 -0500)]
ext4: Use ext4 file system driver for ext2/ext3 file system mounts

Add a new config option, CONFIG_EXT4_USE_FOR_EXT23 which if enabled,
will cause ext4 to be used for either ext2 or ext3 file system mounts
when ext2 or ext3 is not enabled in the configuration.

This allows minimalist kernel fanatics to drop to file system drivers
from their compiled kernel with out losing functionality.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: Return the PTR_ERR of the correct pointer in setup_new_group_blocks()
Roel Kluin [Mon, 7 Dec 2009 15:38:16 +0000 (10:38 -0500)]
ext4: Return the PTR_ERR of the correct pointer in setup_new_group_blocks()

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agojbd2: Add ENOMEM checking in and for jbd2_journal_write_metadata_buffer()
Theodore Ts'o [Tue, 1 Dec 2009 14:04:42 +0000 (09:04 -0500)]
jbd2: Add ENOMEM checking in and for jbd2_journal_write_metadata_buffer()

OOM happens.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: remove unused parameter wbc from __ext4_journalled_writepage()
Wu Fengguang [Tue, 24 Nov 2009 16:15:44 +0000 (11:15 -0500)]
ext4: remove unused parameter wbc from __ext4_journalled_writepage()

CC: Jan Kara <jack@suse.cz>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: remove encountered_congestion trace
Wu Fengguang [Tue, 24 Nov 2009 16:15:08 +0000 (11:15 -0500)]
ext4: remove encountered_congestion trace

It is no longer set and scheduled to be removed.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: move_extent_per_page() cleanup
Akira Fujita [Tue, 24 Nov 2009 15:31:56 +0000 (10:31 -0500)]
ext4: move_extent_per_page() cleanup

Integrate duplicate lines (acquire/release semaphore and invalidate
extent cache in move_extent_per_page()) into mext_replace_branches(),
to reduce source and object code size.

Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: initialize moved_len before calling ext4_move_extents()
Kazuya Mio [Tue, 24 Nov 2009 15:28:48 +0000 (10:28 -0500)]
ext4: initialize moved_len before calling ext4_move_extents()

The move_extent.moved_len is used to pass back the number of exchanged
blocks count to user space.  Currently the caller must clear this
field; but we spend more code space checking for this requirement than
simply zeroing the field ourselves, so let's just make life easier for
everyone all around.

Signed-off-by: Kazuya Mio <k-mio@sx.jp.nec.com>
Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: Fix double-free of blocks with EXT4_IOC_MOVE_EXT
Akira Fujita [Tue, 24 Nov 2009 15:19:57 +0000 (10:19 -0500)]
ext4: Fix double-free of blocks with EXT4_IOC_MOVE_EXT

At the beginning of ext4_move_extent(), we call
ext4_discard_preallocations() to discard inode PAs of orig and donor
inodes.  But in the following case, blocks can be double freed, so
move ext4_discard_preallocations() to the end of ext4_move_extents().

1. Discard inode PAs of orig and donor inodes with
   ext4_discard_preallocations() in ext4_move_extents().

   orig : [ DATA1 ]
   donor: [ DATA2 ]

2. While data blocks are exchanging between orig and donor inodes, new
   inode PAs is created to orig by other process's block allocation.
   (Since there are semaphore gaps in ext4_move_extents().)  And new
   inode PAs is used partially (2-1).

   2-1 Create new inode PAs to orig inode
   orig : [ DATA1 | used PA1 | free PA1 ]
   donor: [ DATA2 ]

3. Donor inode which has old orig inode's blocks is deleted after
   EXT4_IOC_MOVE_EXT finished (3-1, 3-2).  So the block bitmap
   corresponds to old orig inode's blocks are freed.

   3-1 After EXT4_IOC_MOVE_EXT finished
   orig : [ DATA2 |  free PA1 ]
   donor: [ DATA1 |  used PA1 ]

   3-2 Delete donor inode
   orig : [ DATA2 |  free PA1 ]
   donor: [ FREE SPACE(DATA1) | FREE SPACE(used PA1) ]

4. The double-free of blocks is occurred, when close() is called to
   orig inode.  Because ext4_discard_preallocations() for orig inode
   frees used PA1 and free PA1, though used PA1 is already freed in 3.

   4-1 Double-free of blocks is occurred
   orig : [ DATA2 |  FREE SPACE(free PA1) ]
   donor: [ FREE SPACE(DATA1) | DOUBLE FREE(used PA1) ]

Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: use ext4_data_block_valid() in ext4_free_blocks()
Theodore Ts'o [Mon, 23 Nov 2009 01:48:42 +0000 (20:48 -0500)]
ext4: use ext4_data_block_valid() in ext4_free_blocks()

The block validity framework does a more comprehensive set of checks,
and it saves object code space to use the ext4_data_block_valid() than
the limited open-coded version that had been in ext4_free_blocks().

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: add check for wraparound in ext4_data_block_valid()
Theodore Ts'o [Mon, 23 Nov 2009 01:48:34 +0000 (20:48 -0500)]
ext4: add check for wraparound in ext4_data_block_valid()

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: print i_mode in octal in ext4 tracepoints
Theodore Ts'o [Mon, 23 Nov 2009 01:23:31 +0000 (20:23 -0500)]
ext4: print i_mode in octal in ext4 tracepoints

Inode permissions are much easier to understand if they are printed in
octal.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: call ext4_forget() from ext4_free_blocks()
Theodore Ts'o [Mon, 23 Nov 2009 12:17:05 +0000 (07:17 -0500)]
ext4: call ext4_forget() from ext4_free_blocks()

Add the facility for ext4_forget() to be called from
ext4_free_blocks().  This simplifies the code in a large number of
places, and centralizes most of the work of calling ext4_forget() into
a single place.

Also fix a bug in the extents migration code; it wasn't calling
ext4_forget() when releasing the indirect blocks during the
conversion.  As a result, if the system cashed during or shortly after
the extents migration, and the released indirect blocks get reused as
data blocks, the journal replay would corrupt the data blocks.  With
this new patch, fixing this bug was as simple as adding the
EXT4_FREE_BLOCKS_FORGET flags to the call to ext4_free_blocks().

