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2011-02-28fmvj18x_cs: add new idKen Kawasaki2-0/+2
fmvj18x_cs:add new id Toshiba lan&modem multifuction card (model name:IPC5010A) Signed-off-by: Ken Kawasaki <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-02-28p54usb: add Senao NUB-350 usbidChristian Lamparter1-0/+1
Reported-by: Mark Davis Cc: <[email protected]> Signed-off-by: Christian Lamparter <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-28ath9k_htc: Fix an endian issueSujith Manoharan1-4/+5
The stream length/tag fields have to be in little endian format. Fixing this makes the driver work on big-endian platforms. Cc: [email protected] Tested-by: [email protected] Signed-off-by: Sujith Manoharan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-28ALSA: HDA: Realtek: Fixup jack detection to input subsystemDavid Henningsson1-5/+2
This patch fixes an error in the jack detection reporting, causing the jack detection sometimes not to be reported correctly to the input subsystem. It should apply to several Realtek codecs. Cc: [email protected] Signed-off-by: David Henningsson <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2011-02-28x86: Use u32 instead of long to set reset vector back to 0Don Zickus1-1/+1
A customer of ours, complained that when setting the reset vector back to 0, it trashed other data and hung their box. They noticed when only 4 bytes were set to 0 instead of 8, everything worked correctly. Mathew pointed out: | | We're supposed to be resetting trampoline_phys_low and | trampoline_phys_high here, which are two 16-bit values. | Writing 64 bits is definitely going to overwrite space | that we're not supposed to be touching. | So limit the area modified to u32. Signed-off-by: Don Zickus <[email protected]> Acked-by: Matthew Garrett <[email protected]> Cc: <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2011-02-28perf timechart: Fix max number of cpusThomas Renninger1-3/+3
Currently numcpus is determined in pid_put_sample which is only called on sched_switch/sched_wakeup sample processing. On a machine with a lot cpus I often saw the last cpu missing. Check for (max) numcpus on every event happening and in the beginning. -> fixes the issue for me. Signed-off-by: Thomas Renninger <[email protected]> Cc: Arjan van de Ven <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: [email protected] LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2011-02-28perf timechart: Fix black idle boxes in the titleThomas Renninger1-3/+3
This fix is needed for eye of gnome and firefox svg viewers. Only Inkscape can handle the broken case. Compare with the other svg_legenda_box declarations, looks like a typo slipped in at this place. Signed-off-by: Thomas Renninger <[email protected]> Cc: Arjan van de Ven <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: [email protected] LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2011-02-28Merge remote branch 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next ↵Dave Airlie1-1/+4
into drm-fixes * 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next: drm/nv50-nvc0: make sure vma is definitely unmapped when destroying bo
2011-02-28drm: fix unsigned vs signed comparison issue in modeset ctl ioctl.Dave Airlie2-2/+3
This fixes CVE-2011-1013. Reported-by: Matthiew Herrb (OpenBSD X.org team) Cc: [email protected] Signed-off-by: Dave Airlie <[email protected]>
2011-02-28drm/nv50-nvc0: make sure vma is definitely unmapped when destroying boBen Skeggs1-1/+4
Somehow fixes a misrendering + hang at GDM startup on my NVA8... My first guess would have been stale TLB entries laying around that a new bo then accidentally inherits. That doesn't make a great deal of sense however, as when we mapped the pages for the new bo the TLBs would've gotten flushed anyway. Signed-off-by: Ben Skeggs <[email protected]>
2011-02-27bnx2x: Add a missing bit for PXP parity register of 57712.Vladislav Zolotarov1-1/+1
Signed-off-by: Vladislav Zolotarov <[email protected]> Signed-off-by: Eilon Greenstein <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-02-27Merge branch 'fix' of ↵Russell King58-775/+728
git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into fixes
2011-02-27ARM: pxa/tosa: register wm9712 codec deviceDmitry Eremin-Solenikov1-0/+6
