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2011-04-17fs: synchronize_rcu when unregister_filesystem success not failureMilton Miller
While checking unregister_filesystem for saftey vs extra calls for "ext4: register ext2 and ext3 alias after ext4" I realized that the synchronize_rcu() was called on the error path but not on the success path. Cc: stable (2.6.38) Signed-off-by: Milton Miller <miltonm@bga.com> [ This probably won't really make a difference since commit d863b50ab013 ("vfs: call rcu_barrier after ->kill_sb()"), but it's the right thing to do. - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-17cx23885: Fix stv0367 Kconfig dependencyMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-04-17[media] omap3isp: Use isp xclk definesStanimir Varbanov
Use isp defines for isp xclk selection in isp_set_xclk(). Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-04-17[media] omap3isp: isp: Reset the ISP when the pipeline can't be stoppedLaurent Pinchart
When a failure to stop a module in the pipeline is detected, the only way to recover is to reset the ISP. However, as other users can be using a different pipeline with other modules, the ISP can't be reset synchronously with the error detection. Mark the ISP as needing a reset when a failure to stop a pipeline is detected, and reset the ISP when the last user releases the last reference to the ISP. Modify the omap3isp_pipeline_set_stream() function to record the new ISP pipeline state only when no error occurs, except when stopping the pipeline in which case the pipeline is still marked as stopped. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-04-17[media] omap3isp: stat: update struct ispstat_generic_config's commentsDavid Cohen
struct ispstat_generic_config's comments refers to isph3a_aewb_config, isph3a_af_config and isphist_config. But those structs have had their names prefixed with 'omap3'. So, let's update the comments. Signed-off-by: David Cohen <david.cohen@nokia.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-04-17[media] media: Properly handle link flags in link setup, link notify callbackLaurent Pinchart
The link flags were not properly handled in __media_entity_setup_link which could lead to link_notify callback to be called when the flags are not modified. Fix this. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-04-17[media] omap3isp: Fix trivial typosMichael Jones
It doesn't get more trivial than these. Signed-off-by: Michael Jones <michael.jones@matrix-vision.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-04-17[media] omap3isp: resizer: Improved resizer rsz factor formulaSakari Ailus
Round properly the rsz factor so that we get highest rsz so that the input width (or height) is highest possible smaller or equal to what the user asks. Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-04-17[media] omap3isp: resizer: Use 4-tap mode equations when the ratio is <= 512Laurent Pinchart
As the number of phases/taps, used to select the correct equations to compute the ratio, depends on the ratio, start with the 7-tap mode equations to compute an approximation of the ratio, and switch to the 4-tap mode equations if the approximation is lower than or equal to 512. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-04-17i2c-algo-bit: Call pre/post_xfer for bit_testAlex Deucher
Apparently some distros set i2c-algo-bit.bit_test to 1 by default. In some cases this causes i2c_bit_add_bus to fail and prevents the i2c bus from being added. In the radeon case, we fail to add the ddc i2c buses which prevents the driver from being able to detect attached monitors. The i2c bus works fine even if bit_test fails. This is likely due to gpio switching that is required and handled in the pre/post_xfer hooks, so call the pre/post_xfer hooks in the bit test as well. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=36221 Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: stable@kernel.org [.38 down to .34]
2011-04-17i2c: Improve deprecation warningsJean Delvare
When warning on the use of deprecated i2c_driver methods attach_adapter and detach_adapter, mention the name of the driver which needs to be updated. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-16ARM: 6881/1: cputype.h uses __attribute_const__ which requires including ↵Jonathan Cameron