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
15 years agoext4: fold ext4_free_blocks() and ext4_mb_free_blocks()
Theodore Ts'o [Sun, 22 Nov 2009 12:44:56 +0000 (07:44 -0500)]
ext4: fold ext4_free_blocks() and ext4_mb_free_blocks()

ext4_mb_free_blocks() is only called by ext4_free_blocks(), and the
latter function doesn't really do much.  So merge the two functions
together, such that ext4_free_blocks() is now found in
fs/ext4/mballoc.c.  This saves about 200 bytes of compiled text space.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: fold ext4_journal_forget() into ext4_forget()
Theodore Ts'o [Mon, 23 Nov 2009 02:00:13 +0000 (21:00 -0500)]
ext4: fold ext4_journal_forget() into ext4_forget()

Convert the last two callers of ext4_journal_forget() to use
ext4_forget() instead, and then fold ext4_journal_forget() into
ext4_forget().  This reduces are code complexity and shortens our call
stack.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: fold ext4_journal_revoke() into ext4_forget()
Theodore Ts'o [Tue, 24 Nov 2009 16:05:59 +0000 (11:05 -0500)]
ext4: fold ext4_journal_revoke() into ext4_forget()

The only caller of ext4_journal_revoke() is ext4_forget(), so we can
fold ext4_journal_revoke() into ext4_forget() to simplify the code and
shorten the call stack.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: move ext4_forget() to ext4_jbd2.c
Theodore Ts'o [Mon, 23 Nov 2009 01:52:12 +0000 (20:52 -0500)]
ext4: move ext4_forget() to ext4_jbd2.c

The ext4_forget() function better belongs in ext4_jbd2.c.  This will
allow us to do some cleanup of the ext4_journal_revoke() and
ext4_journal_forget() functions, as well as giving us better error
reporting since we can report the caller of ext4_forget() when things
go wrong.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
15 years agoext4: make "norecovery" an alias for "noload"
Eric Sandeen [Thu, 19 Nov 2009 19:28:50 +0000 (14:28 -0500)]
ext4: make "norecovery" an alias for "noload"

Users on the linux-ext4 list recently complained about differences
across filesystems w.r.t. how to mount without a journal replay.

In the discussion it was noted that xfs's "norecovery" option is
perhaps more descriptively accurate than "noload," so let's make
that an alias for ext4.

Also show this status in /proc/mounts

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
15 years agoext4: make trim/discard optional (and off by default)
Eric Sandeen [Thu, 19 Nov 2009 19:25:42 +0000 (14:25 -0500)]
ext4: make trim/discard optional (and off by default)

It is anticipated that when sb_issue_discard starts doing
real work on trim-capable devices, we may see issues.  Make
this mount-time optional, and default it to off until we know
that things are working out OK.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: fix error handling in ext4_ind_get_blocks()
Jan Kara [Mon, 23 Nov 2009 12:24:48 +0000 (07:24 -0500)]
ext4: fix error handling in ext4_ind_get_blocks()

When an error happened in ext4_splice_branch we failed to notice that
in ext4_ind_get_blocks and mapped the buffer anyway. Fix the problem
by checking for error properly.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
14 years agoext4: avoid issuing unnecessary barriers
Theodore Ts'o [Mon, 23 Nov 2009 12:24:57 +0000 (07:24 -0500)]
ext4: avoid issuing unnecessary barriers

We don't to issue an I/O barrier on an error or if we force commit
because we are doing data journaling.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Jan Kara <jack@suse.cz>
Cc: stable@kernel.org
15 years agoext4: fix block validity checks so they work correctly with meta_bg
Theodore Ts'o [Sun, 15 Nov 2009 20:29:56 +0000 (15:29 -0500)]
ext4: fix block validity checks so they work correctly with meta_bg

The block validity checks used by ext4_data_block_valid() wasn't
correctly written to check file systems with the meta_bg feature.  Fix
this.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
14 years agoext4: fix uninit block bitmap initialization when s_meta_first_bg is non-zero
Theodore Ts'o [Mon, 23 Nov 2009 12:24:38 +0000 (07:24 -0500)]
ext4: fix uninit block bitmap initialization when s_meta_first_bg is non-zero

The number of old-style block group descriptor blocks is
s_meta_first_bg when the meta_bg feature flag is set.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
14 years agoext4: don't update the superblock in ext4_statfs()
Theodore Ts'o [Mon, 23 Nov 2009 12:24:52 +0000 (07:24 -0500)]
ext4: don't update the superblock in ext4_statfs()

commit a71ce8c6c9bf269b192f352ea555217815cf027e updated ext4_statfs()
to update the on-disk superblock counters, but modified this buffer
directly without any journaling of the change.  This is one of the
accesses that was causing the crc errors in journal replay as seen in
kernel.org bugzilla #14354.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
15 years agoext4: journal all modifications in ext4_xattr_set_handle
Eric Sandeen [Sun, 15 Nov 2009 20:30:52 +0000 (15:30 -0500)]
ext4: journal all modifications in ext4_xattr_set_handle

ext4_xattr_set_handle() was zeroing out an inode outside
of journaling constraints; this is one of the accesses that
was causing the crc errors in journal replay as seen in
kernel.org bugzilla #14354.

Reviewed-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
15 years agoext4: fix i_flags access in ext4_da_writepages_trans_blocks()
Julia Lawall [Sun, 15 Nov 2009 20:30:58 +0000 (15:30 -0500)]
ext4: fix i_flags access in ext4_da_writepages_trans_blocks()

We need to be testing the i_flags field in the ext4 specific portion
of the inode, instead of the (confusingly aliased) i_flags field in
the generic struct inode.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
14 years agoext4: make sure directory and symlink blocks are revoked
Theodore Ts'o [Mon, 23 Nov 2009 12:17:34 +0000 (07:17 -0500)]
ext4: make sure directory and symlink blocks are revoked

When an inode gets unlinked, the functions ext4_clear_blocks() and
ext4_remove_blocks() call ext4_forget() for all the buffer heads
corresponding to the deleted inode's data blocks.  If the inode is a
directory or a symlink, the is_metadata parameter must be non-zero so
ext4_forget() will revoke them via jbd2_journal_revoke().  Otherwise,
if these blocks are reused for a data file, and the system crashes
before a journal checkpoint, the journal replay could end up
corrupting these data blocks.

