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2009-07-31cb710: use SG_MITER_TO_SG/SG_MITER_FROM_SGSebastian Andrzej Siewior
the code allready uses flush_kernel_dcache_page(). This patch updates the driver to the recent sg API changes which require that either SG_MITER_TO_SG or SG_MITER_FROM_SG is set. SG_MITER_TO_SG calls flush_kernel_dcache_page() in sg_mitter_stop() Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Acked-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
2009-07-29eeprom/at25: bugfix "not ready" timeout after writeSebastian Heutling
Under certain circumstances msleep(1) within the loop, which waits for the EEPROM to be finished, might take longer than the timeout. On the next loop the status register might now return to be ready and therefore the loop finishes. The following check now tests if a timeout occurred and if so returns an error although the device reported it was ready. This fix replaces testing the occurrence of the timeout by testing the "not ready" bit in the status register. Signed-off-by: Sebastian Heutling <heutling@who-ing.de> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-12headers: smp_lock.h reduxAlexey Dobriyan
* Remove smp_lock.h from files which don't need it (including some headers!) * Add smp_lock.h to files which do need it * Make smp_lock.h include conditional in hardirq.h It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT This will make hardirq.h inclusion cheaper for every PREEMPT=n config (which includes allmodconfig/allyesconfig, BTW) Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-08Remove multiple KERN_ prefixes from printk formatsJoe Perches
Commit 5fd29d6ccbc98884569d6f3105aeca70858b3e0f ("printk: clean up handling of log-levels and newlines") changed printk semantics. printk lines with multiple KERN_<level> prefixes are no longer emitted as before the patch. <level> is now included in the output on each additional use. Remove all uses of multiple KERN_<level>s in formats. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: copyright fixesJack Steiner
Fix the copyright statements in a couple of GRU files. No functional changes are being made. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: remove references to the obsolete global status handleJack Steiner
Delete references to the SGI GRU GSH hardware resources. These GRU resources have been deleted from the hardware. (These resources have never benn used, anyway). Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: fixes to grudump utilityJack Steiner
Minor fixes to the SGI GRU grudump facility: - fix address where user data is written - add gru number to data passed to user - indicate if context is locked Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: fix potential use-after-free when purging GRU tlbsJack Steiner
Fix potential SGI GRU bug that could cause a use-after-free. If one thread in a task is flushing the GRU and another thread destroys the GRU context, there is the potential to access a table after it has been freed. Copy the gms pointer to a local variable before unlocking the gts table. Note that no refcnt is needed for the gms - the reference is held indirectly by the task's mm_struct. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: add user request to specify gru sliceJack Steiner
Add a user request to specify the gru instruction slice parameter for user contexts. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: generic infrastructure for context optionsJack Steiner
Change the user GRU request for specifying the "task_slice" option to use a generic infrastructure that can be expanded in the future to include additional context options. No new capabilities are added with this patch. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: cleanup gru inline functionsJack Steiner
Cleanup of GRU inline functions to eliminate unnecessary inline code. Update function descriptions. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: delete user request for fetching chiplet statusJack Steiner
Delete the user request for fetching the status of a GRU chiplet. This request has been made obsolete by other changes. Note: this is not a change to a user API - there are no compatibility issues with this change. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: collect per-context user statisticsJack Steiner
Collect GRU statistics for each user GRU context. Statistics are kept for TLB misses & content resource contention. Add user request for retrieving the statistics. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: fix automatic retry of gru instruction failuresJack Steiner
Fix bug in automatic retry of GRU instruction failures. CBR substatus (message queue failure) was being checked incorrectly. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: add user request to explicitly unload a gru contextJack Steiner
Add user function to explicitly unload GRU kernel contexts from the GRU. Only contexts that are not in-use will be unloaded. This function is primarily for testing. It is not expected that this will be used in normal production systems. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: fix cache coherency issues with instruction retryJack Steiner
Fix two problems related to GRU instruction failures. Cache coherency is not maintained for CBEs except when loading or unloading contexts. When reading a CBE to extract error information, the CBE must first be flushed from the cache. The function that reads kerrnel CBEs was reading the wrong CBE. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: update to rev 0.9 of gru specJack Steiner
Update GRU driver to the latest version of the GRU spec. This consists of minor updates: - changes & additions to error status bits - new restriction on handling of TLB misses while in FMM mode - new field (not used by software) in TFH Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: update gru kernel self testsJack Steiner
Change the kernel self tests that can be optionally executed on GRU initialization. This is primarily for testing. Eliminate the BUG statements on failure and return bad status. Add ioctl interface to execute the tests on demand. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: support for asynchronous gru instructionsJack Steiner