Since f0fba2ad1b it's required to register platform devices even for AC'97 codecs. Register one on tosa (wm9712-codec). Signed-off-by: Dmitry Eremin-Solenikov <[email protected]> Cc: Eric Miao <[email protected]> Signed-off-by: Eric Miao <[email protected]>
2011-02-27ARM: pxa: enable pxa-pcm-audio on pxa210/pxa25x platformDmitry Eremin-Solenikov1-0/+1
pxa25x platforms were left out of major ASoC Update patch. Since f0fba2ad1b a registration of pxa-pcm-audio device is required for ASoC to function on pxa platforms. Register one also for pxa210/pxa25x. Signed-off-by: Dmitry Eremin-Solenikov <[email protected]> Cc: Eric Miao <[email protected]> Signed-off-by: Eric Miao <[email protected]>
2011-02-27ARM: pxa/colibri: don't register pxa2xx-pcmcia nodes on non-colibri platformsDmitry Eremin-Solenikov1-0/+3
PXA supports multi-machine kernels since long ago. However a kernel compiled with support for colibri and any other PXA machine and with PCMCIA enabled will barf at runtime about duplicate registration of pxa2xx-pcmcia device. Fix that. Signed-off-by: Dmitry Eremin-Solenikov <[email protected]> Signed-off-by: Eric Miao <[email protected]>
2011-02-27ARM: pxa/tosa: drop setting LED trigger name, as it's unsupported nowDmitry Eremin-Solenikov1-2/+0
Since 2e48928d8a0f38c1b5c81eb3f1294de8a6382c68 it's no longer possible to set the name of the LED trigger for RFKILL events. Drop respective code from tosa-bt.c Signed-off-by: Dmitry Eremin-Solenikov <[email protected]> Cc: Stephen Hemminger <[email protected]> Cc: John W. Linville <[email protected]> Signed-off-by: Eric Miao <[email protected]>
2011-02-26dccp: Change maintainerArnaldo Carvalho de Melo1-1/+1
Today was as good as any other day, but I felt I had to do things I love to when paying hommage to somebody I love, so please apply this one, something he would be proud of, even if so geekly. Way past it was/is deserved. Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-02-26hwmon: (adt7411) add MODULE_DEVICE_TABLEaxel lin1-0/+1
The device table is required to load modules based on modaliases. Signed-off-by: Axel Lin <[email protected]> Acked-by: Wolfram Sang <[email protected]> Signed-off-by: Guenter Roeck <[email protected]>
2011-02-26hwmon: (ad7414) add MODULE_DEVICE_TABLEaxel lin1-0/+1
The device table is required to load modules based on modaliases. Signed-off-by: Axel Lin <[email protected]> Signed-off-by: Guenter Roeck <[email protected]>
2011-02-26ARM: 6762/1: Update number of VIC for S5P6442 and S5PC100Kukjin Kim1-0/+1
The S5P6442 and S5PC100 SoCs have 4 VICs. However, default VIC number is defined 2 in arch/arm/common. So can be happened some problem on it. Basically, it requires for suspend and resume. Signed-off-by: Kukjin Kim <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-02-26ARM: 6761/1: Update number of VIC for S5PV210Kukjin Kim1-0/+1
The S5PV210 SoC have 4 VICs. It requires for suspend and resume. Signed-off-by: Kyungmin Park <[email protected]> Signed-off-by: Kukjin Kim <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-02-26ARM: 6768/1: hw_breakpoint: ensure debug logic is powered up on v7 coresWill Deacon1-3/+23
ARMv7 allows the debug core logic to be powered down and provides the DBGPRSR register so that software can power-up and check the status of the logic. This patch ensures that the debug logic is powered up on ARMv7 cores before we attempt to access the extended debug registers. Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-02-26ARM: 6767/1: ptrace: fix register indexing in GETHBPREGS requestWill Deacon1-3/+3
The GETHBPREGS ptrace request incorrectly maps its index argument onto the thread's saved debug state when the index != 0. This has not yet been seen from userspace because GDB (the only user of this request) only reads from register 0. This patch fixes the indexing. Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-02-26ARM: 6765/1: remove obsolete comment from asm/mach/arch.hNicolas Pitre1-4/+0
Since commit 6fc31d54 this comment is no longer true. Signed-off-by: Nicolas Pitre <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-02-26Merge branch 'fix/asoc' into for-linusTakashi Iwai16-45/+233
2011-02-26clockevents: Prevent oneshot mode when broadcast device is periodicThomas Gleixner3-1/+18