Thanks to Curt Wohlgemuth for pointing out potential problems in this
area.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
14 years agoext4: add tracepoint for ext4_forget()
Theodore Ts'o [Mon, 23 Nov 2009 12:25:08 +0000 (07:25 -0500)]
ext4: add tracepoint for ext4_forget()

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: remove failed journal checksum check
Theodore Ts'o [Mon, 23 Nov 2009 02:00:01 +0000 (21:00 -0500)]
ext4: remove failed journal checksum check

Now that we are checking for failed journal checksums in the jbd2
layer, we don't need to check in the ext4 mount path --- since a
checksum fail will result in ext4_load_journal() returning an error,
causing the file system to refuse to be mounted until e2fsck can deal
with the problem.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
15 years agojbd2: don't wipe the journal on a failed journal checksum
Theodore Ts'o [Sun, 15 Nov 2009 20:31:37 +0000 (15:31 -0500)]
jbd2: don't wipe the journal on a failed journal checksum

If there is a failed journal checksum, don't reset the journal.  This
allows for userspace programs to decide how to recover from this
situation.  It may be that ignoring the journal checksum failure might
be a better way of recovering the file system.  Once we add per-block
checksums, we can definitely do better.  Until then, a system
administrator can try backing up the file system image (or taking a
snapshot) and and trying to determine experimentally whether ignoring
the checksum failure or aborting the journal replay results in less
data loss.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
15 years agoext4: plug a buffer_head leak in an error path of ext4_iget()
Theodore Ts'o [Sat, 14 Nov 2009 13:19:05 +0000 (08:19 -0500)]
ext4: plug a buffer_head leak in an error path of ext4_iget()

One of the invalid error paths in ext4_iget() forgot to brelse() the
inode buffer head.  Fix it by adding a brelse() in the common error
return path, which also simplifies function.

Thanks to Andi Kleen <ak@linux.intel.com> reporting the problem.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: fix spelling typos in move_extent.c
Akira Fujita [Mon, 23 Nov 2009 12:24:50 +0000 (07:24 -0500)]
ext4: fix spelling typos in move_extent.c

Fix a few spelling typos in move_extent.c

Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.co.jp>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: fix possible recursive locking warning in EXT4_IOC_MOVE_EXT
Akira Fujita [Mon, 23 Nov 2009 12:24:41 +0000 (07:24 -0500)]
ext4: fix possible recursive locking warning in EXT4_IOC_MOVE_EXT

If CONFIG_PROVE_LOCKING is enabled, the double_down_write_data_sem()
will trigger a false-positive warning of a recursive lock.  Since we
take i_data_sem for the two inodes ordered by their inode numbers,
this isn't a problem.  Use of down_write_nested() will notify the lock
dependency checker machinery that there is no problem here.

This problem was reported by Brian Rogers:

http://marc.info/?l=linux-ext4&m=125115356928011&w=1

Reported-by: Brian Rogers <brian@xyzw.org>
Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: fix lock order problem in ext4_move_extents()
Akira Fujita [Mon, 23 Nov 2009 12:24:43 +0000 (07:24 -0500)]
ext4: fix lock order problem in ext4_move_extents()

ext4_move_extents() checks the logical block contiguousness
of original file with ext4_find_extent() and mext_next_extent().
Therefore the extent which ext4_ext_path structure indicates
must not be changed between above functions.

But in current implementation, there is no i_data_sem protection
between ext4_ext_find_extent() and mext_next_extent().  So the extent
which ext4_ext_path structure indicates may be overwritten by
delalloc.  As a result, ext4_move_extents() will exchange wrong blocks
between original and donor files.  I change the place where
acquire/release i_data_sem to solve this problem.

Moreover, I changed move_extent_per_page() to start transaction first,
and then acquire i_data_sem.  Without this change, there is a
possibility of the deadlock between mmap() and ext4_move_extents():

* NOTE: "A", "B" and "C" mean different processes

A-1: ext4_ext_move_extents() acquires i_data_sem of two inodes.

B:   do_page_fault() starts the transaction (T),
     and then tries to acquire i_data_sem.
     But process "A" is already holding it, so it is kept waiting.

C:   While "A" and "B" running, kjournald2 tries to commit transaction (T)
     but it is under updating, so kjournald2 waits for it.

A-2: Call ext4_journal_start with holding i_data_sem,
     but transaction (T) is locked.

Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: fix the returned block count if EXT4_IOC_MOVE_EXT fails
Akira Fujita [Mon, 23 Nov 2009 12:25:48 +0000 (07:25 -0500)]
ext4: fix the returned block count if EXT4_IOC_MOVE_EXT fails

If the EXT4_IOC_MOVE_EXT ioctl fails, the number of blocks that were
exchanged before the failure should be returned to the userspace
caller.  Unfortunately, currently if the block size is not the same as
the page size, the returned block count that is returned is the
page-aligned block count instead of the actual block count.  This
commit addresses this bug.

Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoext4: avoid divide by zero when trying to mount a corrupted file system
Theodore Ts'o [Mon, 23 Nov 2009 12:24:46 +0000 (07:24 -0500)]
ext4: avoid divide by zero when trying to mount a corrupted file system

If s_log_groups_per_flex is greater than 31, then groups_per_flex will
will overflow and cause a divide by zero error.  This can cause kernel
BUG if such a file system is mounted.

Thanks to Nageswara R Sastry for analyzing the failure and providing
an initial patch.

http://bugzilla.kernel.org/show_bug.cgi?id=14287

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
14 years agoext4: fix potential buffer head leak when add_dirent_to_buf() returns ENOSPC
Theodore Ts'o [Mon, 23 Nov 2009 12:25:49 +0000 (07:25 -0500)]
ext4: fix potential buffer head leak when add_dirent_to_buf() returns ENOSPC

Previously add_dirent_to_buf() did not free its passed-in buffer head
in the case of ENOSPC, since in some cases the caller still needed it.
However, this led to potential buffer head leaks since not all callers
dealt with this correctly.  Fix this by making simplifying the freeing
convention; now add_dirent_to_buf() *never* frees the passed-in buffer
head, and leaves that to the responsibility of its caller.  This makes
things cleaner and easier to prove that the code is neither leaking
buffer heads or calling brelse() one time too many.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Curt Wohlgemuth <curtw@google.com>
Cc: stable@kernel.org
15 years agoLinux 2.6.32-rc7
Linus Torvalds [Fri, 13 Nov 2009 00:46:07 +0000 (16:46 -0800)]
Linux 2.6.32-rc7

15 years agoMerge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 12 Nov 2009 22:57:15 +0000 (14:57 -0800)]
Merge branch 'omap-fixes-for-linus' of git://git./linux/kernel/git/tmlind/linux-omap-2.6

* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  omap3: Decrease cpufreq transition latency
  omap3: update Pandora defconfig
  omap3: 3430sdp: Enable Linux Regulator framework
  omap3: beagle: Fix USB host port power control
  omap3: pandora: Fix keypad keymap
  omap1: Amstrad Delta defconfig fixes
  omap: Fix omapfb/lcdc on OMAP1510 broken when PM set
  omap: Use resource_size
  omap: Fix race condition in omap dma driver

15 years ago__generic_block_fiemap(): fix for files bigger than 4GB
Mike Hommey [Wed, 11 Nov 2009 22:26:55 +0000 (14:26 -0800)]
__generic_block_fiemap(): fix for files bigger than 4GB

Because of an integer overflow on start_blk, various kind of wrong results
would be returned by the generic_block_fiemap() handler, such as no
extents when there is a 4GB+ hole at the beginning of the file, or wrong
fe_logical when an extent starts after the first 4GB.

