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2009-03-31md/raid5: simplify raid5_compute_sector interfaceNeilBrown
Rather than passing 'pd_idx' and 'qd_idx' to be filled in, pass a 'struct stripe_head *' and fill in the relevant fields. This is more extensible. Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md/raid6: remove expectation that Q device is immediately after P device.NeilBrown
Code currently assumes that the devices in a raid6 stripe are 0 1 ... N-1 P Q in some rotated order. We will shortly add new layouts in which this strict pattern is broken. So remove this expectation. We still assume that the data disks are roughly in-order. However P and Q can be inserted anywhere within that order. Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md/raid5: change raid5_compute_sector and stripe_to_pdidx to take a ↵NeilBrown
'previous' argument This similar to the recent change to get_active_stripe. There is no functional change, just come rearrangement to make future patches cleaner. Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md/raid5: simplify interface for init_stripe and get_active_stripeNeilBrown
Rather than passing 'pd_idx' and 'disks' to these functions, just pass 'previous' which tells whether to use the 'previous' or 'current' geometry during a reshape, and let init_stripe calculate disks and pd_idx and anything else it might need. This is not a substantial simplification and even adds a division. However we will shortly be adding more complexity to init_stripe to handle more interesting 'reshape' activities, and without this change, the interface to these functions would get very complex. Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md: Represent raid device size in sectors.Andre Noll
This patch renames the "size" field of struct mdk_rdev_s to "sectors" and changes this field to store sectors instead of blocks. All users of this field, linear.c, raid0.c and md.c, are fixed up accordingly which gets rid of many multiplications and divisions. Signed-off-by: Andre Noll <maan@systemlinux.org> Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md: Make mddev->size sector-based.Andre Noll
This patch renames the "size" field of struct mddev_s to "dev_sectors" and stores the number of 512-byte sectors instead of the number of 1K-blocks in it. All users of that field, including raid levels 1,4-6,10, are adjusted accordingly. This simplifies the code a bit because it allows to get rid of a couple of divisions/multiplications by two. In order to make checkpatch happy, some minor coding style issues have also been addressed. In particular, size_store() now uses strict_strtoull() instead of simple_strtoull(). Signed-off-by: Andre Noll <maan@systemlinux.org> Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md: be more consistent about setting WriteMostly flag when adding a drive to ↵NeilBrown
an array When a drive is added to an array using ADD_NEW_DISK, there are two places we can get certain flags from: the metadata on the disk or the flags passed through the IOCTL. For the WriteMostly flag (aka MD_DISK_WRITEMOSTLY) we take the value from either of those sources depending on if it is set (i.e. we effectively 'or' the two sources together). This makes it awkward to clear, and is at best inconsistent. As documented code (in mdadm) requires that setting MD_DISK_WRITEMOSTLY in the ioctl will be effective, we resolve the inconsistency by always using the value for this flag from the ioctl, and ignoring the value on disk. Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md: occasionally checkpoint drive recovery to reduce duplicate effort after ↵NeilBrown
a crash Version 1.x metadata has the ability to record the status of a partially completed drive recovery. However we only update that record on a clean shutdown. It would be nice to update it on unclean shutdowns too, particularly when using a bitmap that removes much to the 'sync' effort after an unclean shutdown. One complication with checkpointing recovery is that we only know where we are up to in terms of IO requests started, not which ones have completed. And we need to know what has completed to record how much is recovered. So occasionally pause the recovery until all submitted requests are completed, then update the record of where we are up to. When we have a bitmap, we already do that pause occasionally to keep the bitmap up-to-date. So enhance that code to record the recovery offset and schedule a superblock update. And when there is no bitmap, just pause 16 times during the resync to do a checkpoint. '16' is a fairly arbitrary number. But we don't really have any good way to judge how often is acceptable, and it seems like a reasonable number for now. Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md: move md_k.h from include/linux/raid/ to drivers/md/NeilBrown
It really is nicer to keep related code together.. Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md: move lots of #include lines out of .h files and into .cNeilBrown