kernel.h Issue manifests as: In file included from arch/arm/mach-pxa/include/mach/hardware.h:62, from arch/arm/mach-pxa/include/mach/gpio.h:28, from /home/jic23/src/kernel/temp-remove/arch/arm/include/asm/gpio.h:5, from include/linux/gpio.h:7, from drivers/staging/iio/gyro/adis16080_core.c:8: /home/jic23/src/kernel/temp-remove/arch/arm/include/asm/cputype.h:57: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'read_cpuid_id' ... Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-04-16Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: make unplug timer trace event correspond to the schedule() unplug block: let io_schedule() flush the plug inline
2011-04-16Merge branch 'usb-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 * 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (43 commits) Revert "USB: isp1760-hcd: move imask clear after pending work is done" xHCI: Implement AMD PLL quirk xhci: Tell USB core both roothubs lost power. usbcore: Bug fix: system can't suspend with USB3.0 device connected to USB3.0 hub USB: Fix unplug of device with active streams USB: xhci - also free streams when resetting devices xhci: Fix NULL pointer deref in handle_port_status() USB: xhci - fix math in xhci_get_endpoint_interval() USB: xhci: simplify logic of skipping missed isoc TDs USB: xhci - remove excessive 'inline' markings USB: xhci: unsigned char never equals -1 USB: xhci - fix unsafe macro definitions USB: fix formatting of SuperSpeed endpoints in /proc/bus/usb/devices USB: isp1760-hcd: move imask clear after pending work is done USB: fsl_qe_udc: send ZLP when zero flag and length % maxpacket == 0 usb: qcserial add missing errorpath kfrees usb: qcserial avoid pointing to freed memory usb: Fix qcserial memory leak on rmmod USB: ftdi_sio: add ids for Hameg HO720 and HO730 USB: option: Added support for Samsung GT-B3730/GT-B3710 LTE USB modem. ...
2011-04-16Merge branches 'core-fixes-for-linus', 'perf-fixes-for-linus', ↵Linus Torvalds
'sched-fixes-for-linus', 'timer-fixes-for-linus' and 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/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: futex: Set FLAGS_HAS_TIMEOUT during futex_wait restart setup * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf_event: Fix cgrp event scheduling bug in perf_enable_on_exec() perf: Fix a build error with some GCC versions * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: Fix erroneous all_pinned logic sched: Fix sched-domain avg_load calculation * 'timer-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: RTC: rtc-mrst: follow on to the change of rtc_device_register() RTC: add missing "return 0" in new alarm func for rtc-bfin.c RTC: Fix s3c compile error due to missing s3c_rtc_setpie RTC: Fix early irqs caused by calling rtc_set_alarm too early * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, amd: Disable GartTlbWlkErr when BIOS forgets it x86, NUMA: Fix fakenuma boot failure x86/mrst: Fix boot crash caused by incorrect pin to irq mapping x86/ce4100: Add reg property to bridges
2011-04-16block: make unplug timer trace event correspond to the schedule() unplugJens Axboe
It's a pretty close match to what we had before - the timer triggering would mean that nobody unplugged the plug in due time, in the new scheme this matches very closely what the schedule() unplug now is. It's essentially the difference between an explicit unplug (IO unplug) or an implicit unplug (timer unplug, we scheduled with pending IO queued). Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-04-16block: let io_schedule() flush the plug inlineJens Axboe
Linus correctly observes that the most important dispatch cases are now done from kblockd, this isn't ideal for latency reasons. The original reason for switching dispatches out-of-line was to avoid too deep a stack, so by _only_ letting the "accidental" flush directly in schedule() be guarded by offload to kblockd, we should be able to get the best of both worlds. So add a blk_schedule_flush_plug() that offloads to kblockd, and only use that from the schedule() path. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-04-16Btrfs: avoid taking the chunk_mutex in do_chunk_allocJosef Bacik
Everytime we try to allocate disk space we try and see if we can pre-emptively allocate a chunk, but in the common case we don't allocate anything, so there is no sense in taking the chunk_mutex at all. So instead if we are allocating a chunk, mark it in the space_info so we don't get two people trying to allocate at the same time. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> Reviewed-by: Liu Bo <liubo2009@cn.fujitsu.com>
