summaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2009-01-30MIPS: TXx9: Add support for TX4939 internal RTCAtsushi Nemoto
Add platform support to use rtc-tx4939 driver. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: R2: Fix broken installation of cache error handler.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: IP27: Switch from DMA_IP27 to DMA_COHERENTRalf Baechle
The special IP27 DMA code selected by DMA_IP27 has been removed a while ago turning DMA_IP27 into almost a nop. Also fixup the broken logic of its last users memcpy.S and memcpy-inatomic.s. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: Add return value checks to user_termio_to_kernel_termios()Ralf Baechle
And while at it, convert all functions from macros to inline functions for sanity. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: Octeon: Remove duplicated #includesHuang Weiyi
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: atomic_*(): Change type of intermediate variables.Ralf Baechle
This shaves of 1912 bytes of an IP27 defconfig kernel and avoids unexpected overflow behaviour in atomic_sub_if_positive. Apply the same changes to the atomic64_* functions for consistency. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: Port "mm: invoke oom-killer from page fault" from UML / x86Ralf Baechle
Original commit 1c0fe6e3bda0464728c23c8d84aa47567e8b716c. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: Avoid destructive invalidation on partial cachelines.Ralf Baechle
See discussion e9c3a7c20901051031y528d0d31r18d44c5096c59e0@mail.gmail.com. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30MIPS: SMTC: Fix build after recent creditial changes.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-01-30Allow opportunistic merging of VM_CAN_NONLINEAR areasLinus Torvalds
Commit de33c8db5910cda599899dd431cc30d7c1018cbf ("Fix OOPS in mmap_region() when merging adjacent VM_LOCKED file segments") unified the vma merging of anonymous and file maps to just one place, which simplified the code and fixed a use-after-free bug that could cause an oops. But by doing the merge opportunistically before even having called ->mmap() on the file method, it now compares two different 'vm_flags' values: the pre-mmap() value of the new not-yet-formed vma, and previous mappings of the same file around it. And in doing so, it refused to merge the common file case, which adds a marker to say "I can be made non-linear". This fixes it by just adding a set of flags that don't have to match, because we know they are ok to merge. Currently it's only that single VM_CAN_NONLINEAR flag, but at least conceptually there could be others in the future. Reported-and-acked-by: Hugh Dickins <hugh@veritas.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg KH <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: Remove bogus BUG() check in ext4_bmap() ext4: Fix building with EXT4FS_DEBUG ext4: Initialize the new group descriptor when resizing the filesystem ext4: Fix ext4_free_blocks() w/o a journal when files have indirect blocks jbd2: On a __journal_expect() assertion failure printk "JBD2", not "EXT3-fs" ext3: Add sanity check to make_indexed_dir ext4: Add sanity check to make_indexed_dir ext4: only use i_size_high for regular files ext4: fix wrong use of do_div
2009-01-30Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: cfq-iosched: Allow RT requests to pre-empt ongoing BE timeslice block: add sysfs file for controlling io stats accounting Mark mandatory elevator functions in the biodoc.txt include/linux: Add bsg.h to the Kernel exported headers block: silently error an unsupported barrier bio block: Fix documentation for blkdev_issue_flush() block: add bio_rw_flagged() for testing bio->bi_rw block: seperate bio/request unplug and sync bits block: export SSD/non-rotational queue flag through sysfs Fix small typo in bio.h's documentation block: get rid of the manual directory counting in blktrace block: Allow empty integrity profile block: Remove obsolete BUG_ON block: Don't verify integrity metadata on read error
2009-01-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (29 commits) tulip: fix 21142 with 10Mbps without negotiation drivers/net/skfp: if !capable(CAP_NET_ADMIN): inverted logic gianfar: Fix Wake-on-LAN support smsc911x: timeout reaches -1 smsc9420: fix interrupt signalling test failures ucc_geth: Change uec phy id to the same format as gianfar's wimax: fix build issue when debugfs is disabled netxen: fix memory leak in drivers/net/netxen_nic_init.c tun: Add some missing TUN compat ioctl translations. ipv4: fix infinite retry loop in IP-Config net: update documentation ip aliases net: Fix OOPS in skb_seq_read(). net: Fix frag_list handling in skb_seq_read netxen: revert jumbo ringsize ath5k: fix locking in ath5k_config cfg80211: print correct intersected regulatory domain cfg80211: Fix sanity check on 5 GHz when processing country IE iwlwifi: fix kernel oops when ucode DMA memory allocation failure rtl8187: Fix error in setting OFDM power settings for RTL8187L mac80211: remove Michael Wu as maintainer ...