This makes the includes more explicit, and is preparation for moving md_k.h to drivers/md/md.h Remove include/raid/md.h as its only remaining use was to #include other files. Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md: move most content from md.h to md_k.hNeilBrown
The extern function definitions are kernel-internal definitions, so they belong in md_k.h The MD_*_VERSION values could reasonably go in a number of places, but md_u.h seems most reasonable. This leaves almost nothing in md.h. It will go soon. Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md: move LEVEL_* definition from md_k.h to md_u.hNeilBrown
.. as they are part of the user-space interface. Also move MdpMinorShift into there so we can remove duplication. Lastly move mdp_major in. It is less obviously part of the user-space interface, but do_mounts_md.c uses it, and it is acting a bit like user-space. Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md: move headers out of include/linux/raid/Christoph Hellwig
Move the headers with the local structures for the disciplines and bitmap.h into drivers/md/ so that they are more easily grepable for hacking and not far away. md.h is left where it is for now as there are some uses from the outside. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31cleanup drivers/md/MakefileChristoph Hellwig
Use the -y variables instead of the old -objs so we can easily add conditional objects to the modules. Also always use += to add subobjects to avoid problems when placing additional objects in some place in the file. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md: stop defining MAJOR_NRChristoph Hellwig
MAJOR_NR was only required for magic in linux/blk.h in 2.4 or earlier kernels, so no need to keep it around. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31MD data integrity supportMartin K. Petersen
md: Add support for data integrity to MD If all subdevices support the same protection format the MD device is flagged as integrity capable. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md: write bitmap information to devices that are undergoing recovery.NeilBrown
When we add some spares to an array and start recovery, and we have a bitmap which is stored 'internally' on all devices, we call bitmap_write_all to make sure the bitmap is correct on the new device(s). However that doesn't work as write_sb_page only writes to 'In_sync' devices, and devices undergoing recovery are not 'In_sync' until recovery finishes. So extend write_sb_page (actually next_active_rdev) to include devices that are under recovery. Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md: never clear bit from the write-intent bitmap when the array is degraded.NeilBrown
It is safe to clear a bit from the write-intent bitmap for a raid1 if we know the data has been written to all devices, which is what the current test does. But it is not always safe to update the 'events_cleared' counter in that case. This is because one request could complete successfully after some other request has partially failed. So simply disable the clearing and updating of events_cleared whenever the array is degraded. This might end up not clearing some bits that could safely be cleared, but it is safest approach. Note that the bug fixed here did not risk corrupting data by letting the array get out-of-sync. Rather it meant that when a device is removed and re-added to the array, it might incorrectly require a full recovery rather than just recovering based on the bitmap. Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-31md: Allow write-intent bitmaps to have chunksize < PAGE_SIZENeilBrown
md currently insists that the chunk size used for write-intent bitmaps (the amount of data that corresponds to one chunk) be at least one page. The reason for this restriction is lost in the mists of time, but a review of the code (and a vague memory) suggests that the only problem would be related to resync. Resync tries very hard to work in multiples of a page, but also needs to sync with units of a bitmap_chunk too. This connection comes out in the bitmap_start_sync call. So change bitmap_start_sync to always work in multiples of a page. If the bitmap chunk size is less that one page, we flag multiple chunks as 'syncing' and generally make them all appear to the resync routines like one chunk. All other code either already works with data ranges that could span multiple chunks, or explicitly only cares about a single chunk. Signed-off-by: Neil Brown <neilb@suse.de>
2009-03-31md: Fix is_mddev_idle test (again).NeilBrown
There are two problems with is_mddev_idle. 1/ sync_io is 'atomic_t' and hence 'int'. curr_events and all the rest are 'long'. So if sync_io were to wrap on a 64bit host, the value of curr_events would go very negative suddenly, and take a very long time to return to positive. So do all calculations as 'int'. That gives us plenty of precision for what we need. 2/ To initialise rdev->last_events we simply call is_mddev_idle, on the assumption that it will make sure that last_events is in a suitable range. It used to do this, but now it does not. So now we need to be more explicit about initialisation. Signed-off-by: NeilBrown <neilb@suse.de>
