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2008-06-28Make sure all changes to md/sync_action are notified.Neil Brown1-0/+2
When the 'resync' thread starts or stops, when we explicitly set sync_action, or when we determine that there is definitely nothing to do, we notify sync_action. To stop "sync_action" from occasionally showing the wrong value, we introduce a new flags - MD_RECOVERY_RECOVER - to say that a recovery is probably needed or happening, and we make sure that we set MD_RECOVERY_RUNNING before clearing MD_RECOVERY_NEEDED. Signed-off-by: Neil Brown <neilb@suse.de>
2008-06-28Allow setting start point for requested check/repairNeil Brown1-0/+2
This makes it possible to just resync a small part of an array. e.g. if a drive reports that it has questionable sectors, a 'repair' of just the region covering those sectors will cause them to be read and, if there is an error, re-written with correct data. Signed-off-by: Neil Brown <neilb@suse.de>
2008-06-28Improve setting of "events_cleared" for write-intent bitmaps.Neil Brown1-0/+1
When an array is degraded, bits in the write-intent bitmap are not cleared, so that if the missing device is re-added, it can be synced by only updated those parts of the device that have changed since it was removed. The enable this a 'events_cleared' value is stored. It is the event counter for the array the last time that any bits were cleared. Sometimes - if a device disappears from an array while it is 'clean' - the events_cleared value gets updated incorrectly (there are subtle ordering issues between updateing events in the main metadata and the bitmap metadata) resulting in the missing device appearing to require a full resync when it is re-added. With this patch, we update events_cleared precisely when we are about to clear a bit in the bitmap. We record events_cleared when we clear the bit internally, and copy that to the superblock which is written out before the bit on storage. This makes it more "obviously correct". We also need to update events_cleared when the event_count is going backwards (as happens on a dirty->clean transition of a non-degraded array). Thanks to Mike Snitzer for identifying this problem and testing early "fixes". Cc: "Mike Snitzer" <snitzer@gmail.com> Signed-off-by: Neil Brown <neilb@suse.de>
2008-06-24KVM: close timer injection race window in __vcpu_runMarcelo Tosatti1-0/+1
If a timer fires after kvm_inject_pending_timer_irqs() but before local_irq_disable() the code will enter guest mode and only inject such timer interrupt the next time an unrelated event causes an exit. It would be simpler if the timer->pending irq conversion could be done with IRQ's disabled, so that the above problem cannot happen. For now introduce a new vcpu requests bit to cancel guest entry. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-06-23tty_driver: Update required method documentationAlan Cox1-3/+2
Some of the requirement rules are now more relaxed. Also correct a contradiction in the previous update Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-21Add return value to reserve_bootmem_node()Bernhard Walle1-1/+1
This patch changes the function reserve_bootmem_node() from void to int, returning -ENOMEM if the allocation fails. This fixes a build problem on x86 with CONFIG_KEXEC=y and CONFIG_NEED_MULTIPLE_NODES=y Signed-off-by: Bernhard Walle <bwalle@suse.de> Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-18Merge branch 'agp-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6Linus Torvalds2-14/+6
* 'agp-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6: agp/intel: cleanup some serious whitespace badness [AGP] intel_agp: Add support for Intel 4 series chipsets [AGP] intel_agp: extra stolen mem size available for IGD_GM chipset agp: more boolean conversions. drivers/char/agp - use bool agp: two-stage page destruction issue agp/via: fixup pci ids
2008-06-19agp: more boolean conversions.Dave Airlie2-3/+3
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-06-19drivers/char/agp - use boolJoe Perches1-11/+3
Use boolean in AGP instead of having own TRUE/FALSE -- Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-06-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds1-1/+1
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (43 commits) netlink: genl: fix circular locking Revert "mac80211: Use skb_header_cloned() on TX path." af_unix: fix 'poll for write'/ connected DGRAM sockets tun: Proper handling of IPv6 header in tun driver when TUN_NO_PI is set atl1: relax eeprom mac address error check net/enc28j60: low power mode net/enc28j60: section fix sky2: 88E8040T pci device id netxen: download firmware in pci probe netxen: cleanup debug messages netxen: remove global physical_port array netxen: fix portnum for hp mezz cards ibm_newemac: select CRC32 in Kconfig xfrm: fix fragmentation for ipv4 xfrm tunnel netfilter: nf_conntrack_h323: fix module unload crash netfilter: nf_conntrack_h323: fix memory leak in module initialization error path netfilter: nf_nat: fix RCU races atm: [he] send idle cells instead of unassigned when in SDH mode atm: [he] limit queries to the device's register space atm: [br2864] fix routed vcmux support ...