Signed-off-by: Mike Hommey <mh@glandium.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Eric Sandeen <sandeen@sgi.com>
Cc: Josef Bacik <jbacik@redhat.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agopps: events reporting fix up
Rodolfo Giometti [Wed, 11 Nov 2009 22:26:54 +0000 (14:26 -0800)]
pps: events reporting fix up

PPS events must be recorded according to PPS's mode settings.

If a process asks for (i.e.) capture-assert events only, when the PPS
client calls the pps_event() function to save the current PPS event, we
should verify the event type and then discard unwanted ones.

Also, without this patch userland processes waiting for a specific PPS
event (assert or clear but not both) may be awakened at wrong time.

Signed-off-by: Rodolfo Giometti <giometti@linux.it>
Tested-by: William S. Brasher <billb958@door.net>
Tested-by: Reg Clemens <clemens@dwf.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agopps: locking scheme fix up for PPS_GETPARAMS
Rodolfo Giometti [Wed, 11 Nov 2009 22:26:52 +0000 (14:26 -0800)]
pps: locking scheme fix up for PPS_GETPARAMS

Userland programs may read/write PPS parameters at same time and these
operations may corrupt PPS data.

Signed-off-by: Rodolfo Giometti <giometti@linux.it>
Tested-by: Reg Clemens <clemens@dwf.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agodrivers/video/msm: update to new kernel
Pavel Machek [Wed, 11 Nov 2009 22:26:51 +0000 (14:26 -0800)]
drivers/video/msm: update to new kernel

TASK_INTERRUPTIBLE and friends are now only available after including
<linux/sched.h>, so include it when needed.

bus_id is no longer available/necessary, so remove that.

Android pmem driver is not available in mainline, so remove its hooks
from drivers/video.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agogpiolib: fix device_create() result check
Sergei Shtylyov [Wed, 11 Nov 2009 22:26:50 +0000 (14:26 -0800)]
gpiolib: fix device_create() result check

In case of failure, device_create() returns not NULL but the error code.
The current code checks for non-NULL though which causes kernel oops in
sysfs_create_group() when device_create() fails.  Check for error using
IS_ERR() and propagate the error value using PTR_ERR() instead of fixed
-ENODEV code returned now...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agortc: v3020: fix v3020_mmio_read_bit()
Scott Valentine [Wed, 11 Nov 2009 22:26:49 +0000 (14:26 -0800)]
rtc: v3020: fix v3020_mmio_read_bit()

v3020_mmio_read_bit() always returns 0 when left_shift > 7.

v3020_mmio_read_bit()'s return type is (unsigned char).  The code returns
a value masked by (1 << left_shift) that is casted to the return type.  If
left_shift is larger than 7, the cast will always result in a 0 return
value.  The problem was discovered with left_shift = 16, and the included
patch corrects the problem.

The bug was introduced in the last (Apr 3 2009) commit of the file, kernel
versions 2.6.30 and later.

Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Paul Gortmaker <p_gortmaker@yahoo.com>
Cc: Raphael Assenat <raph@8d.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agortc-vr41xx: fix do_div() warning
Yoichi Yuasa [Wed, 11 Nov 2009 22:26:48 +0000 (14:26 -0800)]
rtc-vr41xx: fix do_div() warning

drivers/rtc/rtc-vr41xx.c: In function 'vr41xx_rtc_irq_set_freq':
drivers/rtc/rtc-vr41xx.c:217: warning: comparison of distinct pointer types lacks a cast
drivers/rtc/rtc-vr41xx.c:217: warning: right shift count >= width of type
drivers/rtc/rtc-vr41xx.c:217: warning: passing argument 1 of '__div64_32' from incompatible pointer type
include/asm-generic/div64.h:35: note: expected 'uint64_t *' but argument is of type 'long unsigned int *'

Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Paul Gortmaker <p_gortmaker@yahoo.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoexec: setup_arg_pages() fails to return errors
Anton Blanchard [Wed, 11 Nov 2009 22:26:48 +0000 (14:26 -0800)]
exec: setup_arg_pages() fails to return errors

In setup_arg_pages we work hard to assign a value to ret, but on exit we
always return 0.

Also remove a now duplicated exit path and branch to out_unlock instead.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agofb: put framebuffer drivers back under the "frame buffer devices" menu
Guennadi Liakhovetski [Wed, 11 Nov 2009 22:26:47 +0000 (14:26 -0800)]
fb: put framebuffer drivers back under the "frame buffer devices" menu

The config FB_PRE_INIT_FB entry in drivers/video/Kconfig pushes all entries
below it out of the menuconfig selection. Fix this.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: correct SECURITY SUBSYSTEM git entry
Joe Perches [Wed, 11 Nov 2009 22:26:46 +0000 (14:26 -0800)]
MAINTAINERS: correct SECURITY SUBSYSTEM git entry

Use git.kernel.org not www.kernel.org

Signed-off-by: Joe Perches <joe@perches.com>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: correct NETFILTER git entry format
Joe Perches [Wed, 11 Nov 2009 22:26:45 +0000 (14:26 -0800)]
MAINTAINERS: correct NETFILTER git entry format

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: correct 9P FILE SYSTEM git entry
Joe Perches [Wed, 11 Nov 2009 22:26:44 +0000 (14:26 -0800)]
MAINTAINERS: correct 9P FILE SYSTEM git entry

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agommci-omap: free irq resource
Ladislav Michl [Wed, 11 Nov 2009 22:26:43 +0000 (14:26 -0800)]
mmci-omap: free irq resource

Free IRQ on remove.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoserial: add support for the Lava Quattro PCI quad-port 16550A card
Lennert Buytenhek [Wed, 11 Nov 2009 22:26:42 +0000 (14:26 -0800)]
serial: add support for the Lava Quattro PCI quad-port 16550A card

This seems to be a different model (with a different PCI ID) than the
"Quatro" card that is also in the list.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoserial: fix printk format specifiers for struct uart_port::iobase
Lennert Buytenhek [Wed, 11 Nov 2009 22:26:41 +0000 (14:26 -0800)]
serial: fix printk format specifiers for struct uart_port::iobase

struct uart_port::iobase is unsigned long, so use %lx as printk format
specifier.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agortc: pcf50633: consider alrm->enable in pcf50633_rtc_set_alarm
Werner Almesberger [Wed, 11 Nov 2009 22:26:40 +0000 (14:26 -0800)]
rtc: pcf50633: consider alrm->enable in pcf50633_rtc_set_alarm

According to Documentation/rtc.txt, RTC_WKALM_SET sets the alarm time and
enables/disables the alarm.  We implement RTC_WKALM_SET through
pcf50633_rtc_set_alarm.  The enabling/disabling part was missing.