2009-01-30Add enable_ms to jsm driverPaul Larson
This fixes a crash observed when non-existant enable_ms function is called for jsm driver. Signed-off-by: Scott Kilau <Scott.Kilau@digi.com> Signed-off-by: Paul Larson <pl@linux.vnet.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30cfq-iosched: Allow RT requests to pre-empt ongoing BE timesliceDivyesh Shah
This patch adds the ability to pre-empt an ongoing BE timeslice when a RT request is waiting for the current timeslice to complete. This reduces the wait time to disk for RT requests from an upper bound of 4 (current value of cfq_quantum) to 1 disk request. Applied Jens' suggeested changes to avoid the rb lookup and use !cfq_class_rt() and retested. Latency(secs) for the RT task when doing sequential reads from 10G file. | only RT | RT + BE | RT + BE + this patch small (512 byte) reads | 143 | 163 | 145 large (1Mb) reads | 142 | 158 | 146 Signed-off-by: Divyesh Shah <dpshah@google.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30block: add sysfs file for controlling io stats accountingJens Axboe
This allows us to turn off disk stat accounting completely, for the cases where the 0.5-1% reduction in system time is important. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30Mark mandatory elevator functions in the biodoc.txtNikanth Karthikesan
biodoc.txt mentions that elevator functions marked with * are mandatory, but no function is marked with *. Mark the 3 functions which should be implemented by any io scheduler. Signed-off-by: Nikanth Karthikesan <knikanth@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30include/linux: Add bsg.h to the Kernel exported headersBoaz Harrosh
bsg.h in current form is perfectly suitable for user-mode consumption. It is needed together with scsi/sg.h for applications that want to interface with the bsg driver. Currently the few projects that use it would copy it over into the projects. But that is not acceptable for projects that need to provide source and devel packages for distros. This should also be submitted to stable 2.6.28 and 2.6.27 since bsg had a stable API since these Kernels and distro users will need the header for these kernels a swell Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> CC: stable@kernel.org Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30block: silently error an unsupported barrier bioJens Axboe
This fixes a "regression" from 2.6.28, where the barrier probes that file systems may do would trigger additional end request warnings in dmesg. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30block: Fix documentation for blkdev_issue_flush()Theodore Ts'o
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30block: add bio_rw_flagged() for testing bio->bi_rwJens Axboe
The existing functions for checking bio->bi_rw are badly named. So lets mirror what we do for bio->bi_flags testing, use a properly named function so that it's immediately obvious what is being tested. Maintain compatability names for the old macros, eventually we'll get rid of these. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30block: seperate bio/request unplug and sync bitsJens Axboe
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30block: export SSD/non-rotational queue flag through sysfsBartlomiej Zolnierkiewicz
For some devices (i.e. CFA ATA) we can't reliably detect whether the device is of rotational or non-rotational type so we need to leave the final decision about this setting to the user-space. As a bonus do a minor CodingStyle fixup in queue_nomerges_store(). Suggested-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30Fix small typo in bio.h's documentationAlberto Bertogli
Signed-off-by: Alberto Bertogli <albertito@blitiri.com.ar> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30block: get rid of the manual directory counting in blktraceJens Axboe
It can result in a stuck blktrace system, if --kill is used. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30block: Allow empty integrity profileMartin K. Petersen
Allow a block device to allocate and register an integrity profile without providing a template. This allows DM to preallocate a profile to avoid deadlocks during table reconfiguration. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30block: Remove obsolete BUG_ONMartin K. Petersen
Now that bio_vecs are no longer cleared in bvec_alloc_bs() the following BUG_ON must go. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30block: Don't verify integrity metadata on read errorMartin K. Petersen
If we get an I/O error on a read request there is no point in doing a verify pass on the integrity buffer. Adjust the completion path accordingly. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30ext4: Remove bogus BUG() check in ext4_bmap()Theodore Ts'o
