Tao Ma [Mon, 24 Aug 2009 03:13:37 +0000 (11:13 +0800)]
ocfs2: Add refcount tree lock mechanism.
Implement locking around struct ocfs2_refcount_tree. This protects
all read/write operations on refcount trees. ocfs2_refcount_tree
has its own lock and its own caching_info, protecting buffers among
multiple nodes.
User must call ocfs2_lock_refcount_tree before his operation on
the tree and unlock it after that.
ocfs2_refcount_trees are referenced by the block number of the
refcount tree root block, So we create an rb-tree on the ocfs2_super
to look them up.
Joel Becker [Fri, 13 Feb 2009 11:45:49 +0000 (03:45 -0800)]
ocfs2: __ocfs2_mark_extent_written() doesn't need struct inode.
We only allow unwritten extents on data, so the toplevel
ocfs2_mark_extent_written() can use an inode all it wants. But the
subfunction isn't even using the inode argument.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Joel Becker [Fri, 13 Feb 2009 11:18:34 +0000 (03:18 -0800)]
ocfs2: Make extent map insertion an extent_tree_operation.
ocfs2_insert_extent() wants to insert a record into the extent map if
it's an inode data extent. But since many btrees can call that
function, let's make it an op on ocfs2_extent_tree. Other tree types
can leave it empty.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Joel Becker [Fri, 13 Feb 2009 10:50:12 +0000 (02:50 -0800)]
ocfs2: Make truncating the extent map an extent_tree_operation.
ocfs2_remove_extent() wants to truncate the extent map if it's
truncating an inode data extent. But since many btrees can call that
function, let's make it an op on ocfs2_extent_tree. Other tree types
can leave it empty.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Joel Becker [Fri, 13 Feb 2009 10:24:10 +0000 (02:24 -0800)]
ocfs2: ocfs2_grow_branch() and ocfs2_append_rec_to_path() lose struct inode.
ocfs2_grow_branch() not really using it other than to pass it to the
subfunctions ocfs2_shift_tree_depth(), ocfs2_find_branch_target(), and
ocfs2_add_branch(). The first two weren't it either, so they drop the
argument. ocfs2_add_branch() only passed it to
ocfs2_adjust_rightmost_branch(), which drops the inode argument and uses
the ocfs2_extent_tree as well.
ocfs2_append_rec_to_path() can be take an ocfs2_extent_tree instead of
the inode. The function ocfs2_adjust_rightmost_records() goes along for
the ride.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Joel Becker [Fri, 13 Feb 2009 10:09:31 +0000 (02:09 -0800)]
ocfs2: ocfs2_rotate_tree_left() no longer needs struct inode.
It already gets ocfs2_extent_tree, so we can just use that. This chains
to the same modification for ocfs2_remove_rightmost_path() and
ocfs2_rotate_rightmost_leaf_left().
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Joel Becker [Fri, 13 Feb 2009 01:49:26 +0000 (17:49 -0800)]
ocfs2: Pass ocfs2_caching_info to ocfs2_read_extent_block().
extent blocks belong to btrees on more than just inodes, so we want to
pass the ocfs2_caching_info structure directly to
ocfs2_read_extent_block(). A number of places in alloc.c can now drop
struct inode from their argument list.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Joel Becker [Fri, 13 Feb 2009 01:32:34 +0000 (17:32 -0800)]
ocfs2: Store the ocfs2_caching_info on ocfs2_extent_tree.
What do we cache? Metadata blocks. What are most of our non-inode metadata
blocks? Extent blocks for our btrees. struct ocfs2_extent_tree is the
main structure for managing those. So let's store the associated
ocfs2_caching_info there.
This means that ocfs2_et_root_journal_access() doesn't need struct inode
anymore, and any place that has an et can refer to et->et_ci instead of
INODE_CACHE(inode).
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Joel Becker [Fri, 13 Feb 2009 00:41:25 +0000 (16:41 -0800)]
ocfs2: Pass struct ocfs2_caching_info to the journal functions.
The next step in divorcing metadata I/O management from struct inode is
to pass struct ocfs2_caching_info to the journal functions. Thus the
journal locks a metadata cache with the cache io_lock function. It also
can compare ci_last_trans and ci_created_trans directly.
This is a large patch because of all the places we change
ocfs2_journal_access..(handle, inode, ...) to
ocfs2_journal_access..(handle, INODE_CACHE(inode), ...).