Signed-off-by: Werner Almesberger <werner@openmoko.org>
Reported-by: Michael 'Mickey' Lauer <mickey@openmoko.org>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Cc: Paul Gortmaker <p_gortmaker@yahoo.com>
Cc: Balaji Rao <balajirrao@openmoko.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agortc: pcf50633: fix month off-by-one error
Rask Ingemann Lambertsen [Wed, 11 Nov 2009 22:26:36 +0000 (14:26 -0800)]
rtc: pcf50633: fix month off-by-one error

The PCF50633 stores a month value of 1-12, but the kernel wants 0-11.

Signed-off-by: Rask Ingemann Lambertsen <rask@sygehus.dk>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Cc: Paul Gortmaker <p_gortmaker@yahoo.com>
Cc: Balaji Rao <balajirrao@openmoko.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoatmel_lcdfb: new alternate pixel clock formula
Nicolas Ferre [Wed, 11 Nov 2009 22:26:35 +0000 (14:26 -0800)]
atmel_lcdfb: new alternate pixel clock formula

at91sam9g45 non ES lots have an alternate pixel clock calculation formula.
Introduce this one with condition on the cpu_is_xxxxx() macros.

Newer 9g45 SOC will not have good pixel clock calculation without this
fix.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agofs: add missing compat_ptr handling for FS_IOC_RESVSP ioctl
Heiko Carstens [Wed, 11 Nov 2009 22:26:34 +0000 (14:26 -0800)]
fs: add missing compat_ptr handling for FS_IOC_RESVSP ioctl

For FS_IOC_RESVSP and FS_IOC_RESVSP64 compat_sys_ioctl() uses its
arg argument as a pointer to userspace. However it is missing a
a call to compat_ptr() which will do a proper pointer conversion.

This was introduced with 3e63cbb1 "fs: Add new pre-allocation ioctls
to vfs for compatibility with legacy xfs ioctls".

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ankit Jain <me@ankitjain.org>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Arnd Bergmann <arndbergmann@googlemail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: <stable@kernel.org> [2.6.31.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agopidns: fix a leak in /proc dentries and inodes with pid namespaces.
Sukadev Bhattiprolu [Wed, 11 Nov 2009 22:26:32 +0000 (14:26 -0800)]
pidns: fix a leak in /proc dentries and inodes with pid namespaces.

Daniel Lezcano reported a leak in 'struct pid' and 'struct pid_namespace'
that is discussed in:

http://lkml.org/lkml/2009/10/2/159.

To summarize the thread, when container-init is terminated, it sets the
PF_EXITING flag, zaps other processes in the container and waits to reap
them.  As a part of reaping, the container-init should flush any /proc
dentries associated with the processes.  But because the container-init is
itself exiting and the following PF_EXITING check, the dentries are not
flushed, resulting in leak in /proc inodes and dentries.

This fix reverts the commit 7766755a2f249e7e0 ("Fix /proc dcache deadlock
in do_exit") which introduced the check for PF_EXITING.  At the time of
the commit, shrink_dcache_parent() flushed dentries from other filesystems
also and could have caused a deadlock which the commit fixed.  But as
pointed out by Eric Biederman, after commit 0feae5c47aabdde59,
shrink_dcache_parent() no longer affects other filesystems.  So reverting
the commit is now safe.

As pointed out by Jan Kara, the leak is not as critical since the
unclaimed space will be reclaimed under memory pressure or by:

echo 3 > /proc/sys/vm/drop_caches

But since this check is no longer required, its best to remove it.

Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Reported-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Jan Kara <jack@ucw.cz>
Cc: Andrea Arcangeli <andrea@cpushare.com>
Cc: Serge Hallyn <serue@us.ibm.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoalpha: move THREAD_SIZE definition outside #ifndef ASSEMBLY
Andrew Morton [Wed, 11 Nov 2009 22:26:30 +0000 (14:26 -0800)]
alpha: move THREAD_SIZE definition outside #ifndef ASSEMBLY

arch/alpha/kernel/vmlinux.lds.S uses it:

arch/alpha/kernel/vmlinux.lds:241: undefined symbol `THREAD_SIZE' referenced in expression

Seems to have been caused by

commit 9d93f00580243cc059510d9d6ac4d2f5e97e5b83
Author:     Geoffrey Thomas <geofft@ksplice.com>
AuthorDate: Thu Sep 24 10:36:26 2009 -0400
Commit:     Linus Torvalds <torvalds@linux-foundation.org>
CommitDate: Thu Sep 24 17:16:22 2009 -0700

    alpha: Clean up linker script using new linker script macros.

    Note that .data.page_aligned and .data.cacheline_aligned are now after
    _data; it was probably a bug that they were before it.

    Also, some explicit ALIGN(8)'s between various initcall sections were
    removed; this should be harmless as the implicit alignment of
    initcall_t was already 8.

Cc: Geoffrey Thomas <geofft@ksplice.com>
Cc: Tim Abbott <tabbott@ksplice.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoalpha: fix F_SETOWN_EX and F_GETLK64 conflict
Peter Zijlstra [Wed, 11 Nov 2009 22:26:27 +0000 (14:26 -0800)]
alpha: fix F_SETOWN_EX and F_GETLK64 conflict

Fix a bug in

    commit ba0a6c9f6fceed11c6a99e8326f0477fe383e6b5
    Author:     Peter Zijlstra <a.p.zijlstra@chello.nl>
    AuthorDate: Wed Sep 23 15:57:03 2009 -0700
    Commit:     Linus Torvalds <torvalds@linux-foundation.org>
    CommitDate: Thu Sep 24 07:21:01 2009 -0700

        fcntl: add F_[SG]ETOWN_EX

In asm-generic/fcntl.h, F_SETOWN_EX and F_GETLK64 both have value 12, and
F_GETOWN_EX and F_SETLK64 both have value 13.

Reported-by: "Joseph S. Myers" <joseph@codesourcery.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Andreas Schwab <schwab@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agomemcg: fix wrong pointer initialization at page migration when memcg is disabled.
KAMEZAWA Hiroyuki [Wed, 11 Nov 2009 22:26:26 +0000 (14:26 -0800)]
memcg: fix wrong pointer initialization at page migration when memcg is disabled.