When the per cpu timer is marked CLOCK_EVT_FEAT_C3STOP, then we only can switch into oneshot mode, when the backup broadcast device supports oneshot mode as well. Otherwise we would try to switch the broadcast device into an unsupported mode unconditionally. This went unnoticed so far as the current available broadcast devices support oneshot mode. Seth unearthed this problem while debugging and working around an hpet related BIOS wreckage. Add the necessary check to tick_is_oneshot_available(). Reported-and-tested-by: Seth Forshee <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> LKML-Reference: <[email protected]> Cc: [email protected] # .21 ->
2011-02-25Merge branch 'pm-fixes' of ↵Linus Torvalds2-11/+16
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 * 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM: Make ACPI wakeup from S5 work again when CONFIG_PM_SLEEP is unset
2011-02-25rapidio: fix sysfs config attribute to access 16MB of maint spaceAlexandre Bounine2-7/+9
Fixes sysfs config attribute to allow access to entire 16MB maintenance space of RapidIO devices. Signed-off-by: Alexandre Bounine <[email protected]> Cc: Kumar Gala <[email protected]> Cc: Matt Porter <[email protected]> Cc: Li Yang <[email protected]> Cc: Thomas Moll <[email protected]> Cc: Micha Nelissen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25pps: initialize ts_real properlyAlexander Gordeev1-1/+1
Initialize ts_real.flags to fix compiler warning about possible uninitialized use of this field. Signed-off-by: Alexander Gordeev <[email protected]> Cc: john stultz <[email protected]> Cc: Rodolfo Giometti <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25memcg: more mem_cgroup_uncharge() batchingHugh Dickins1-0/+2
It seems odd that truncate_inode_pages_range(), called not only when truncating but also when evicting inodes, has mem_cgroup_uncharge_start and _end() batching in its second loop to clear up a few leftovers, but not in its first loop that does almost all the work: add them there too. Signed-off-by: Hugh Dickins <[email protected]> Acked-by: KAMEZAWA Hiroyuki <[email protected]> Acked-by: Balbir Singh <[email protected]> Acked-by: Daisuke Nishimura <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25thp: fix interleaving for transparent hugepagesAndi Kleen1-1/+1
The THP code didn't pass the correct interleaving shift to the memory policy code. Fix this here by adjusting for the order. Signed-off-by: Andi Kleen <[email protected]> Reviewed-by: Christoph Lameter <[email protected]> Acked-by: Andrea Arcangeli <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25aio: fix race between io_destroy() and io_submit()Jan Kara1-0/+17
A race can occur when io_submit() races with io_destroy(): CPU1 CPU2 io_submit() do_io_submit() ... ctx = lookup_ioctx(ctx_id); io_destroy() Now do_io_submit() holds the last reference to ctx. ... queue new AIO put_ioctx(ctx) - frees ctx with active AIOs We solve this issue by checking whether ctx is being destroyed in AIO submission path after adding new AIO to ctx. Then we are guaranteed that either io_destroy() waits for new AIO or we see that ctx is being destroyed and bail out. Cc: Nick Piggin <[email protected]> Reviewed-by: Jeff Moyer <[email protected]> Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25aio: fix rcu ioctx lookupNick Piggin1-11/+24
aio-dio-invalidate-failure GPFs in aio_put_req from io_submit. lookup_ioctx doesn't implement the rcu lookup pattern properly. rcu_read_lock does not prevent refcount going to zero, so we might take a refcount on a zero count ioctx. Fix the bug by atomically testing for zero refcount before incrementing. [[email protected]: added comment into the code] Reviewed-by: Jeff Moyer <[email protected]> Signed-off-by: Nick Piggin <[email protected]> Signed-off-by: Jan Kara <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25mm: fix dubious code in __count_immobile_pages()Namhyung Kim1-3/+2
When pfn_valid_within() failed 'iter' was incremented twice. Signed-off-by: Namhyung Kim <[email protected]> Reviewed-by: KAMEZAWA Hiroyuki <[email protected]> Reviewed-by: Minchan Kim <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25drivers/rtc/rtc-ds3232.c: fix time range difference between linux and RTC chipLei Xu1-5/+9