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Joel Becker [Thu, 12 Feb 2009 23:41:59 +0000 (15:41 -0800)]
ocfs2: move ip_created_trans to struct ocfs2_caching_info
Similar ip_last_trans, ip_created_trans tracks the creation of a journal
managed inode. This specifically tracks what transaction created the
inode. This is so the code can know if the inode has ever been written
to disk.
This behavior is desirable for any journal managed object. We move it
to struct ocfs2_caching_info as ci_created_trans so that any object
using ocfs2_caching_info can rely on this behavior.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Joel Becker [Thu, 12 Feb 2009 23:24:40 +0000 (15:24 -0800)]
ocfs2: move ip_last_trans to struct ocfs2_caching_info
We have the read side of metadata caching isolated to struct
ocfs2_caching_info, now we need the write side. This means the journal
functions. The journal only does a couple of things with struct inode.
This change moves the ip_last_trans field onto struct
ocfs2_caching_info as ci_last_trans. This field tells the journal
whether a pending journal flush is required.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Joel Becker [Wed, 11 Feb 2009 04:00:41 +0000 (20:00 -0800)]
ocfs2: Take the inode out of the metadata read/write paths.
We are really passing the inode into the ocfs2_read/write_blocks()
functions to get at the metadata cache. This commit passes the cache
directly into the metadata block functions, divorcing them from the
inode.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Joel Becker [Wed, 11 Feb 2009 03:00:37 +0000 (19:00 -0800)]
ocfs2: Change metadata caching locks to an operations structure.
We don't really want to cart around too many new fields on the
ocfs2_caching_info structure. So let's wrap all our access of the
parent object in a set of operations. One pointer on caching_info, and
more flexibility to boot.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Joel Becker [Wed, 11 Feb 2009 00:05:07 +0000 (16:05 -0800)]
ocfs2: Make the ocfs2_caching_info structure self-contained.
We want to use the ocfs2_caching_info structure in places that are not
inodes. To do that, it can no longer rely on referencing the inode
directly.
This patch moves the flags to ocfs2_caching_info->ci_flags, stores
pointers to the parent's locks on the ocfs2_caching_info, and renames
the constants and flags to reflect its independant state.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Tao Ma [Thu, 27 Aug 2009 06:46:56 +0000 (14:46 +0800)]
ocfs2: invalidate dentry if its dentry_lock isn't initialized.
In commit a5a0a630922a2f6a774b6dac19f70cb5abd86bb0, when
ocfs2_attch_dentry_lock fails, we call an extra iput and reset
dentry->d_fsdata to NULL. This resolve a bug, but it isn't
completed and the dentry is still there. When we want to use
it again, ocfs2_dentry_revalidate doesn't catch it and return
true. That make future ocfs2_dentry_lock panic out.
One bug is http://oss.oracle.com/bugzilla/show_bug.cgi?id=1162.
The resolution is to add a check for dentry->d_fsdata in
revalidate process and return false if dentry->d_fsdata is NULL,
so that a new ocfs2_lookup will be called again.
Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
ocfs2/dlm: Wait on lockres instead of erroring cancel requests
In case a downconvert is queued, and a flock receives a signal,
BUG_ON(lockres->l_action != OCFS2_AST_INVALID) is triggered
because a lock cancel triggers a dlmunlock while an AST is
scheduled.
To avoid this, allow a LKM_CANCEL to pass through, and let it
wait on __dlm_wait_on_lockres().
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.de> Acked-off-by: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Jan Kara [Thu, 20 Aug 2009 16:26:52 +0000 (18:26 +0200)]
ocfs2: Add missing lock name
There is missing name for NFSSync cluster lock. This makes lockdep unhappy
because we end up passing NULL to lockdep when initializing lock key. Fix it.
Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Jan Kara [Mon, 3 Aug 2009 16:24:21 +0000 (18:24 +0200)]
ocfs2: Handle quota file corruption more gracefully
ocfs2_read_virt_blocks() does BUG when we try to read a block from a file
beyond its end. Since this can happen due to filesystem corruption, it
is not really an appropriate answer. Make ocfs2_read_quota_block() check
the condition and handle it by calling ocfs2_error() and returning EIO.