2011-04-16Btrfs end_bio_extent_readpage should look for locked bitsChris Mason
A recent commit caches the extent state in end_bio_extent_readpage, but the search it does should look for locked extents. This fixes things to make it more effective. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-04-15Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: net/9p: nwname should be an unsigned int 9p: Fix sparse error fs/9p: Fix error reported by coccicheck 9p: revert tsyncfs related changes fs/9p: Use write_inode for data sync on server fs/9p: Fix revalidate to return correct value
2011-04-15Merge branch 'for-linus' of git://android.git.kernel.org/kernel/tegraLinus Torvalds
* 'for-linus' of git://android.git.kernel.org/kernel/tegra: arm: tegra: fix error check in tegra2_clocks.c ARM: tegra: gpio: Fix unused variable warnings
2011-04-15Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm: ARM: 6879/1: fix personality test wrt usage of domain handlers ARM: 6878/1: fix personality flag propagation across an exec ARM: 6877/1: the ADDR_NO_RANDOMIZE personality flag should be honored with mmap() ARM: 6876/1: Kconfig.debug: Remove unused CONFIG_DEBUG_ERRORS ARM: pxa: convert incorrect IRQ_TO_IRQ() to irq_to_gpio() ARM: mmp: align NR_BUILTIN_GPIO with gpio interrupt number ARM: pxa: align NR_BUILTIN_GPIO with GPIO interrupt number ARM: pxa: always clear LPM bits for PXA168 MFPR pcmcia: limit pxa2xx_trizeps4 subdriver to trizeps4 platform pcmcia: limit pxa2xx_balloon3 subdriver to balloon3 platform ARM: pxafb: Fix access to nonexistent member of pxafb_info ARM: 6872/1: arch:common:Makefile Remove unused config in the Makefile. ARM: 6868/1: Preserve the VFP state during fork ARM: 6867/1: Introduce THREAD_NOTIFY_COPY for copy_thread() hooks ARM: 6866/1: Do not restrict HIGHPTE to !OUTER_CACHE ARM: 6865/1: perf: ensure pass through zero is counted on overflow ARM: 6864/1: hw_breakpoint: clear DBGVCR out of reset ARM: Only allow PM_SLEEP with CPUs which support suspend ARM: Make consolidated PM sleep code depend on PM_SLEEP
2011-04-15x86, amd: Disable GartTlbWlkErr when BIOS forgets itJoerg Roedel
This patch disables GartTlbWlk errors on AMD Fam10h CPUs if the BIOS forgets to do is (or is just too old). Letting these errors enabled can cause a sync-flood on the CPU causing a reboot. The AMD BKDG recommends disabling GART TLB Wlk Error completely. This patch is the fix for https://bugzilla.kernel.org/show_bug.cgi?id=33012 on my machine. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Link: http://lkml.kernel.org/r/20110415131152.GJ18463@8bytes.org Tested-by: Alexandre Demers <alexandre.f.demers@gmail.com> Cc: <stable@kernel.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-04-15NFSv4.1: Ensure state manager thread dies on last umountTrond Myklebust
Currently, the state manager may continue to try recovering state forever even after the last filesystem to reference that nfs_client has umounted. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
2011-04-15SUNRPC: Fix the SUNRPC Kerberos V RPCSEC_GSS module dependenciesTrond Myklebust
Since kernel 2.6.35, the SUNRPC Kerberos support has had an implicit dependency on a number of additional crypto modules. The following patch makes that dependency explicit. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-04-15vfs: Fix absolute RCU path walk failures due to uninitialized seq numberTim Chen
During RCU walk in path_lookupat and path_openat, the rcu lookup frequently failed if looking up an absolute path, because when root directory was looked up, seq number was not properly set in nameidata. We dropped out of RCU walk in nameidata_drop_rcu due to mismatch in directory entry's seq number. We reverted to slow path walk that need to take references. With the following patch, I saw a 50% increase in an exim mail server benchmark throughput on a 4-socket Nehalem-EX system. Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: stable@kernel.org (v2.6.38) Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-15net/9p: nwname should be an unsigned intHarsh Prateek Bora
Signed-off-by: Harsh Prateek Bora <harsh@linux.vnet.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric VAn Hensbergen <ericvh@gmail.com>
2011-04-159p: Fix sparse errorAneesh Kumar K.V
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-04-15fs/9p: Fix error reported by coccicheckAneesh Kumar K.V