In linux rtc_time struct, tm_mon range is 0~11, tm_wday range is 0~6, while in RTC HW REG, month range is 1~12, day of the week range is 1~7, this patch adjusts difference of them. The efect of this bug was that most of month will be operated on as the next month by the hardware (When in Jan it maybe even worse). For example, if in May, software wrote 4 to the hardware, which handled it as April. Then the logic would be different between software and hardware, which would cause weird things to happen. Signed-off-by: Lei Xu <[email protected]> Cc: Alessandro Zummo <[email protected]> Cc: john stultz <[email protected]> Cc: Jack Lan <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25ldm: corrupted partition table can cause kernel oopsTimo Warns1-0/+5
The kernel automatically evaluates partition tables of storage devices. The code for evaluating LDM partitions (in fs/partitions/ldm.c) contains a bug that causes a kernel oops on certain corrupted LDM partitions. A kernel subsystem seems to crash, because, after the oops, the kernel no longer recognizes newly connected storage devices. The patch changes ldm_parse_vmdb() to Validate the value of vblk_size. Signed-off-by: Timo Warns <[email protected]> Cc: Eugene Teo <[email protected]> Acked-by: Richard Russon <[email protected]> Cc: Harvey Harrison <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25mm: vmscan: stop reclaim/compaction earlier due to insufficient progress if ↵Mel Gorman1-10/+22
!__GFP_REPEAT should_continue_reclaim() for reclaim/compaction allows scanning to continue even if pages are not being reclaimed until the full list is scanned. In terms of allocation success, this makes sense but potentially it introduces unwanted latency for high-order allocations such as transparent hugepages and network jumbo frames that would prefer to fail the allocation attempt and fallback to order-0 pages. Worse, there is a potential that the full LRU scan will clear all the young bits, distort page aging information and potentially push pages into swap that would have otherwise remained resident. This patch will stop reclaim/compaction if no pages were reclaimed in the last SWAP_CLUSTER_MAX pages that were considered. For allocations such as hugetlbfs that use __GFP_REPEAT and have fewer fallback options, the full LRU list may still be scanned. Order-0 allocation should not be affected because RECLAIM_MODE_COMPACTION is not set so the following avoids the gfp_mask being examined: if (!(sc->reclaim_mode & RECLAIM_MODE_COMPACTION)) return false; A tool was developed based on ftrace that tracked the latency of high-order allocations while transparent hugepage support was enabled and three benchmarks were run. The "fix-infinite" figures are 2.6.38-rc4 with Johannes's patch "vmscan: fix zone shrinking exit when scan work is done" applied. STREAM Highorder Allocation Latency Statistics fix-infinite break-early 1 :: Count 10298 10229 1 :: Min 0.4560 0.4640 1 :: Mean 1.0589 1.0183 1 :: Max 14.5990 11.7510 1 :: Stddev 0.5208 0.4719 2 :: Count 2 1 2 :: Min 1.8610 3.7240 2 :: Mean 3.4325 3.7240 2 :: Max 5.0040 3.7240 2 :: Stddev 1.5715 0.0000 9 :: Count 111696 111694 9 :: Min 0.5230 0.4110 9 :: Mean 10.5831 10.5718 9 :: Max 38.4480 43.2900 9 :: Stddev 1.1147 1.1325 Mean time for order-1 allocations is reduced. order-2 looks increased but with so few allocations, it's not particularly significant. THP mean allocation latency is also reduced. That said, allocation time varies so significantly that the reductions are within noise. Max allocation time is reduced by a significant amount for low-order allocations but reduced for THP allocations which presumably are now breaking before reclaim has done enough work. SysBench Highorder Allocation Latency Statistics fix-infinite break-early 1 :: Count 15745 15677 1 :: Min 0.4250 0.4550 1 :: Mean 1.1023 1.0810 1 :: Max 14.4590 10.8220 1 :: Stddev 0.5117 0.5100 2 :: Count 1 1 2 :: Min 3.0040 2.1530 2 :: Mean 3.0040 2.1530 2 :: Max 3.0040 2.1530 2 :: Stddev 0.0000 0.0000 9 :: Count 2017 1931 9 :: Min 0.4980 0.7480 9 :: Mean 10.4717 10.3840 9 :: Max 24.9460 26.2500 9 :: Stddev 1.1726 1.1966 Again, mean time for order-1 allocations is reduced while order-2 allocations are too few to draw conclusions from. The mean time for THP allocations is also slightly reduced albeit the reductions are within varianes. Once again, our maximum allocation time is significantly reduced for low-order allocations and slightly increased for THP allocations. Anon stream mmap reference Highorder Allocation Latency