[ Modified to print ip_blkno in the error - Joel ]
Reported-by: Tristan Ye <tristan.ye@oracle.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Jan Kara [Thu, 6 Aug 2009 21:29:34 +0000 (23:29 +0200)]
ocfs2: Fix possible deadlock when extending quota file
In OCFS2, allocator locks rank above transaction start. Thus we
cannot extend quota file from inside a transaction less we could
deadlock.
We solve the problem by starting transaction not already in
ocfs2_acquire_dquot() but only in ocfs2_local_read_dquot() and
ocfs2_global_read_dquot() and we allocate blocks to quota files before starting
the transaction. In case we crash, quota files will just have a few blocks
more but that's no problem since we just use them next time we extend the
quota file.
Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Sunil Mushran [Thu, 6 Aug 2009 23:12:58 +0000 (16:12 -0700)]
ocfs2: Initialize the cluster we're writing to in a non-sparse extend
In a non-sparse extend, we correctly allocate (and zero) the clusters between
the old_i_size and pos, but we don't zero the portions of the cluster we're
writing to outside of pos<->len.
It handles clustersize > pagesize and blocksize < pagesize.
[Cleaned up by Joel Becker.]
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Jan Kara [Wed, 22 Jul 2009 11:17:20 +0000 (13:17 +0200)]
ocfs2: Remove syncjiff field from quota info
syncjiff is just a converted value of syncms. Some places which
are updating syncms forgot to update syncjiff as well. Since the
conversion is just a simple division / multiplication and it does
not happen frequently, just remove the syncjiff field to avoid
forgotten conversions.
Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Jan Kara [Wed, 22 Jul 2009 11:17:17 +0000 (13:17 +0200)]
ocfs2: Initialize blocks allocated to local quota file
When we extend local quota file, we should initialize data
in newly allocated block. Firstly because on recovery we could
parse bogus data, secondly so that block checksums are properly
computed.
Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Jan Kara [Wed, 22 Jul 2009 11:17:16 +0000 (13:17 +0200)]
ocfs2: Mark buffer uptodate before calling ocfs2_journal_access_dq()
In a code path extending local quota files we marked new header
buffer uptodate only after calling ocfs2_journal_access_dq() which
triggers a bug. Fix it and also call ocfs2 variant of the function
marking buffer uptodate.
Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Jan Kara [Wed, 22 Jul 2009 11:17:15 +0000 (13:17 +0200)]
ocfs2: Make global quota files blocksize aligned
Change i_size of global quota files so that it always remains aligned to block
size. This is mainly because the end of quota block may contain checksum (if
checksumming is enabled) and it's a bit awkward for it to be "outside" of quota
file (and it makes life harder for ocfs2-tools).
Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Tao Ma [Thu, 23 Jul 2009 00:12:58 +0000 (08:12 +0800)]
ocfs2: Use ocfs2_rec_clusters in ocfs2_adjust_adjacent_records.
In ocfs2_adjust_adjacent_records, we will adjust adjacent records
according to the extent_list in the lower level. But actually
the lower level tree will either be a leaf or a branch. If we only
use ocfs2_is_empty_extent we will meet with some problem if the lower
tree is a branch (tree_depth > 1). So use !ocfs2_rec_clusters instead.
And actually only the leaf record can have holes. So add a BUG_ON
for non-leaf branch.
Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Jan Kara [Mon, 20 Jul 2009 10:12:36 +0000 (12:12 +0200)]
ocfs2: Fix deadlock on umount
In commit ea455f8ab68338ba69f5d3362b342c115bea8e13, we moved the dentry lock
put process into ocfs2_wq. This causes problems during umount because ocfs2_wq
can drop references to inodes while they are being invalidated by
invalidate_inodes() causing all sorts of nasty things (invalidate_inodes()
ending in an infinite loop, "Busy inodes after umount" messages etc.).
We fix the problem by stopping ocfs2_wq from doing any further releasing of
inode references on the superblock being unmounted, wait until it finishes
the current round of releasing and finally cleaning up all the references in
dentry_lock_list from ocfs2_put_super().
The issue was tracked down by Tao Ma <tao.ma@oracle.com>.
Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Tao Ma [Tue, 21 Jul 2009 07:42:05 +0000 (15:42 +0800)]
ocfs2: Add extra credits and access the modified bh in update_edge_lengths.
In normal tree rotation left process, we will never touch the tree
branch above subtree_index and ocfs2_extend_rotate_transaction doesn't
reserve the credits for them either.
But when we want to delete the rightmost extent block, we have to update
the rightmost records for all the rightmost branch(See
ocfs2_update_edge_lengths), so we have to allocate extra credits for them.