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-04-159p: revert tsyncfs related changesAneesh Kumar K.V
Now that we use write_inode to flush server cache related to fid, we don't need tsyncfs either fort dotl or dotu protocols. For dotu this helps to do a more efficient server flush. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-04-15fs/9p: Use write_inode for data sync on serverAneesh Kumar K.V
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-04-15fs/9p: Fix revalidate to return correct valueAneesh Kumar K.V
revalidate should return > 0 on success. Also return 0 on ENOENT to force do_revalidate to return NULL dentry; Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-04-15Btrfs: don't force chunk allocation in find_free_extentChris Mason
find_free_extent likes to allocate in contiguous clusters, which makes writeback faster, especially on SSD storage. As the FS fragments, these clusters become harder to find and we have to decide between allocating a new chunk to make more clusters or giving up on the cluster to allocate from the free space we have. Right now it creates too many chunks, and you can end up with a whole FS that is mostly empty metadata chunks. This commit changes the allocation code to be more strict and only allocate new chunks when we've made good use of the chunks we already have. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-04-15x86, NUMA: Fix fakenuma boot failureKOSAKI Motohiro
Currently, numa=fake boot parameter is broken. If it's used, kernel may panic due to devide by zero error depending on CPU configuration Call Trace: [<ffffffff8104ad4c>] find_busiest_group+0x38c/0xd30 [<ffffffff81086aff>] ? local_clock+0x6f/0x80 [<ffffffff81050533>] load_balance+0xa3/0x600 [<ffffffff81050f53>] idle_balance+0xf3/0x180 [<ffffffff81550092>] schedule+0x722/0x7d0 [<ffffffff81550538>] ? wait_for_common+0x128/0x190 [<ffffffff81550a65>] schedule_timeout+0x265/0x320 [<ffffffff81095815>] ? lock_release_holdtime+0x35/0x1a0 [<ffffffff81550538>] ? wait_for_common+0x128/0x190 [<ffffffff8109bb6c>] ? __lock_release+0x9c/0x1d0 [<ffffffff815534e0>] ? _raw_spin_unlock_irq+0x30/0x40 [<ffffffff815534e0>] ? _raw_spin_unlock_irq+0x30/0x40 [<ffffffff81550540>] wait_for_common+0x130/0x190 [<ffffffff81051920>] ? try_to_wake_up+0x510/0x510 [<ffffffff8155067d>] wait_for_completion+0x1d/0x20 [<ffffffff8107f36c>] kthread_create_on_node+0xac/0x150 [<ffffffff81077bb0>] ? process_scheduled_works+0x40/0x40 [<ffffffff8155045f>] ? wait_for_common+0x4f/0x190 [<ffffffff8107a283>] __alloc_workqueue_key+0x1a3/0x590 [<ffffffff81e0cce2>] cpuset_init_smp+0x6b/0x7b [<ffffffff81df3d07>] kernel_init+0xc3/0x182 [<ffffffff8155d5e4>] kernel_thread_helper+0x4/0x10 [<ffffffff81553cd4>] ? retint_restore_args+0x13/0x13 [<ffffffff81df3c44>] ? start_kernel+0x400/0x400 [<ffffffff8155d5e0>] ? gs_change+0x13/0x13 The divede by zero is caused by the following line, group->cpu_power==0: kernel/sched_fair.c::update_sg_lb_stats() /* Adjust by relative CPU power of the group */ sgs->avg_load = (sgs->group_load * SCHED_LOAD_SCALE) / group->cpu_power; This regression was caused by commit e23bba6044 ("x86-64, NUMA: Unify emulated distance mapping") because it changes cpu -> node mapping in the process of dropping fake_physnodes(). old) all cpus are assinged node 0 now) cpus are assigned round robin (the logic is implemented by numa_init_array()) Note: The change in behavior only happens if the system doesn't have neither ACPI SRAT table nor AMD northbridge NUMA information. Round robin assignment doesn't work because init_numa_sched_groups_power() assumes all logical cpus in the same physical cpu share the same node (then it only accounts for group_first_cpu()), and the simple round robin breaks the above assumption. Thus, this patch implements a reassignment of node-ids if buggy firmware or numa emulation makes wrong cpu node map. Tt enforce all logical cpus in the same physical cpu share the same node. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Tejun Heo <tj@kernel.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Brian Gerst <brgerst@gmail.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Shaohui Zheng <shaohui.zheng@intel.com> Cc: David Rientjes <rientjes@google.com> Cc: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/20110415203928.1303.A69D9226@jp.fujitsu.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-04-15perf evsel: Fix use of inheritArnaldo Carvalho de Melo