Lee Schermerhorn reported that he saw bad pointer dereference in
mem_cgroup_end_migration() when he disabled memcg by boot option.

memcg's page migration logic works as

mem_cgroup_prepare_migration(page, &ptr);
do page migration
mem_cgroup_end_migration(page, ptr);

Now, ptr is not initialized in prepare_migration when memcg is disabled
by boot option. This causes panic in end_migration. This patch fixes it.

Reported-by: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agosavagefb: fix blanking mode on CRT display
Krzysztof Helt [Wed, 11 Nov 2009 22:26:25 +0000 (14:26 -0800)]
savagefb: fix blanking mode on CRT display

Fix wrong bit mask for blanking register.  Due to the error a CRT monitor
blanks off due to wrong frequency (out of range) instead of PM signal
(vertical and horizontal frequencies cut off).

Just compare the mask with bits set in the switch(blank) clause below the
changed line.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agofb: remove fb_save_state() and fb_restore_state operations
Krzysztof Helt [Wed, 11 Nov 2009 22:26:22 +0000 (14:26 -0800)]
fb: remove fb_save_state() and fb_restore_state operations

Remove fb_save_state() and fb_restore_state operations from frame buffer layer.
They are used only in two drivers:
1. savagefb  - and cause bug #11248
2. uvesafb

Usage of these operations is misunderstood in both drivers so kill these
operations, fix the bug #11248 and avoid confusion in the future.

Tested on Savage 3D/MV card and the patch fixes the bug #11248.

The frame buffer layer uses these funtions during switch between graphics
and text mode of the console, but these drivers saves state before
switching of the frame buffer (in the fb_open) and after releasing it (in
the fb_release).  This defeats the purpose of these operations.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=11248

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Reported-by: Jochen Hein <jochen@jochen.org>
Tested-by: Jochen Hein <jochen@jochen.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michal Januszewski <spock@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agopage allocator: Do not allow interrupts to use ALLOC_HARDER
Mel Gorman [Wed, 11 Nov 2009 22:26:17 +0000 (14:26 -0800)]
page allocator: Do not allow interrupts to use ALLOC_HARDER

Commit 341ce06f69abfafa31b9468410a13dbd60e2b237 ("page allocator:
calculate the alloc_flags for allocation only once") altered watermark
logic slightly by allowing rt_tasks that are handling an interrupt to set
ALLOC_HARDER.  This patch brings the watermark logic more in line with
2.6.30.

This change results in a reduction of the number high-order GFP_ATOMIC
allocation failures reported.  See
http://www.gossamer-threads.com/lists/linux/kernel/1144153

[rientjes@google.com: Spotted the problem]
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Reviewed-by: Rik van Riel <riel@redhat.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agopage allocator: always wake kswapd when restarting an allocation attempt after direct...
Mel Gorman [Wed, 11 Nov 2009 22:26:14 +0000 (14:26 -0800)]
page allocator: always wake kswapd when restarting an allocation attempt after direct reclaim failed

If a direct reclaim makes no forward progress, it considers whether it
should go OOM or not.  Whether OOM is triggered or not, it may retry the
allocation afterwards.  In times past, this would always wake kswapd as
well but currently, kswapd is not woken up after direct reclaim fails.
For order-0 allocations, this makes little difference but if there is a
heavy mix of higher-order allocations that direct reclaim is failing for,
it might mean that kswapd is not rewoken for higher orders as much as it
did previously.

This patch wakes up kswapd when an allocation is being retried after a
direct reclaim failure.  It would be expected that kswapd is already
awake, but this has the effect of telling kswapd to reclaim at the higher
order as well.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: openipmi list is moderated
Randy Dunlap [Wed, 11 Nov 2009 22:26:13 +0000 (14:26 -0800)]
MAINTAINERS: openipmi list is moderated

openipmi list is moderated.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoget_maintainer: fix usage comment
Roel Kluin [Wed, 11 Nov 2009 22:26:13 +0000 (14:26 -0800)]
get_maintainer: fix usage comment

With the `s' it just won't work.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: VMWARE VMXNET3 - Quote name with comma and period, use tabs
Joe Perches [Wed, 11 Nov 2009 22:26:12 +0000 (14:26 -0800)]
MAINTAINERS: VMWARE VMXNET3 - Quote name with comma and period, use tabs

Names with periods or commas need to be quoted
Use tab not spaces

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Shreyas Bhatewara <sbhatewara@vmware.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: SERVER ENGINES 10Gbps iSCSI - Use single line M:
Joe Perches [Wed, 11 Nov 2009 22:26:11 +0000 (14:26 -0800)]
MAINTAINERS: SERVER ENGINES 10Gbps iSCSI - Use single line M:

Integrate P:/M: lines to single M:
Use tabs not spaces

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: BROCADE BFA - Use single line M: and tabs
Joe Perches [Wed, 11 Nov 2009 22:26:10 +0000 (14:26 -0800)]
MAINTAINERS: BROCADE BFA - Use single line M: and tabs

Integrate P:/M: to single M:
Use tab for spacing

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Jing Huang <huangj@brocade.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: ASUS ACPI EXTRAS - remove F:arch/x86/kernel/acpi/boot.c
Joe Perches [Wed, 11 Nov 2009 22:26:09 +0000 (14:26 -0800)]
MAINTAINERS: ASUS ACPI EXTRAS - remove F:arch/x86/kernel/acpi/boot.c

Oops.  How did that get there?
(Don't look, it's my original pattern commit...)

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>
15 years agofs/jbd: Export log_start_commit to fix ext3 build.
Stefan Schmidt [Thu, 12 Nov 2009 08:53:50 +0000 (09:53 +0100)]
fs/jbd: Export log_start_commit to fix ext3 build.

This fixes:
ERROR: "log_start_commit" [fs/ext3/ext3.ko] undefined!

Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
15 years agoomap3: Decrease cpufreq transition latency
Mike Turquette [Wed, 11 Nov 2009 19:00:38 +0000 (11:00 -0800)]
omap3: Decrease cpufreq transition latency

Adjust OMAP3 frequency transition latency from 10,000,000uS to a more
reasonable 300,000uS.  This causes ondemand and conservative governors to
sample CPU load more often resulting in more responsive behavior.

Tested on Android 2.6.29; using this value and conservative governor, CORE
power consumption on Zoom2 was comparable to the old and unresponsive
10,000,000uS value while UI responsiveness was greatly improved.