What's more, we have to access them also.
Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Wengang Wang [Mon, 13 Jul 2009 03:38:58 +0000 (11:38 +0800)]
ocfs2: Fail ocfs2_get_block() immediately when a block needs allocation
ocfs2_get_block() does no allocation. Hole filling for writes should
have happened farther up in the call chain. We detect this case and
print an error, but we then continue with the function. We should be
exiting immediately.
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
ocfs2: Fix compilation warning for fs/ocfs2/xattr.c
gcc 4.4.1 generates the following build warning on i386:
CC [M] fs/ocfs2/xattr.o
fs/ocfs2/xattr.c: In function ‘ocfs2_xattr_block_get’:
fs/ocfs2/xattr.c:1055: warning: ‘block_off’ may be used uninitialized in this function
The following fix is based on a similar approach by David Howells
few days back: http://lkml.org/lkml/2009/7/9/109,
Signed-off-by: Subrata Modak<subrata@linux.vnet.ibm.com>, Signed-off-by: Joel Becker <joel.becker@oracle.com>
ocfs2: Initialize count in aio_write before generic_write_checks
generic_write_checks() expects count to be initialized to the size of
the write. Writes to files open with O_DIRECT|O_LARGEFILE write 0 bytes
because count is uninitialized.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.de> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Jeff Liu [Tue, 7 Jul 2009 07:51:40 +0000 (15:51 +0800)]
ocfs2: trivial fix for s/migrate/migration/ in dlmrecovery.c logging
in dlmrecovery.c:1121, replace 'migrate' to 'migration' to keep the consistency
by comparing to other lines with the similar log info in the same file.
Signed-off-by: Jeff Liu <jeff.liu@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Jeff Mahoney [Tue, 7 Jul 2009 21:22:12 +0000 (17:22 -0400)]
ocfs2: Fixup orphan scan cleanup after failed mount
If the mount fails for any reason, ocfs2_dismount_volume calls
ocfs2_orphan_scan_stop. It requires that ocfs2_orphan_scan_init
be called to setup the mutex and work queues, but that doesn't
happen if the mount has failed and we oops accessing an uninitialized
work queue.
This patch splits the init and startup of the orphan scan, eliminating
the oops.
Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Yinghai Lu [Wed, 8 Jul 2009 16:50:19 +0000 (09:50 -0700)]
x86: don't clear nodes_states[N_NORMAL_MEMORY] when numa is not compiled in
Alex found that specjbb2005 still can not run with hugepages on an
x86-64 machine. This only happens when numa is not compiled in.
The root cause: node_set_state will not set it back for us in that case,
so don't clear that when numa is not select in config
[ v2: use node_clear_state instead ] Reported-and-Tested-by: Alex Shi <alex.shi@intel.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Mon, 6 Jul 2009 20:05:40 +0000 (13:05 -0700)]
Remove multiple KERN_ prefixes from printk formats
Commit 5fd29d6ccbc98884569d6f3105aeca70858b3e0f ("printk: clean up
handling of log-levels and newlines") changed printk semantics. printk
lines with multiple KERN_<level> prefixes are no longer emitted as
before the patch.
<level> is now included in the output on each additional use.
Remove all uses of multiple KERN_<level>s in formats.
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alan Cox [Tue, 7 Jul 2009 15:39:41 +0000 (16:39 +0100)]
pty: Rework the pty layer to use the normal buffering logic
This fixes the ppp problems and various other issues with call locking
caused by one side of a pty called in one locking context trying to match
another with differing rules on the other side. We also get a big slack
space to work with that means we can bury the flow control deadlock case
for any conceivable real world situation.
Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] Powernow-k8: support family 0xf with 2 low p-states
[CPUFREQ] fix (utter) cpufreq_add_dev mess
[CPUFREQ] Cleanup locking in conservative governor
[CPUFREQ] Cleanup locking in ondemand governor
[CPUFREQ] Mark policy_rwsem as going static in cpufreq.c wont be exported
[CPUFREQ] Eliminate the recent lockdep warnings in cpufreq
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
PM: Clear -EAGAIN in dpm_prepare
x86: Fix resume from suspend when CONFIG_CC_STACKPROTECTOR
Sheng Yang [Wed, 8 Jul 2009 10:52:52 +0000 (11:52 +0100)]
intel-iommu: Fix intel_iommu_unmap_range() with size 0
After some API change, intel_iommu_unmap_range() introduced a assumption that
parameter size != 0, otherwise the dma_pte_clean_range() would have a
overflowed argument. But the user like KVM don't have this assumption before,
then some BUG() triggered.