Statistics 1 :: Count 1376 1790 1 :: Min 0.4940 0.5010 1 :: Mean 1.0289 0.9732 1 :: Max 6.2670 4.2540 1 :: Stddev 0.4142 0.2785 2 :: Count 1 - 2 :: Min 1.9060 - 2 :: Mean 1.9060 - 2 :: Max 1.9060 - 2 :: Stddev 0.0000 - 9 :: Count 11266 11257 9 :: Min 0.4990 0.4940 9 :: Mean 27250.4669 24256.1919 9 :: Max 11439211.0000 6008885.0000 9 :: Stddev 226427.4624 186298.1430 This benchmark creates one thread per CPU which references an amount of anonymous memory 1.5 times the size of physical RAM. This pounds swap quite heavily and is intended to exercise THP a bit. Mean allocation time for order-1 is reduced as before. It's also reduced for THP allocations but the variations here are pretty massive due to swap. As before, maximum allocation times are significantly reduced. Overall, the patch reduces the mean and maximum allocation latencies for the smaller high-order allocations. This was with Slab configured so it would be expected to be more significant with Slub which uses these size allocations more aggressively. The mean allocation times for THP allocations are also slightly reduced. The maximum latency was slightly increased as predicted by the comments due to reclaim/compaction breaking early. However, workloads care more about the latency of lower-order allocations than THP so it's an acceptable trade-off. Signed-off-by: Mel Gorman <[email protected]> Acked-by: Andrea Arcangeli <[email protected]> Acked-by: Johannes Weiner <[email protected]> Reviewed-by: Minchan Kim <[email protected]> Acked-by: Andrea Arcangeli <[email protected]> Acked-by: Rik van Riel <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Kent Overstreet <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25drivers/nfc/pn544.c: add missing regulatorMatti J. Aaltonen1-1/+3
The regulator framework is used for power management. The regulators are only named in the driver code, the actual control stuff is in the board file for each architecture or use case. The PN544 chip has three regulators that can be controlled or not - depending on the architecture where the chip is being used. So some of the regulators may not be controllable. In our current case the third regulator, which was missing from the code, went unnoticed because we didn't need to control it. To be as general as possible - in this respect - the driver needs to list all regulators. Then the board file can be used to actually set the usage. Signed-off-by: Matti J. Aaltonen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25drivers/nfc/Kconfig: use full form of the NFC acronymMatti J. Aaltonen1-1/+1
Spell out the NFC acronym when it's shown for the first time. Signed-off-by: Matti J. Aaltonen <[email protected]> Acked-by: Wolfram Sang <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25swiotlb: fix wrong panicFUJITA Tomonori1-2/+4
swiotlb's map_page wrongly calls panic() when it can't find a buffer fit for device's dma mask. It should return an error instead. Devices with an odd dma mask (i.e. under 4G) like b44 network card hit this bug (the system crashes): http://marc.info/?l=linux-kernel&m=129648943830106&w=2 If swiotlb returns an error, b44 driver can use the own bouncing mechanism. Reported-by: Chuck Ebbert <[email protected]> Signed-off-by: FUJITA Tomonori <[email protected]> Tested-by: Arkadiusz Miskiewicz <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25MAINTAINERS: add Chinese documentation maintainerHarry Wei1-0/+7
I have translated some kernel documentation so I wish to maintain the Chinese documentation in our kernel directories. Signed-off-by: Harry Wei <[email protected]> Cc: Joe Perches <[email protected]> Cc: Greg KH <[email protected]> Cc: Randy Dunlap <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25mm: grab rcu read lock in move_pages()Greg Thelen1-3/+3