The code to support journal-less ext4 operation added a BUG to ext4_bmap() which fired if there was no journal and the EXT4_STATE_JDATA bit was set in the i_state field. This caused running the filefrag program (which uses the FIMBAP ioctl) to trigger a BUG(). The EXT4_STATE_JDATA bit is only used for ext4_bmap(), and it's harmless for the bit to be set. We could add a check in __ext4_journalled_writepage() and ext4_journalled_write_end() to only set the EXT4_STATE_JDATA bit if the journal is present, but that adds an extra test and jump instruction. It's easier to simply remove the BUG check. http://bugzilla.kernel.org/show_bug.cgi?id=12568 Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: stable@kernel.org
2009-01-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: cifs: make sure we allocate enough storage for socket address [CIFS] Make socket retry timeouts consistent between blocking and nonblocking cases [CIFS] some cleanup to dir.c prior to addition of posix_open [CIFS] revalidate parent inode when rmdir done within that directory [CIFS] Rename md5 functions to avoid collision with new rt modules cifs: turn smb_send into a wrapper around smb_sendv
2009-01-30sata_sil: Fix build breakageAlexander Beregalov
Commit e57db7b (SATA Sil: Blacklist system that spins off disks during ACPI power off) breaks build like the following, in both cases when CONFIG_DMI set or not. drivers/ata/sata_sil.c: In function 'sil_broken_system_poweroff': drivers/ata/sata_sil.c:713: error: implicit declaration of function 'dmi_first_match' drivers/ata/sata_sil.c:713: warning: initialization makes pointer from integer without a cast sata_sil.c should include dmi.h Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30Documentation/Changes: add required versions for new filesystemsBill Nottingham
btrfs requires version 0.18 of its tools, and squashfs requires 4.0. ext3 should use and ext4 requires v1.41.4 of e2fsprogs. Signed-off-by: Bill Nottingham <notting@redhat.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> cc: Ted Tso <tytso@mit.edu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30fix emacs indenting howto filename expansionDan Carpenter
I don't think emacs understands tilde expansion, so use "expand-file-name" to do that. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30Documentation: update CodingStyle tips for Emacs usersTeemu Likonen
With the previous Emacs tips example the kernel style was made available for files in the kernel-tree only. This patch updates the tip to add a separate cc-mode indent style ("linux-tabs-only"). This makes it easy to switch between different indent styles and also makes the kernel style easily available for any filetype mode (c++, awk, ...) that is managed by the Emacs cc-mode. Signed-off-by: Teemu Likonen <tlikonen@iki.fi> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30Documentation: move DMA-mapping.txt to Doc/PCI/Randy Dunlap
Move DMA-mapping.txt to Documentation/PCI/. DMA-mapping.txt was supposed to be moved from Documentation/ to Documentation/PCI/. The 00-INDEX files in those two directories were updated, along with a few other text files, but the file itself somehow escaped being moved, so move it and update more text files and source files with its new location. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: Staging: poch: fix verification of memory area Staging: usbip: usbip_start_threads(): handle kernel_thread failure staging: agnx: drivers/staging/agnx/agnx.h needs <linux/io.h> Staging: android: task_get_unused_fd_flags: fix the wrong usage of tsk->signal Staging: android: Add lowmemorykiller documentation. Staging: android: fix build error on 64bit boxes Staging: android: timed_gpio: Fix build to build on kernels after 2.6.25. Staging: android: binder: fix arm build errors Staging: meilhaus: fix Kbuild Staging: comedi: fix Kbuild
2009-01-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: driver-core: fix kernel-doc parameter name UIO: Add missing documentation of features added recently Sync patch for jp_JP/stable_kernel_rules.txt
2009-01-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ASoC: OMAP: Initialize XCCR and RCCR registers in McBSP DAI driver ASoC: Fix null string usage with WM8753 DAIs ALSA: hda - add another MacBook Pro 4, 1 subsystem ID ALSA: hda - Fix compile warning with CONFIG_SND_JACK=n ALSA: hda - Add quirk for HP DV6700 laptop ALSA: hda - Fix PCM reference NID for STAC/IDT analog outputs
2009-01-30Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6Linus Torvalds
* 'linux-next' of git://git.infradead.org/ubi-2.6: UBI: allow direct user-space I/O UBI: fix resource de-allocation UBI: remove unused variable UBI: use nicer 64-bit math UBI: add ioctl compatibility UBI: constify file operations UBI: allow all ioctls UBI: remove unnecessry header inclusion UBI: improve ioctl commentaries UBI: add ioctl for is_mapped operation UBI: add ioctl for unmap operation UBI: add ioctl for map operation