Signed-off-by: Mike Turquette <mturquette@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
Linus Torvalds [Wed, 11 Nov 2009 21:38:59 +0000 (13:38 -0800)]
Merge git://git./linux/kernel/git/mason/btrfs-unstable

* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: fix panic when trying to destroy a newly allocated
  Btrfs: allow more metadata chunk preallocation
  Btrfs: fallback on uncompressed io if compressed io fails
  Btrfs: find ideal block group for caching
  Btrfs: avoid null deref in unpin_extent_cache()
  Btrfs: skip btrfs_release_path in btrfs_update_root and btrfs_del_root
  Btrfs: fix some metadata enospc issues
  Btrfs: fix how we set max_size for free space clusters
  Btrfs: cleanup transaction starting and fix journal_info usage
  Btrfs: fix data allocation hint start

15 years agobtusb bluetooth driver: wait for 'waker' work too before closing
Linus Torvalds [Wed, 11 Nov 2009 21:32:29 +0000 (13:32 -0800)]
btusb bluetooth driver: wait for 'waker' work too before closing

Rafael debugged a resume-time hang (with oopses in workqueue handling)
on his laptop that was due to the 'waker' workqueue entry being
disconnected and then released without the workqueue entry having been
synchronized.

Several people were involved, with Oleg Nesterov doing a debugging patch
showing what workqueue entry was corrupt etc.

This was a regression introduced by commit 7bee549e19 ("Bluetooth: Add
USB autosuspend support to btusb driver") as Rafael points out (not
actually bisected, but it became clear once the bug was found).

Tested-and-reported-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Oliver Neukum <oliver@neukum.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoBtrfs: fix panic when trying to destroy a newly allocated
Josef Bacik [Wed, 11 Nov 2009 20:53:34 +0000 (15:53 -0500)]
Btrfs: fix panic when trying to destroy a newly allocated

There is a problem where iget5_locked will look for an inode, not find it, and
then subsequently try to allocate it.  Another CPU will have raced in and
allocated the inode instead, so when iget5_locked gets the inode spin lock again
and does a search, it finds the new inode.  So it goes ahead and calls
destroy_inode on the inode it just allocated.  The problem is we don't set
BTRFS_I(inode)->root until the new inode is completely initialized.  This patch
makes us set root to NULL when alloc'ing a new inode, so when we get to
btrfs_destroy_inode and we see that root is NULL we can just free up the memory
and continue on.  This fixes the panic

http://www.kerneloops.org/submitresult.php?number=812690

Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
15 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux...
Linus Torvalds [Wed, 11 Nov 2009 19:52:22 +0000 (11:52 -0800)]
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:
  JBD/JBD2: free j_wbuf if journal init fails.
  ext3: Wait for proper transaction commit on fsync
  ext3: retry failed direct IO allocations

15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Wed, 11 Nov 2009 19:35:04 +0000 (11:35 -0800)]
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 - possible read past array alc88[02]_parse_auto_config()
  sound: rawmidi: fix MIDI device O_APPEND error handling
  sound: rawmidi: fix checking of O_APPEND when opening MIDI device
  sound: rawmidi: fix double init when opening MIDI device with O_APPEND
  ALSA: hda - Avoid quirk for HP dc5750
  ALSA: hda - Tweak OLPC XO-1.5 microphone bias
  ALSA: hda: Use model=auto quirk for Sony VAIO VGN-FW170J using ALC262

15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...
Linus Torvalds [Wed, 11 Nov 2009 19:34:14 +0000 (11:34 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/pci-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  x86/PCI: Adjust GFP mask handling for coherent allocations
  PCI ASPM: fix oops on root port removal

15 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Wed, 11 Nov 2009 19:33:08 +0000 (11:33 -0800)]
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: pasemi_defconfig update
  powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx
  powerpc/8xxx: enable IPsec ESP by default on mpc83xx/mpc85xx
  powerpc/83xx: Fix u-boot partion size for MPC8377E-WLAN boards
  powerpc/85xx: Fix USB GPIOs for MPC8569E-MDS boards
  powerpc/82xx: kmalloc failure ignored in ep8248e_mdio_probe()
  powerpc/85xx: sbc8548 - fixup of PCI-e related DTS fields

15 years agoMerge master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Wed, 11 Nov 2009 19:32:42 +0000 (11:32 -0800)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: Use a definition for the userspace cmpxchg emulation syscall
  [ARM] Fix test for unimplemented ARM syscalls
  ARM: 5784/1: fix early boot machine ID mismatch error display
  [ARM] orion5x: update defconfig
  [ARM] Kirkwood: update defconfig
  [ARM] Kirkwood: clarify PCIe MEM bus/physical address distinction
  [ARM] kirkwood: fix PCI I/O port assignment
  [ARM] kirkwood: fix section mismatch
  [ARM] OpenRD base: Initialize PCI express and i2c
  [ARM] properly report mv78100 stepping A1
  ARM: 5780/1: KS8695: Fix macro definition bug in regs-switch.c
  ARM: 5779/1: ep93xx/micro9.c: fix implicit declaration of function __raw_readl and IOMEM
  RealView: Add sparsemem support for the RealView PBX platform
  RealView: Remove duplicated #define REALVIEW_SYS_FLAGS* statements
  RealView: Add default memory configuration
  Check whether the SCU was already initialised
  ARMv7: Check whether the SMP/nAMP mode was already enabled
  [ARM] pxa: fix resume failure by saving/restoring IPRx registers
  [ARM] pxa/palm: fix incorrect initialization of Palm Tungsten C keyboard
  [ARM] pxa/zaurus: fix NAND flash OOB layout for Borzoi

15 years agoMerge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Wed, 11 Nov 2009 19:32:04 +0000 (11:32 -0800)]
Merge branch 'drm-linus' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (52 commits)
  drm/kms: Init the CRTC info fields for modes forced from the command line.
  drm/radeon/r600: CS parser updates
  drm/radeon/kms: add debugfs for power management for AtomBIOS devices
  drm/radeon/kms: initial mode validation support
  drm/radeon/kms/atom/dce3: call transmitter init on mode set
  drm/radeon/kms: store detailed connector info
  drm/radeon/kms/atom/dce3: fix up usPixelClock calculation for Transmitter tables
  drm/radeon/kms/r600: fix rs880 support v2
  drm/radeon/kms/r700: fix some typos in chip init
  drm/radeon/kms: remove some misleading debugging output
  drm/radeon/kms: stop putting VRAM at 0 in MC space on r600s.
  drm/radeon/kms: disable D1VGA and D2VGA if enabled
  drm/radeon/kms: Don't RMW CP_RB_CNTL
  drm/radeon/kms: fix coherency issues on AGP cards.
  drm/radeon/kms: fix rc410 suspend/resume.
  drm/radeon/kms: add quirk for hp dc5750
  drm/radeon/kms/atom: fix potential oops in spread spectrum code
  drm/kms: typo fix
  drm/radeon/kms/atom: Make card_info per device
  drm/radeon/kms/atom: Fix DVO support
  ...