2009-03-26dmaengine: Add privatecnt to revert DMA_PRIVATE propertyAtsushi Nemoto
Currently dma_request_channel() set DMA_PRIVATE capability but never clear it. So if a public channel was once grabbed by dma_request_channel(), the device stay PRIVATE forever. Add privatecnt member to dma_device to correctly revert it. [lg@denx.de: fix bad usage of 'chan' in dma_async_device_register] Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dmatest: add dma interrupts and callbacksDan Williams
Use the callback infrastructure to report driver/hardware hangs or missed interrupts. Since this makes the test threads much more aggressive (from: explicit 1ms sleep to: wait_for_completion) we set the nice value to 10 so as to not swamp legitimate tasks. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dmatest: add xor testDan Williams
Extend dmatest to launch a thread per supported operation type and add an xor test. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dmaengine: allow dma support for async_tx to be toggledDan Williams
Provide a config option for blocking the allocation of dma channels to the async_tx api. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25async_tx: provide __async_inline for HAS_DMA=n archsDan Williams
To allow an async_tx routine to be compiled away on HAS_DMA=n arch it needs to be declared __always_inline otherwise the compiler may emit code and cause a link error. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dmaengine: kill some unused headersDan Williams
The dmaengine redux left some unneeded headers in include/linux/dmaengine.h, clean them up. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dmaengine: initialize tx_list in dma_async_tx_descriptor_initDan Williams
Centralize this common initialization (and one case where ipu_idmac is duplicating ->chan initialization). Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dma: i.MX31 IPU DMA robustness improvementsGuennadi Liakhovetski
Add DMA error handling to the ISR, move common code fragments to functions, fix scatter-gather element queuing in the ISR, survive channel freeing and re-allocation in a quick succession. Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dma: improve section assignment in i.MX31 IPU DMA driverGuennadi Liakhovetski
The i.MX31 IPU DMA driver is a platform driver, but doesn't need hotplug, so we can use __init and __exit function attributes. Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dma: ipu_idmac driver cosmetic clean-upGuennadi Liakhovetski
Remove superfluous semicolons, update comments. Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dmaengine: fail device registration if channel registration failsDan Williams
Atsushi points out: "If alloc_percpu or kzalloc failed, chan_id does not match with its position in device->channels list. And above "continue" looks buggy anyway. Keeping incomplete channels in device->channels list looks very dangerous..." Also, fix up leakage of idr_ref in the idr_pre_get() and channel init fail cases. Reported-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-12Linus 2.6.29-rc8Linus Torvalds
2009-03-12bitmap: fix end condition in bitmap_find_free_regionLinus Torvalds
Guennadi Liakhovetski noticed that the end condition for the loop in bitmap_find_free_region() is wrong, and the "return if error" was also using the wrong conditional that would only trigger if the bitmap was an exact multiple of the allocation size, which is not necessarily the case with dma_alloc_from_coherent(). Such a failure would end up in bitmap_find_free_region() accessing beyond the end of the bitmap. Reported-by: Guennadi Liakhovetski <lg@denx.de> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: kbuild: remove unused -r option for module-init-tool depmod kbuild: fix 'make rpm' when CONFIG_LOCALVERSION_AUTO=y and using SCM tree kbuild: fix mkspec to cleanup RPM_BUILD_ROOT kbuild: fix C libary confusion in unifdef.c due to getline()
2009-03-12Merge 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: cpumask: mm_cpumask for accessing the struct mm_struct's cpu_vm_mask. cpumask: tsk_cpumask for accessing the struct task_struct's cpus_allowed.
2009-03-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linusLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus: Squashfs: Valid filesystems are flagged as bad by the corrupted fs patch
2009-03-12Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds
* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: hwmon: (f75375s) Remove unnecessary and confusing initialization hwmon: (it87) Properly decode -128 degrees C temperature hwmon: (lm90) Document support for the MAX6648/6692 chips hwmon: (abituguru3) Fix I/O error handling