2009-01-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: document difference between hid_blacklist and hid_ignore_list HID: add antec-branded soundgraph imon devices to blacklist HID: fix reversed logic in disconnect testing of hiddev HID: adjust report descriptor fixup for MS 1028 receiver
2009-01-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: lguest: Fix a memory leak with the lg object during launcher close lguest: disable the FORTIFY for lguest. lguest: typos fix
2009-01-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: ieee1394: sbp2: add workarounds for 2nd and 3rd generation iPods firewire: sbp2: add workarounds for 2nd and 3rd generation iPods firewire: sbp2: fix DMA mapping leak on the failure path firewire: sbp2: define some magic numbers as macros firewire: sbp2: fix payload limit at S1600 and S3200 ieee1394: sbp2: don't assume zero model_id or firmware_revision if there is none ieee1394: sbp2: fix payload limit at S1600 and S3200 ieee1394: sbp2: update a help string ieee1394: support for speeds greater than S800 firewire: core: optimize card shutdown ieee1394: ohci1394: increase AT req. retries, fix ack_busy_X from Panasonic camcorders and others firewire: ohci: increase AT req. retries, fix ack_busy_X from Panasonic camcorders and others firewire: ohci: change "context_stop: still active" log message firewire: keep highlevel drivers attached during brief connection loss firewire: unnecessary BM delay after generation rollover firewire: insist on successive self ID complete events
2009-01-30drivers/gpu/drm/i915/intel_lvds.c: fix locking snafuAndrew Morton
s/unlock/lock/ Addresses http://bugzilla.kernel.org/show_bug.cgi?id=12575 Reported-by: Daniel Vetter <daniel@ffwll.ch> Cc: Dave Airlie <airlied@linux.ie> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Eric Anholt <eric@anholt.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30epoll: drop max_user_instances and rely only on max_user_watchesDavide Libenzi
Linus suggested to put limits where the money is, and max_user_watches already does that w/out the need of max_user_instances. That has the advantage to mitigate the potential DoS while allowing pretty generous default behavior. Allowing top 4% of low memory (per user) to be allocated in epoll watches, we have: LOMEM MAX_WATCHES (per user) 512MB ~178000 1GB ~356000 2GB ~712000 A box with 512MB of lomem, will meet some challenge in hitting 180K watches, socket buffers math teaches us. No more max_user_instances limits then. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Cc: Willy Tarreau <w@1wt.eu> Cc: Michael Kerrisk <mtk.manpages@googlemail.com> Cc: Bron Gondwana <brong@fastmail.fm> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30hp-wmi: set initial docking stateFrans Pop
If the initial state is not set when the input device is set up, the first docking event after the module is loaded will be lost. Signed-off-by: Frans Pop <elendil@planet.nl> Acked-by: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30hwmon: applesmc: add support for MacPro 3 temperature sensorsBharath Ramesh
MacPro 3 have more temperature sensors than the previous MacPro's also the sensor THTG has been removed. This patch add supports for the newer temperature sensors in the MacPro3. Signed-off-by: Bharath Ramesh <bramesh@vt.edu> Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30hpilo: increment versionDavid Altobelli
Bump hpilo module version to indicate that the open/close bug is fixed. Signed-off-by: David Altobelli <david.altobelli@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30cgroup: fix root_count when mount fails due to busy subsystemPaul Menage
root_count was being incremented in cgroup_get_sb() after all error checking was complete, but decremented in cgroup_kill_sb(), which can be called on a superblock that we gave up on due to an error. This patch changes cgroup_kill_sb() to only decrement root_count if the root was previously linked into the list of roots. Signed-off-by: Paul Menage <menage@google.com> Tested-by: Serge Hallyn <serue@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30cgroups: add cpu_relax() calls in css_tryget() and cgroup_clear_css_refs()Paul Menage
css_tryget() and cgroup_clear_css_refs() contain polling loops; these loops should have cpu_relax calls in them to reduce cross-cache traffic. Signed-off-by: Paul Menage <menage@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30cgroups: fix lock inconsistency in cgroup_clone()Li Zefan
I fixed a bug in cgroup_clone() in Linus' tree in commit 7b574b7 ("cgroups: fix a race between cgroup_clone and umount") without noticing there was a cleanup patch in -mm tree that should be rebased (now commit 104cbd5, "cgroups: use task_lock() for access tsk->cgroups safe in cgroup_clone()"), thus resulted in lock inconsistency. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Paul Menage <menage@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>