perf stat doesn't mmap and its perfectly fine for it to use task-bound counters with inheritance. So set the attr.inherit on the caller and leave the syscall itself to validate it. When the mmap fails perf_evlist__mmap will just emit a warning if this is the failure reason. Reported-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Link: http://lkml.kernel.org/r/20110414170121.GC3229@ghostprotocols.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2011-04-15perf hists browser: Fix seg fault when annotate null symbolLin Ming
In hists browser, press hotkey 'a' to annotate current symbol. Now it causes segment fault if 'a' is pressed on a null symbol. Here are 2 small bugs: - In perf_evsel__hists_browse, the condition check after 'a' is pressed is not correct, we should check ->sym instead of ->map. - In symbol__tui_annotate we must check whether sym is NULL or not before getting annotation structure. This patch fixes above 2 small bugs. Link: http://lkml.kernel.org/r/1302244286.4106.36.camel@minggr.sh.intel.com Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2011-04-15Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: only force kblockd unplugging from the schedule() path block: cleanup the block plug helper functions block, blk-sysfs: Use the variable directly instead of a function call block: move queue run on unplug to kblockd block: kill queue_sync_plugs() block: readd plug trace event block: add callback function for unplug notification block: add comment on why we save and disable interrupts in flush_plug_list() block: fixup block IO unplug trace call block: remove block_unplug_timer() trace point block: splice plug list to local context
2011-04-15Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6Linus Torvalds
* 'linux-next' of git://git.infradead.org/ubifs-2.6: UBIFS: fix compilation warnings when compiling with gcc 4.5 UBIFS: fix oops when R/O file-system is fsync'ed
2011-04-15futex: Set FLAGS_HAS_TIMEOUT during futex_wait restart setupDarren Hart
The FLAGS_HAS_TIMEOUT flag was not getting set, causing the restart_block to restart futex_wait() without a timeout after a signal. Commit b41277dc7a18ee332d in 2.6.38 introduced the regression by accidentally removing the the FLAGS_HAS_TIMEOUT assignment from futex_wait() during the setup of the restart block. Restore the originaly behavior. Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=32922 Reported-by: Tim Smith <tsmith201104@yahoo.com> Reported-by: Torsten Hilbrich <torsten.hilbrich@secunet.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: John Kacur <jkacur@redhat.com> Cc: stable@kernel.org Link: http://lkml.kernel.org/r/%3Cdaac0eb3af607f72b9a4d3126b2ba8fb5ed3b883.1302820917.git.dvhart%40linux.intel.com%3E Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-04-15vfs: fix incorrect dentry_update_name_case() BUG_ON() testLinus Torvalds
The case we should be verifying when updating the dentry name is that the _parent_ inode (the directory) semaphore is held, not the semaphore for the dentry itself. It's the directory locking that rename and readdir() etc all care about. The comment just above even says so - but then the BUG_ON() still checked the dentry inode itself. Very few people noticed, because this helper function really isn't used for very much, so you had to be using ncpfs to ever hit it. I think I should just remove the BUG_ON (the function really has just one user), but let's run with it fixed for a while before getting rid of it entirely. Reported-and-tested-by: Bongani Hlope <bonganih@bankservafrica.com> Reported-and-tested-by: Bernd Feige <bernd.feige@uniklinik-freiburg.de> Cc: Petr Vandrovec <petr@vandrovec.name>, Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Nick Piggin <npiggin@kernel.dk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-15block: only force kblockd unplugging from the schedule() pathJens Axboe
For the explicit unplugging, we'd prefer to kick things off immediately and not pay the penalty of the latency to switch to kblockd. So let blk_finish_plug() do the run inline, while the implicit-on-schedule-out unplug will punt to kblockd. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-04-15block: cleanup the block plug helper functionsChristoph Hellwig