2009-03-12trivial: fix bad links in the ext2 and ext3 documentationJody McIntyre
Trivial patch to fix bad links in the ext2 and ext3 documentation. Signed-off-by: Jody McIntyre <scjody@sun.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12Merge branch 'fixes-20090312' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/willy/pci * 'fixes-20090312' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/pci: PCIe: portdrv: call pci_disable_device during remove pci: Fix typo in message while disabling HT MSI mapping pci: don't disable too many HT MSI mapping powerpc/pseries: The RPA PCI hotplug driver depends on EEH PCIe: AER: during disable, check subordinate before walking PCI: Add PCI quirk to disable L0s ASPM state for 82575 and 82598
2009-03-12RDMA/nes: Don't allow userspace QPs to use STag zeroFaisal Latif
STag zero is a special STag that allows consumers to access any bus address without registering memory. The nes driver unfortunately allows STag zero to be used even with QPs created by unprivileged userspace consumers, which means that any process with direct verbs access to the nes device can read and write any memory accessible to the underlying PCI device (usually any memory in the system). Such access is usually given for cluster software such as MPI to use, so this is a local privilege escalation bug on most systems running this driver. The driver was using STag zero to receive the last streaming mode data; to allow STag zero to be disabled for unprivileged QPs, the driver now registers a special MR for this data. Cc: <stable@kernel.org> Signed-off-by: Faisal Latif <faisal.latif@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12fs: new inode i_state corruption fixNick Piggin
There was a report of a data corruption http://lkml.org/lkml/2008/11/14/121. There is a script included to reproduce the problem. During testing, I encountered a number of strange things with ext3, so I tried ext2 to attempt to reduce complexity of the problem. I found that fsstress would quickly hang in wait_on_inode, waiting for I_LOCK to be cleared, even though instrumentation showed that unlock_new_inode had already been called for that inode. This points to memory scribble, or synchronisation problme. i_state of I_NEW inodes is not protected by inode_lock because other processes are not supposed to touch them until I_LOCK (and I_NEW) is cleared. Adding WARN_ON(inode->i_state & I_NEW) to sites where we modify i_state revealed that generic_sync_sb_inodes is picking up new inodes from the inode lists and passing them to __writeback_single_inode without waiting for I_NEW. Subsequently modifying i_state causes corruption. In my case it would look like this: CPU0 CPU1 unlock_new_inode() __sync_single_inode() reg <- inode->i_state reg -> reg & ~(I_LOCK|I_NEW) reg <- inode->i_state reg -> inode->i_state reg -> reg | I_SYNC reg -> inode->i_state Non-atomic RMW on CPU1 overwrites CPU0 store and sets I_LOCK|I_NEW again. Fix for this is rather than wait for I_NEW inodes, just skip over them: inodes concurrently being created are not subject to data integrity operations, and should not significantly contribute to dirty memory either. After this change, I'm unable to reproduce any of the added warnings or hangs after ~1hour of running. Previously, the new warnings would start immediately and hang would happen in under 5 minutes. I'm also testing on ext3 now, and so far no problems there either. I don't know whether this fixes the problem reported above, but it fixes a real problem for me. Cc: "Jorge Boncompte [DTI2]" <jorge@dti2.net> Reported-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Cc: Jan Kara <jack@suse.cz> Cc: <stable@kernel.org> Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12memcg: use correct scan number at reclaimKOSAKI Motohiro
Even when page reclaim is under mem_cgroup, # of scan page is determined by status of global LRU. Fix that. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12mfd: add support for WM8351 revision BMark Brown
No software visible difference from revision A. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Samuel Ortiz <sameo@openedhand.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12acer-wmi: fix regression in backlight detectionMichael Spang
Currently we disable the Acer WMI backlight device if there is no ACPI backlight device. As a result, we end up with no backlight device at all. We should instead disable it if there is an ACPI device, as the other laptop drivers do. This regression was introduced in febf2d9 ("Acer-WMI: fingers off backlight if video.ko is serving this functionality"). Each laptop driver with backlight support got a similar change around febf2d9. The changes to the other drivers look correct; see e.g. a598c82f for a similar but correct change. The regression is also in 2.6.28. Signed-off-by: Michael Spang <mspang@csclub.uwaterloo.ca> Acked-by: Thomas Renninger <trenn@suse.de> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Carlos Corbacho <carlos@strangeworlds.co.uk> Cc: Len Brown <len.brown@intel.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: <stable@kernel.org> [2.6.28.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12mmc: s3cmci: fix s3c2410_dma_config() arguments.Ben Dooks