Add support for asynchronous GRU instructions. Currently, asynchronous instructions are supported only for GRU instructions issued by the kernel. [akpm@linux-foundation.org: build fix] Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: support instruction completion interruptsJack Steiner
Add support for interrupts generated by GRU instruction completion. Previously, the only interrupts were for TLB misses. The hardware also supports interrupts on instruction completion. This will be supported for instructions issued by the kernel. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: check context state on reloadJack Steiner
Check whether the gru state being loaded into a gru is from a new context or a previously unloaded context. If new, simply zero out the hardware context; if unloaded and valid, reload the old state. This change is primarily for reloading kernel contexts where the previous is not required to be saved. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: fix handling of mesq failuresJack Steiner
Fix endcase in handling GRU message queue failures due to NACKs of PUT requests. Must ensure that the "present" bits are cleared before resending the message. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: support contexts with zero dsrs or cbrsJack Steiner
Support alocation of GRU contexts that contain zero DSR or CBR resources. Some instructions do not require DSR resources. Contexts without CBR resources are useful for diagnostics. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: change resource assignment for kernel threadsJack Steiner
Change the way GRU resources are assigned for kernel threads. GRU contexts for kernel threads are now allocated on demand and can be stolen by user processes when idle. This allows MPI jobs to use ALL of the GRU resources when the kernel is not using them. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: support cch_allocate for kernel threadsJack Steiner
Change the interface to cch_allocate so that it can be used to allocate GRU contexts for kernel threads. Kernel threads use the GRU in unmapped mode and do not require ASIDs for the GRU TLB. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: change context load and unloadJack Steiner
Remove "static" from the functions for loading/unloading GRU contexts. These functions will be called from other GRU files. Fix bug in unlocking gru context. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: dynamic allocation of kernel contextsJack Steiner
Change the interface to gru_alloc_gts() so that it can be used to allocate GRU contexts for kernel threads. Kernel threads do not have vdata structures for the GRU contexts. The GRU resource count are now passed explicitly instead of inside the vdata structure. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: dump chiplet stateJack Steiner
Add support for dumpping the state of an entire GRU chiplet. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18gru: bug fixes for GRU exception handlingJack Steiner
Bug fixes for GRU exception handling. Additional fields from the CBR must be returned to the user to allow the user to correctly diagnose GRU exceptions. Handle endcase in TFH TLB miss handling. Verify that TFH actually indicates a pending exception. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16Merge branch 'akpm'Linus Torvalds
* akpm: (182 commits) fbdev: bf54x-lq043fb: use kzalloc over kmalloc/memset fbdev: *bfin*: fix __dev{init,exit} markings fbdev: *bfin*: drop unnecessary calls to memset fbdev: bfin-t350mcqb-fb: drop unused local variables fbdev: blackfin has __raw I/O accessors, so use them in fb.h fbdev: s1d13xxxfb: add accelerated bitblt functions tcx: use standard fields for framebuffer physical address and length fbdev: add support for handoff from firmware to hw framebuffers intelfb: fix a bug when changing video timing fbdev: use framebuffer_release() for freeing fb_info structures radeon: P2G2CLK_ALWAYS_ONb tested twice, should 2nd be P2G2CLK_DAC_ALWAYS_ONb? s3c-fb: CPUFREQ frequency scaling support s3c-fb: fix resource releasing on error during probing carminefb: fix possible access beyond end of carmine_modedb[] acornfb: remove fb_mmap function mb862xxfb: use CONFIG_OF instead of CONFIG_PPC_OF mb862xxfb: restrict compliation of platform driver to PPC Samsung SoC Framebuffer driver: add Alpha Channel support atmel-lcdc: fix pixclock upper bound detection offb: use framebuffer_alloc() to allocate fb_info struct ... Manually fix up conflicts due to kmemcheck in mm/slab.c
2009-06-16page allocator: do not check NUMA node ID when the caller knows the node is ↵Mel Gorman
valid Callers of alloc_pages_node() can optionally specify -1 as a node to mean "allocate from the current node". However, a number of the callers in fast paths know for a fact their node is valid. To avoid a comparison and branch, this patch adds alloc_pages_exact_node() that only checks the nid with VM_BUG_ON(). Callers that know their node is valid are then converted. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Paul Mundt <lethal@linux-sh.org> [for the SLOB NUMA bits] Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Dave Hansen <dave@linux.vnet.ibm.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16Merge branch 'for-linus2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vegard/kmemcheck * 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/vegard/kmemcheck: (39 commits) signal: fix __send_signal() false positive kmemcheck warning fs: fix do_mount_root() false positive kmemcheck warning fs: introduce __getname_gfp() trace: annotate bitfields in struct ring_buffer_event net: annotate struct sock bitfield c2port: annotate bitfield for kmemcheck net: annotate inet_timewait_sock bitfields ieee1394/csr1212: fix false positive kmemcheck report ieee1394: annotate bitfield net: annotate bitfields in struct inet_sock net: use kmemcheck bitfields API for skbuff kmemcheck: introduce bitfield API kmemcheck: add opcode self-testing at boot x86: unify pte_hidden x86: make _PAGE_HIDDEN conditional kmemcheck: make kconfig accessible for other architectures kmemcheck: enable in the x86 Kconfig kmemcheck: add hooks for the page allocator kmemcheck: add hooks for page- and sg-dma-mappings kmemcheck: don't track page tables ...