It's a bit of a mess currently. task->plug is being cleared and reset in __blk_finish_plug(), and blk_finish_plug() is testing for a NULL plug which cannot happen even from schedule() anymore since it uses blk_needs_flush_plug() to determine whether to call into this function at all. So get rid of some of the cruft. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-04-15ARM: Add new syscallsRussell King
Add syscalls for name_to_handle_at, open_by_handle_at, clock_adjtime and syncfs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-04-14ip: ip_options_compile() resilient to NULL skb routeEric Dumazet
Scot Doyle demonstrated ip_options_compile() could be called with an skb without an attached route, using a setup involving a bridge, netfilter, and forged IP packets. Let's make ip_options_compile() and ip_options_rcv_srr() a bit more robust, instead of changing bridge/netfilter code. With help from Hiroaki SHIMODA. Reported-by: Scot Doyle <lkml@scotdoyle.com> Tested-by: Scot Doyle <lkml@scotdoyle.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-14Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: Blackfin: SMP: fix cache flush loop Blackfin: time-ts: ack gptimer sooner to avoid missing short ints Blackfin: gptimers: fix thinko when disabling timers Blackfin: SMP: make all barriers handle cache issues
2011-04-14Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: libceph: fix linger request requeueing
2011-04-15drm/radeon/kms: adjust evergreen display watermark setupAlex Deucher
This patch fixes two issues: - A disabled crtc does not use any lb, so return 0 for lb size. This makes the display priority calculation more exact. - Only use 1/2 and whole lb partitions. Using smaller partitions can cause underflow to one of the displays if you have multiple large displays on the same lb. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=34534 Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-04-14mm/thp: use conventional format for boolean attributesBen Hutchings
The conventional format for boolean attributes in sysfs is numeric ("0" or "1" followed by new-line). Any boolean attribute can then be read and written using a generic function. Using the strings "yes [no]", "[yes] no" (read), "yes" and "no" (write) will frustrate this. [akpm@linux-foundation.org: use kstrtoul()] [akpm@linux-foundation.org: test_bit() doesn't return 1/0, per Neil] Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Johannes Weiner <jweiner@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Hugh Dickins <hughd@google.com> Tested-by: David Rientjes <rientjes@google.com> Cc: NeilBrown <neilb@suse.de> Cc: <stable@kernel.org> [2.6.38.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-14ramfs: fix memleak on no-mmu archBob Liu
On no-mmu arch, there is a memleak during shmem test. The cause of this memleak is ramfs_nommu_expand_for_mapping() added page refcount to 2 which makes iput() can't free that pages. The simple test file is like this: int main(void) { int i; key_t k = ftok("/etc", 42); for ( i=0; i<100; ++i) { int id = shmget(k, 10000, 0644|IPC_CREAT); if (id == -1) { printf("shmget error\n"); } if(shmctl(id, IPC_RMID, NULL ) == -1) { printf("shm rm error\n"); return -1; } } printf("run ok...\n"); return 0; } And the result: root:/> free total used free shared buffers Mem: 60320 17912 42408 0 0 -/+ buffers: 17912 42408 root:/> shmem run ok... root:/> free total used free shared buffers Mem: 60320 19096 41224 0 0 -/+ buffers: 19096 41224 root:/> shmem run ok... root:/> free total used free shared buffers Mem: 60320 20296 40024 0 0 -/+ buffers: 20296 40024 ... After this patch the test result is:(no memleak anymore) root:/> free total used free shared buffers Mem: 60320 16668 43652 0 0 -/+ buffers: 16668 43652 root:/> shmem run ok... root:/> free total used free shared buffers Mem: 60320 16668 43652 0 0 -/+ buffers: 16668 43652 Signed-off-by: Bob Liu <lliubbo@gmail.com> Acked-by: Hugh Dickins <hughd@google.com> Signed-off-by: David Howells <dhowells@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-14um: disable CONFIG_CMPXCHG_LOCALRichard Weinberger
Commit 8a5ec0ba "Lockless (and preemptless) fastpaths for slub" makes use of this_cpu_cmpxchg_double() which needs this_cpu_cmpxchg16b_emu() on x86_64. Implementing cmpxchg16b emulation for UML would introduce too much complexity. So just disable it. Signed-off-by: Richard Weinberger <richard@nod.at> Reported-by: Sergei Trofimovich <slyich@gmail.com> Acked-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>