- Mar 13, 2009
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Jody McIntyre authored
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>
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git://git.kernel.org/pub/scm/linux/kernel/git/willy/pciLinus Torvalds authored
* '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
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Faisal Latif authored
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>
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Nick Piggin authored
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>
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KOSAKI Motohiro authored
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>
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Mark Brown authored
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>
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Michael Spang authored
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 febf2d95 ("Acer-WMI: fingers off backlight if video.ko is serving this functionality"). Each laptop driver with backlight support got a similar change around febf2d95. 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>
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Ben Dooks authored
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>
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Michael Kerrisk authored
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>
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Daniel Mack authored
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>
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Li Zefan authored
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>
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Oleg Nesterov authored
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 233e70f4 "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>
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Daniel Mack authored
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>
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akpm@linux-foundation.org authored
Fix the following warning on x86_64: LD vmlinux.o MODPOST vmlinux.o WARNING: vmlinux: 'memcpy' exported twice. Previous export was in vmlinux For x86_64, this symbol is already exported from arch/um/sys-x86_64/ksyms.c. Reported-by:
Boaz Harrosh <bharrosh@panasas.com> Signed-off-by:
WANG Cong <xiyou.wangcong@gmail.com> Tested-by:
Boaz Harrosh <bharrosh@panasas.com> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Renzo Davoli authored
It is currently impossible to run a user-mode linux machine inside another user-mode linux (UML on UML). It breaks after a few instructions. When it tries to check whether SYSEMU is installed (the inner) UML receives an inconsistent result (from the outer UML). This is the output of a broken attempt: $ ./linux mem=256m ubd0=cow Locating the bottom of the address space ... 0x0 Locating the top of the address space ... 0xc0000000 Core dump limits : soft - 0 hard - NONE Checking that ptrace can change system call numbers...OK Checking ptrace new tags for syscall emulation...unsupported Checking syscall emulation patch for ptrace...check_sysemu : expected SIGTRAP, got status = 256 $ The problem is the following: PTRACE_SYSCALL/SINGLESTEP is currently managed inside arch_ptrace for ARCH=um. PTRACE_SYSEMU/SUSEMU_SINGLESTEP is not captured in arch_ptrace's switch, therefore it is erroneously passed back to ptrace_request (in kernel/ptrace). This simple patch simply forces ptrace to return an error on PTRACE_SYSEMU/SUSEMU_SINGLESTEP as it is unsupported on ARCH=um, and fixes the problem. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Renzo Davoli <renzo@cs.unibo.it> Reviewed-by:
WANG Cong <xiyou.wangcong@gmail.com> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Alex Chiang authored
The PCIe port driver calls pci_enable_device() during probe but never calls pci_disable_device() during remove. Cc: stable@kernel.org Signed-off-by:
Alex Chiang <achiang@hp.com> Signed-off-by:
Matthew Wilcox <willy@linux.intel.com>
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Prakash Punnoor authored
"Enabling" should read "Disabling" Signed-off-by:
Prakash Punnoor <prakash@punnoor.de> Signed-off-by:
Matthew Wilcox <willy@linux.intel.com>
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Prakash Punnoor authored
Prakash's system needs MSI disabled on some bridges, but not all. This seems to be the minimal fix for 2.6.29, but should be replaced during 2.6.30. Signed-off-by:
Prakash Punnoor <prakash@punnoor.de> Signed-off-by:
Matthew Wilcox <willy@linux.intel.com>
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Michael Ellerman authored
The RPA PCI hotplug driver calls EEH routines, so should depend on EEH. Also PPC_PSERIES implies PPC64, so remove that. Signed-off-by:
Michael Ellerman <michael@ellerman.id.au> Signed-off-by:
Matthew Wilcox <willy@linux.intel.com>
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Alex Chiang authored
Commit 47a8b0cc (Enable PCIe AER only after checking firmware support) wants to walk the PCI bus in the remove path to disable AER, and calls pci_walk_bus for downstream bridges. Unfortunately, in the remove path, we remove devices and bridges in a depth-first manner, starting with the furthest downstream bridge and working our way backwards. The furthest downstream bridges will not have a dev->subordinate, and we hit a NULL deref in pci_walk_bus. Check for dev->subordinate first before attempting to walk the PCI hierarchy below us. Acked-by:
Andrew Patterson <andrew.patterson@hp.com> Signed-off-by:
Alex Chiang <achiang@hp.com> Signed-off-by:
Matthew Wilcox <willy@linux.intel.com>
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Alexander Duyck authored
This patch is intended to disable L0s ASPM link state for 82598 (ixgbe) parts due to the fact that it is possible to corrupt TX data when coming back out of L0s on some systems. The workaround had been added for 82575 (igb) previously, but did not use the ASPM api. This quirk uses the ASPM api to prevent the ASPM subsystem from re-enabling the L0s state. Instead of adding the fix in igb to the ixgbe driver as well it was decided to move it into a pci quirk. It is necessary to move the fix out of the driver and into a pci quirk in order to prevent the issue from occuring prior to driver load to handle the possibility of the device being passed to a VM via direct assignment. Signed-off-by:
Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com> CC: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by:
Matthew Wilcox <willy@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sunhme: Fix qfe parent detection. sparc64: Fix lost interrupts on sun4u. sparc64: wait_event_interruptible_timeout may return -ERESTARTSYS jsflash: stop defining MAJOR_NR