The move_pages() usage of find_task_by_vpid() requires rcu_read_lock() to prevent free_pid() from reclaiming the pid. Without this patch, RCU warnings are printed in v2.6.38-rc4 move_pages() with: CONFIG_LOCKUP_DETECTOR=y CONFIG_PREEMPT=y CONFIG_LOCKDEP=y CONFIG_PROVE_LOCKING=y CONFIG_PROVE_RCU=y Previously, migrate_pages() went through a similar transformation replacing usage of tasklist_lock with rcu read lock: commit 55cfaa3cbdd29c4919ecb5fb8965c310f357e48c Author: Zeng Zhaoming <[email protected]> Date: Thu Dec 2 14:31:13 2010 -0800 mm/mempolicy.c: add rcu read lock to protect pid structure commit 1e50df39f6e2c3a4a3394df62baa8a213df16c54 Author: KOSAKI Motohiro <[email protected]> Date: Thu Jan 13 15:46:14 2011 -0800 mempolicy: remove tasklist_lock from migrate_pages Signed-off-by: Greg Thelen <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Minchan Kim <[email protected]> Cc: Rik van Riel <[email protected]> Cc: KAMEZAWA Hiroyuki <[email protected]> Cc: "Paul E. McKenney" <[email protected]> Cc: Tetsuo Handa <[email protected]> Cc: Sergey Senozhatsky <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Zeng Zhaoming <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25epoll: prevent creating circular epoll structuresDavide Libenzi1-0/+95
In several places, an epoll fd can call another file's ->f_op->poll() method with ep->mtx held. This is in general unsafe, because that other file could itself be an epoll fd that contains the original epoll fd. The code defends against this possibility in its own ->poll() method using ep_call_nested, but there are several other unsafe calls to ->poll elsewhere that can be made to deadlock. For example, the following simple program causes the call in ep_insert recursively call the original fd's ->poll, leading to deadlock: #include <unistd.h> #include <sys/epoll.h> int main(void) { int e1, e2, p[2]; struct epoll_event evt = { .events = EPOLLIN }; e1 = epoll_create(1); e2 = epoll_create(2); pipe(p); epoll_ctl(e2, EPOLL_CTL_ADD, e1, &evt); epoll_ctl(e1, EPOLL_CTL_ADD, p[0], &evt); write(p[1], p, sizeof p); epoll_ctl(e1, EPOLL_CTL_ADD, e2, &evt); return 0; } On insertion, check whether the inserted file is itself a struct epoll, and if so, do a recursive walk to detect whether inserting this file would create a loop of epoll structures, which could lead to deadlock. [[email protected]: Use epmutex to serialize concurrent inserts] Signed-off-by: Davide Libenzi <[email protected]> Signed-off-by: Nelson Elhage <[email protected]> Reported-by: Nelson Elhage <[email protected]> Tested-by: Nelson Elhage <[email protected]> Cc: <[email protected]> [2.6.34+, possibly earlier] Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25Merge branch 'for-linus' of ↵Linus Torvalds2-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6: regulator, mc13xxx: Remove pointless test for unsigned less than zero regulator: Fix warning with CONFIG_BUG disabled
2011-02-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds10-57/+282
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: fix fiemap bugs with delalloc Btrfs: set FMODE_EXCL in btrfs_device->mode Btrfs: make btrfs_rm_device() fail gracefully Btrfs: Avoid accessing unmapped kernel address Btrfs: Fix BTRFS_IOC_SUBVOL_SETFLAGS ioctl Btrfs: allow balance to explicitly allocate chunks as it relocates Btrfs: put ENOSPC debugging under a mount option
2011-02-25Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds5-14/+27
git://git.kernel.org/pub/scm/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 quirk: Fix polarity for IRQ0 pin2 override on SB800 systems x86/mrst: Fix apb timer rating when lapic timer is used x86: Fix reboot problem on VersaLogic Menlow boards
2011-02-25RTC: fix typo in drivers/rtc/rtc-at91sam9.cJelle Martijn Kok1-1/+1
The member of the rtc_class_ops struct is called alarm_irq_enable and not alarm_irq_enabled CC: Thomas Gleixner <[email protected]> Signed-off-by: Jelle Martijn Kok <[email protected]> Signed-off-by: John Stultz <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25net: handle addr_type of 0 properlyHagen Paul Pfeifer1-1/+1
addr_type of 0 means that the type should be adopted from from_dev and not from __hw_addr_del_multiple(). Unfortunately it isn't so and addr_type will always be considered. Fix this by implementing the considered and documented behavior. Signed-off-by: Hagen Paul Pfeifer <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-02-25Merge branch 'patches_for_2.6.38rc' of git://git.pwsan.com/linux-2.6 into ↵Tony Lindgren974-8137/+12677
devel-fixes
2011-02-25rndis_wlan: use power save only for BCM4320bJussi Kivilinna1-0/+3
BCM4320a breaks when enabling power save (bug 29732). So disable power save for anything but BCM4320b that is known to work. Signed-off-by: Jussi Kivilinna <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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