The s3cmci driver is calling s3c2410_dma_config with incorrect data for the DCON register. The S3C2410_DCON_HWTRIG is implicit in the channel configuration and the device selection of S3C2410_DCON_CH0_SDI is incorrect as the DMA system may not select channel 0. Signed-off-by: Ben Dooks <ben@simtec.co.uk> Acked-by: Pierre Ossman <drzeus@drzeus.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12MAINTAINERS: downgrade support for man-pagesMichael Kerrisk
Unfortunately, Linux Foundation funding for my work on man-pages/testing/doc under the auspices of the LF documentation fellowship unfortunately ran out a short while ago (after earlier attempts to seek funding, only Google stepped forward with a bit of further funding for the position), so the patch below acknowledges something closer to reality. Unfortunately, there will (probably very) soon be a further downgrade from "Maintained" to "Odd Fixes" or "Orphan", unless some funding miracle occurs. So, if anyone is looking to become man-pages maintainer, there may soon be an opening (okay, don't trample me in the rush ;-).) Signed-off-by: Michael Kerrisk <mtk.manpages@googlemail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12ds2760_battery.c: fix division by zeroDaniel Mack
The 'battery remaining capacity' calculation in drivers/power/ds2760_battery.c lacks a parameter check to a division operation which causes the kernel to oops on my board. [ 21.233750] Division by zero in kernel. [ 21.237646] [<c002955c>] (__div0+0x0/0x20) from [<c012561c>] (Ldiv0+0x8/0x10) [ 21.244816] [<c01bef34>] (ds2760_battery_read_status+0x0/0x2a4) from [<c01bf3a4>] (ds2760_battery_get_property+0x30/0xdc) [ 21.255803] r8:c03a22c0 r7:c7886100 r6:00000009 r5:c782fe7c r4:c7886084 [ 21.262518] [<c01bf374>] (ds2760_battery_get_property+0x0/0xdc) from [<c01bde98>] (power_supply_show_property+0x48/0x114) [ 21.273480] r6:c7996000 r5:00000009 r4:00000000 [ 21.278111] [<c01bde50>] (power_supply_show_property+0x0/0x114) from [<c01be158>] (power_supply_uevent+0x188/0x280) [ 21.288537] r8:00000001 r7:c7886100 r6:c7996000 r5:000000b4 r4:00000000 [ 21.295222] [<c01bdfd0>] (power_supply_uevent+0x0/0x280) from [<c015c664>] (dev_uevent+0xd4/0x10c) [ 21.304199] [<c015c590>] (dev_uevent+0x0/0x10c) from [<c0128440>] (kobject_uevent_env+0x180/0x390) [ 21.313170] r5:00000000 r4:c78860ac [ 21.316725] [<c01282c0>] (kobject_uevent_env+0x0/0x390) from [<c0128664>] (kobject_uevent+0x14/0x18) [ 21.325850] [<c0128650>] (kobject_uevent+0x0/0x18) from [<c01bdc34>] (power_supply_changed_work+0x5c/0x70) [ 21.335506] [<c01bdbd8>] (power_supply_changed_work+0x0/0x70) from [<c004d290>] (run_workqueue+0xbc/0x144) [ 21.345167] r4:c7812040 [ 21.347716] [<c004d1d4>] (run_workqueue+0x0/0x144) from [<c004d94c>] (worker_thread+0xa8/0xbc) [ 21.356296] r7:c7812040 r6:c7820b00 r5:c782ffa4 r4:c7812048 [ 21.361957] [<c004d8a4>] (worker_thread+0x0/0xbc) from [<c0051008>] (kthread+0x5c/0x94) [ 21.369971] r7:00000000 r6:c004d8a4 r5:c7812040 r4:c782e000 [ 21.375612] [<c0050fac>] (kthread+0x0/0x94) from [<c00403d0>] (do_exit+0x0/0x688) Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu> Acked-by: Matt Reimer <mreimer@vpop.net> Acked-by: Anton Vorontsov <cbou@mail.ru> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12vfs: add missing unlock in sget()Li Zefan
In sget(), destroy_super(s) is called with s->s_umount held, which makes lockdep unhappy. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Al Viro <viro@ZenIV.linux.org.uk> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Menage <menage@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12pipe_rdwr_fasync: fix the error handling to prevent the leak/crashOleg Nesterov
If the second fasync_helper() fails, pipe_rdwr_fasync() returns the error but leaves the file on ->fasync_readers. This was always wrong, but since 233e70f4228e78eb2f80dc6650f65d3ae3dbf17c "saner FASYNC handling on file close" we have the new problem. Because in this case setfl() doesn't set FASYNC bit, __fput() will not do ->fasync(0), and we leak fasync_struct with ->fa_file pointing to the freed file. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Andi Kleen <andi@firstfloor.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-12drivers/w1/masters/w1-gpio.c: fix read_bit()Daniel Mack
W1 master implementations are expected to return 0 or 1 from their read_bit() function. However, not all platforms do return these values from gpio_get_value() - namely PXAs won't. Hence the w1 gpio-master needs to break the result down to 0 or 1 itself. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Ville Syrjala <syrjala@sci.fi> Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>