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git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds authored
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: MIPS: IP27: Enable RAID5 module MIPS: TXx9: update defconfigs MIPS: NEC VR5500 processor support fixup MIPS: Fix build of non-CONFIG_SYSVIPC version of sys_32_ipc
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- Mar 12, 2009
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git://oss.sgi.com/xfs/xfsLinus Torvalds authored
* 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: only issues a cache flush on unmount if barriers are enabled xfs: prevent lockdep false positive in xfs_iget_cache_miss xfs: prevent kernel crash due to corrupted inode log format
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Ralf Baechle authored
Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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Atsushi Nemoto authored
Enable following features: * MTD (PHYSMAP) * LED (LEDS_GPIO) * RBTX4939 * 7SEGLED * IDE (IDE_TX4938, IDE_TX4939) * SMC91X * RTC_DRV_TX4939 Signed-off-by:
Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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Shinya Kuribayashi authored
Current VR5500 processor support lacks of some functions which are expected to be configured/synthesized on arch initialization. Here're some VR5500A spec notes: * All execution hazards are handled in hardware. * Once VR5500A stops the operation of the pipeline by WAIT instruction, it could return from the standby mode only when either a reset, NMI request, or all enabled interrupts is/are detected. In other words, if interrupts are disabled by Status.IE=0, it keeps in standby mode even when interrupts are internally asserted. Notes on WAIT: The operation of the processor is undefined if WAIT insn is in the branch delay slot. The operation is also undefined if WAIT insn is executed when Status.EXL and Status.ERL are set to 1. * VR5500A core only implements the Load prefetch. With these changes, it boots fine. Signed-off-by:
Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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Xiaotian Feng authored
Signed-off-by:
Xiaotian Feng <xiaotian.feng@windriver.com> Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6Linus Torvalds authored
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm: fix EDID parser problem with positive/negative hsync/vsync
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpcLinus Torvalds authored
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: radeonfb/aty128fb: Disable broken early resume hook for PowerBooks hvc_console: Remove tty->low_latency on pseries backends powerpc: fix linkstation and storcenter compilation breakage powerpc/4xx: Enable SERIAL_OF support by default for Virtex platforms
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git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intelLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: drm/i915: fix 945 fence register writes for fence 8 and above. drm/i915: Protect active fences on i915 drm/i915: Check to see if we've pinned all available fences drm/i915: Check fence status on every pin. drm/i915: First recheck for an empty fence register. drm/i915: Fix bad \n in MTRR failure notice. drm/i915: Don't restore palettes through VGA registers. i915: add newline to i915_gem_object_pin failure msg drm: Return EINVAL on duplicate objects in execbuffer object list
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Linus Torvalds authored
Merge branch 'x86-fixes-for-linus' of 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: work around Fedora-11 x86-32 kernel failures on Intel Atom CPUs
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OGAWA Hirofumi authored
On swapon() path, it has already i_mutex. So, this uses i_alloc_sem instead of it. Signed-off-by:
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Reported-by:
Laurent GUERBY <laurent@guerby.net> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Eric Anholt authored
The last 8 fence registers sit at a different offset, so when we went to set fence number 8 in the lower offset, we instead set PGETBL_CTL, and the GPU got all sorts of angry at us. fd.o bug #20567. Easily reproducible by running glxgears and killing it about 6 times. Signed-off-by:
Eric Anholt <eric@anholt.net>
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Chris Wilson authored
The i915 also uses the fence registers for GPU access to tiled buffers so we cannot reallocate one whilst it is on the active list. By performing a LRU scan of the fenced buffers we also avoid waiting the possibility of waiting on a pinned, or otherwise unusable, buffer. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
Eric Anholt <eric@anholt.net>
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Ingo Molnar authored
Impact: work around boot crash Work around Intel Atom erratum AAH41 (probabilistically) - it's triggering in the field. Reported-by:
Linus Torvalds <torvalds@linux-foundation.org> Tested-by:
Kyle McMartin <kyle@redhat.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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- Mar 11, 2009
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Wu Fengguang authored
Fix kpf_copy_bit(src,dst) to be kpf_copy_bit(dst,src) to match the actual call patterns, e.g. kpf_copy_bit(kflags, KPF_LOCKED, PG_locked). This misplacement of src/dst only affected reporting of PG_writeback, PG_reclaim and PG_buddy. For others kflags==uflags so not affected. Signed-off-by:
Wu Fengguang <fengguang.wu@intel.com> Reviewed-by:
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: stable@kernel.org Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Chris Wilson authored
We need to check and report if there are no available fences - or else we spin endlessly waiting for a buffer to magically unpin itself. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
Eric Anholt <eric@anholt.net>
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Chris Wilson authored
As we may steal the fence register of an unpinned buffer for another, every time we repin the buffer we need to recheck whether it needs to be allocated a fence. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
Eric Anholt <eric@anholt.net>
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Chris Wilson authored
If we wait upon a request and successfully unbind a buffer occupying a fence register, then that slot will be freed and cause a NULL derefrence upon rescanning. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
Eric Anholt <eric@anholt.net>
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