2009-06-16Merge branch 'i2c-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging * 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: therm_windtunnel: Convert to a new-style i2c driver therm_adt746x: Convert to a new-style i2c driver windfarm: Convert to new-style i2c drivers therm_pm72: Convert to a new-style i2c driver i2c-viapro: Add new PCI device ID for VX855 i2c/chips: Move max6875 to drivers/misc/eeprom i2c: Do not give adapters a default parent i2c: Do not probe for TV chips on Voodoo3 adapters i2c: Retry automatically on arbitration loss i2c: Remove void casts
2009-06-15i2c/chips: Move max6875 to drivers/misc/eepromWolfram Sang
This driver only reads the user EEPROM of that chip, so we can move it to the eeprom-directory in order to further clean up (and later remove) drivers/i2c/chips. The Kconfig text was updated to match the current functionality, dropping the meanwhile obsoleted parts. Defconfigs have been adapted. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Ben Gardner <gardner.ben@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-06-15Merge commit 'linus/master' into HEADVegard Nossum
Conflicts: MAINTAINERS Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
2009-06-15c2port: annotate bitfield for kmemcheckVegard Nossum
This silences a false positive warning with kmemcheck. Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
2009-06-15Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: Documentation/feature-removal-schedule.txt drivers/scsi/fcoe/fcoe.c net/core/drop_monitor.c net/core/net-traces.c
2009-06-13cb710: more cleanup for the DEBUG case.Michał Mirosław
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
2009-06-13cb710: handle DEBUG define in MakefilePierre Ossman
Signed-off-by: Pierre Ossman <pierre@ossman.eu>
2009-06-13cb710: add missing parenthesisPierre Ossman
Signed-off-by: Pierre Ossman <pierre@ossman.eu>
2009-06-13mmc: Driver for CB710/720 memory card reader (MMC part)Michał Mirosław
The code is divided in two parts. There is a virtual 'bus' driver that handles PCI device and registers three new devices one per card reader type. The other driver handles SD/MMC part of the reader. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
2009-06-13net: fix network driver ndo_start_xmit() return values (part 1)Patrick McHardy
Fix up drivers that return an errno value to qdisc_restart(), causing qdisc_restart() to print a warning and requeue/retransmit the skb. - xpnet: memory allocation error, intention is to drop - ethoc: oversized packet, packet must be dropped - ibmlana: skb freed: use after free - rrunner: skb freed: use after free Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-15[SCSI] ses: fix problems caused by empty SES provided nameYinghai Lu
We use the name provided by SES to name objects. An empty name is legal in SES but causes problems in our generic device hierarchy. Fix this by falling back to a number if the name is either NULL or empty. Also fix a secondary bug spotted in that dev_set_name(dev, name) uses a string format and so would go wrong if name contained a '%'. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-05-06isl29003: fix resume functionalityDaniel Mack
The isl29003 does not interpret the return value of i2c_smbus_write_byte_data() correctly and hence causes an error on system resume. Also introduce power_state_before_suspend and restore the chip's power state upon wakeup. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21sgi-xp/sgi-gru: allow modules to load on non-uv systemsRobin Holt
For an upcoming distro release, we need to have the xp kernel module loadable even when not on UV equipment. The xpc module will not load. This will allow one set of modules dependent upon xp to work on either UV or non-UV equipment. Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Jack Steiner <steiner@sgi.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>
2009-04-13sgi-xpc: clean up numerous globalsRobin Holt
Introduce xpc_arch_ops and eliminate numerous individual global definitions. Signed-off-by: Robin Holt <holt@sgi.com> Cc: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-13sgi-xpc: implement opencomplete messagingRobin Holt
sgi-xpc has a window of failure where an open message can be sent and a subsequent data message can get lost. We have added a new message (opencomplete) which closes that window. Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-13sgi-xpc: prevent false heartbeat failuresRobin Holt
The heartbeat timeout functionality in sgi-xpc is currently not trained to the connection time. If a connection is made and the code is in the last polling window prior to doing a timeout, the next polling window will see the heartbeat as unchanged and initiate a no-heartbeat disconnect. Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-13at25: make input buffers of at25_*write() constGeert Uytterhoeven
| drivers/misc/eeprom/at25.c:358: warning: assignment from incompatible pointer type Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Kevin Hilman <khilman@deeprootsystems.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-13at24: make input buffers of at24_*write() constGeert Uytterhoeven
| drivers/misc/eeprom/at24.c:508: warning: assignment from incompatible pointer type Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Kevin Hilman <khilman@deeprootsystems.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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