15 years agoMerge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 11 Nov 2009 19:30:15 +0000 (11:30 -0800)]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  highmem: Fix debug_kmap_atomic() to also handle KM_IRQ_PTE, KM_NMI, and KM_NMI_PTE
  highmem: Fix race in debug_kmap_atomic() which could cause warn_count to underflow
  rcu: Fix long-grace-period race between forcing and initialization
  uids: Prevent tear down race

15 years agoMerge branch 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 11 Nov 2009 19:29:58 +0000 (11:29 -0800)]
Merge branch 'irq-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: try_one_irq() must be called with irq disabled

15 years agoMerge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 11 Nov 2009 19:29:34 +0000 (11:29 -0800)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf tools: Fix permission checks
  perf_events: Fix some typo in the perf events config description

15 years agoMerge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 11 Nov 2009 19:29:24 +0000 (11:29 -0800)]
Merge branch 'sched-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Use root_task_group_empty only with FAIR_GROUP_SCHED
  sched: Fix kernel-doc function parameter name

15 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 11 Nov 2009 19:29:10 +0000 (11:29 -0800)]
Merge branch 'x86-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, amd-ucode: Check UCODE_MAGIC before loading the container file
  x86: Fix error return sequence in __ioremap_caller()
  x86: Add Phoenix/MSC BIOSes to lowmem corruption list

15 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Linus Torvalds [Wed, 11 Nov 2009 19:28:11 +0000 (11:28 -0800)]
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: partial revert to fix double brelse WARNING()
  ext4: Fix return value of ext4_split_unwritten_extents() to fix direct I/O
  ext4: code clean up for dio fallocate handling
  ext4: skip conversion of uninit extents after direct IO if there isn't any
  ext4: fix ext4_ext_direct_IO()'s return value after converting uninit extents
  ext4: discard preallocation when restarting a transaction during truncate

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
Linus Torvalds [Wed, 11 Nov 2009 19:27:49 +0000 (11:27 -0800)]
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] SBC-FITPC2 watchdog driver registration fix

15 years agoMerge branch 'fixes-s3c-2632-rc6' of git://git.fluff.org/bjdooks/linux
Linus Torvalds [Wed, 11 Nov 2009 19:27:26 +0000 (11:27 -0800)]
Merge branch 'fixes-s3c-2632-rc6' of git://git.fluff.org/bjdooks/linux

* 'fixes-s3c-2632-rc6' of git://git.fluff.org/bjdooks/linux:
  ARM: S3C64XX: DMA: Free node for non-circular queues
  ARM: S3C64XX: DMA: Callback with correct buffer pointer
  ARM: S3C64XX: DMA: Make src and dst transfer size same
  ARM: S3C64XX: DMA: Unify callback functions for success/failure
  ARM: S3C64XX: DMA: Protect buffer pointers while manipulation
  ARM: S3C64XX: Tidy definition and comments in s3c_dma_has_circular()
  ARM: S3C64XX: Remove duplicate s3c_dma_has_circular() definition for S3C64xx.
  ARM: SMDK6410: Allocate more GPIO space for WM1190-EV1
  ARM: SMDK6410: Configure GPIO pull up for WM835x IRQ line

15 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Wed, 11 Nov 2009 19:26:42 +0000 (11:26 -0800)]
Merge branch 'for_linus' of git://git./linux/kernel/git/mchehab/linux-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (27 commits)
  V4L/DVB (13314): saa7134: set ts_force_val for the Hauppauge WinTV HVR-1150
  V4L/DVB (13313): saa7134: add support for FORCE_TS_VALID mode for mpeg ts input
  V4L/DVB (13311): uvcvideo: Fix compilation warning with 2.6.32 due to type mismatch with abs()
  V4L/DVB (13309): uvcvideo: Ignore the FIX_BANDWIDTH for compressed video
  V4L/DVB (13287): ce6230 - saa7164-cmd: Fix wrong sizeof
  V4L/DVB (13286): pxa-camera: Fix missing sched.h
  V4L/DVB (13264): gspca_mr97310a: Change vstart for CIF sensor type 1 cams
  V4L/DVB (13257): gspca - m5602-s5k4aa: Add vflip for Fujitsu Amilo Xi 2528
  V4L/DVB (13256): gspca - m5602-s5k4aa: Add another MSI GX700 vflip quirk
  V4L/DVB (13255): gspca - m5602-s5k4aa: Add vflip quirk for the Bruneinit laptop
  V4L/DVB (13240): firedtv: fix regression: tuning fails due to bogus error return
  V4L/DVB (13237): firedtv: length field corrupt in ca2host if length>127
  V4L/DVB (13230): s2255drv: Don't conditionalize video buffer completion on waiting processes
  V4L/DVB (13202): smsusb: add autodetection support for three additional Hauppauge USB IDs
  V4L/DVB (13190): em28xx: fix panic that can occur when starting audio streaming
  V4L/DVB (13170): bttv: Fix reversed polarity error when switching video standard
  V4L/DVB (13169): bttv: Fix potential out-of-order field processing
  V4L/DVB (13167): pt1: Fix a compile error on arm
  V4L/DVB (13132): fix use-after-free Oops, resulting from a driver-core API change
  V4L/DVB (13131): pxa_camera: fix camera pixel format configuration
  ...

15 years agoBtrfs: allow more metadata chunk preallocation
Chris Mason [Wed, 11 Nov 2009 15:16:57 +0000 (10:16 -0500)]
Btrfs: allow more metadata chunk preallocation

On an FS where all of the space has not been allocated into chunks yet,
the enospc can return enospc just because the existing metadata chunks
are full.

We get around this by allowing more metadata chunks to be allocated up
to a certain limit, and finding the right limit is a little fuzzy.  The
problem is the reservations for delalloc would preallocate way too much
of the FS as metadata.  We need to start saying no and just force some
IO to happen.

But we also need to let a reasonable amount of the FS become metadata.
This bumps the hard limit up, later releases will have a better system.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
15 years agoBtrfs: fallback on uncompressed io if compressed io fails
Josef Bacik [Wed, 11 Nov 2009 02:23:48 +0000 (21:23 -0500)]
Btrfs: fallback on uncompressed io if compressed io fails

Currently compressed IO does not deal with not having its entire extent able to
be allocated.  So if we have enough free space to allocate for the extent, but
its not contiguous, it will fail spectacularly.  This patch fixes this by
falling back on uncompressed IO which lets us spread the delalloc extent across
multiple extents.  I tested this by making us randomly think the reservation had
failed to make it fallback on the uncompressed io way and it seemed to work
fine.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>