Fix it by ignoring size = 0.
Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The f_dev in _request_firmware() is allocated via the fw_setup_device()
and fw_register_device() calls and its class set to firmware_class (the
class release function is fw_dev_release).
Commit 6acf70f078ca replaced the kfree(dev) in fw_dev_release() with a
put_device() call but my understanding is that the release function is
called via put_device -> kobject_put -> kref_put -> koject_release etc.
and it should call kfree since it's the last to see this device
structure alive.
Because of that, the _request_firmware() function on its -ENOENT error
path only calls device_unregister(f_dev) which would eventually call
fw_dev_release() but there is no kfree (the subsequent put_device call
would just make the kref negative).
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Free the memory allocated by memdup_user() in fs/sysfs/bin.c
Commit 1c8542c7bb replaced kmalloc() with memdup_user() in the write()
function but also dropped the kfree(temp). The memdup_user() function
allocates memory which is never freed.
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: gpio_mouse - use standard driver registration method
Input: mark serio and i8042 as suspended when hibernating too
Input: add support for generic GPIO-based matrix keypad
Input: arrange keyboards alphabetically
Input: gpio-keys - avoid possibility of sleeping in timer function
Input: gpio-keys - revert 'change timer to workqueue'
Input: dm355evm_keys - fix kconfig symbol names
Input: wacom - add DTF720a support and fix rotation on Intuos3
Input: i8042 - more reset quirks for MSI Wind-clone netbooks
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc: Don't use alloc_bootmem() in init_IRQ() path
powerpc: Fix spin_event_timeout() to be robust over context switches
powerpc: Use pr_devel() in do_dcache_icache_coherency()
powerpc/cell: Use pr_devel() in axon_msi.c
powerpc: Use pr_devel() in arch/powerpc/mm/gup.c
powerpc: Cleanup & use pr_devel() in arch/powerpc/mm/slb.c
powerpc/perf_counter: Remove duplicated #include
powerpc: Use pr_devel() in arch/powerpc/mm/mmu_context_nohash.c
powerpc/pseries: Use pr_devel() in xics.c
powerpc: Remove unnecessary semicolons
powerpc/pseries: Use pr_devel() in pseries LPAR HPTE routines
powerpc/44x: Fix build error with -Werror for Warp platform
powerpc/4xx: Have Warp take advantage of GPIO LEDs default-state = keep
powerpc/44x: Update Warp defconfig
- exit_mnt_ns() isn't used, remove it
- done that, sched.h and nsproxy.h inclusions aren't needed
- mount.h inclusion was need for vfsmount_lock, but no longer
- remove mnt_namespace.h inclusion from files which don't use anything
from mnt_namespace.h
In file included from fs/proc/kcore.c:17:
include/linux/elfcore.h: In function 'elf_core_copy_task_regs':
include/linux/elfcore.h:129: error: implicit declaration of function 'task_pt_regs'
Fix this by restoring the previous behavior of returning 0 for all arches
like UML that don't define task_pt_regs.
Sebastian Ott [Wed, 8 Jul 2009 11:26:05 +0000 (13:26 +0200)]
PM: Clear -EAGAIN in dpm_prepare
When the last device in the dpm list is unregistered directly after its
prepare() callback returned with -EAGAIN, the return code is passed to
the calling function, resulting in a suspend failure. Prevent this by
clearing the return code after -EAGAIN.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Peter Chubb [Wed, 8 Jul 2009 11:20:13 +0000 (13:20 +0200)]
x86: Fix resume from suspend when CONFIG_CC_STACKPROTECTOR
Patch 08687aec71bc9134fe336e561f6did877bacf74fc0a (x86: unify
power/cpu_(32|64).c) renamed cpu_32.c to cpu.c, but did not update
the special compilation flags for the file for the new name.
This patch fixes the compilation flags, and therefore fixes resume
from suspend on my Acer Aspire One.
[rjw: The regression from 2.6.30 fixed by this patch is tracked as
http://bugzilla.kernel.org/show_bug.cgi?id=13661]
Signed-off-by: Peter Chubb <peterc@nicta.com.au> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
projects / mv-sheeva.git / log