2008-06-16ipv6 sit: Avoid extra need for compat layer in PRL management.YOSHIFUJI Hideaki1-1/+1
We've introduced extra need of compat layer for ip_tunnel_prl{} for PRL (Potential Router List) management. Though compat_ioctl is still missing in ipv4/ipv6, let's make the interface more straight-forward and eliminate extra need for nasty compat layer anyway since the interface is new for 2.6.26. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-16Export <linux/a.out.h> to userspace again.David Woodhouse1-0/+3
This seems to have been removed accidentally in commit ed7b1889da256977574663689b598d88950bbd23 ("Unexport asm/page.h"), but wasn't supposed to have been -- the original patch at http://lkml.org/lkml/2007/10/30/144 just moved it from $(header-y) to $(unifdef-y) Signed-off-by: David Woodhouse <dwmw2@infradead.org> Acked-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-16Remove #ifdef CONFIG_ARCH_SUPPORTS_AOUT from <linux/a.out.h>David Woodhouse1-8/+0
This file is only included where it makes sense now, so there's no need for the CONFIG_ARCH_SUPPORTS_AOUT conditional -- and that conditional is bad, because we want to export <linux/a.out.h> to userspace. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Acked-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-14Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6Linus Torvalds1-0/+1
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: fixup write combine comment in pci_mmap_resource x86: PAT export resource_wc in pci sysfs x86, pci-dma.c: don't always add __GFP_NORETRY to gfp suspend-vs-iommu: prevent suspend if we could not resume x86: pci-dma.c: use __GFP_NO_OOM instead of __GFP_NORETRY pci, x86: add workaround for bug in ASUS A7V600 BIOS (rev 1005) PCI: use dev_to_node in pci_call_probe PCI: Correct last two HP entries in the bfsort whitelist
2008-06-13Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds1-7/+0
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: tcp: Revert 'process defer accept as established' changes. ipv6: Fix duplicate initialization of rawv6_prot.destroy bnx2x: Updating the Maintainer net: Eliminate flush_scheduled_work() calls while RTNL is held. drivers/net/r6040.c: correct bad use of round_jiffies() fec_mpc52xx: MPC52xx_MESSAGES_DEFAULT: 2nd NETIF_MSG_IFDOWN => IFUP ipg: fix receivemode IPG_RM_RECEIVEMULTICAST{,HASH} in ipg_nic_set_multicast_list() netfilter: nf_conntrack: fix ctnetlink related crash in nf_nat_setup_info() netfilter: Make nflog quiet when no one listen in userspace. ipv6: Fail with appropriate error code when setting not-applicable sockopt. ipv6: Check IPV6_MULTICAST_LOOP option value. ipv6: Check the hop limit setting in ancillary data. ipv6 route: Fix route lifetime in netlink message. ipv6 mcast: Check address family of gf_group in getsockopt(MS_FILTER). dccp: Bug in initial acknowledgment number assignment dccp ccid-3: X truncated due to type conversion dccp ccid-3: TFRC reverse-lookup Bug-Fix dccp ccid-2: Bug-Fix - Ack Vectors need to be ignored on request sockets dccp: Fix sparse warnings dccp ccid-3: Bug-Fix - Zero RTT is possible
2008-06-12pagemap: pass mm into pagewalkersDave Hansen1-8/+9
We need this at least for huge page detection for now, because powerpc needs the vm_area_struct to be able to determine whether a virtual address is referring to a huge page (its pmd_huge() doesn't work). It might also come in handy for some of the other users. Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com> Acked-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-12cciss: add new hardware supportMike Miller1-0/+1
Add support for the next generation of HP Smart Array SAS/SATA controllers. Shipping date is late Fall 2008. Bump the driver version to 3.6.20 to reflect the new hardware support from patch 1 of this set. Signed-off-by: Mike Miller <mike.miller@hp.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-12proc_fs.h: move struct mm_struct forward-declarationBen Nizette1-2/+2
Move the forward-declaration of struct mm_struct a little way up proc_fs.h. This fixes a bunch of "'struct mm_struct' declared inside parameter list" warnings with CONFIG_PROC_FS=n Signed-off-by: Ben Nizette <bn@niasdigital.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-12tcp: Revert 'process defer accept as established' changes.David S. Miller1-7/+0
This reverts two changesets, ec3c0982a2dd1e671bad8e9d26c28dcba0039d87 ("[TCP]: TCP_DEFER_ACCEPT updates - process as established") and the follow-on bug fix 9ae27e0adbf471c7a6b80102e38e1d5a346b3b38 ("tcp: Fix slab corruption with ipv6 and tcp6fuzz"). This change causes several problems, first reported by Ingo Molnar as a distcc-over-loopback regression where connections were getting stuck. Ilpo Järvinen first spotted the locking problems. The new function added by this code, tcp_defer_accept_check(), only has the child socket locked, yet it is modifying state of the parent listening socket. Fixing that is non-trivial at best, because we can't simply just grab the parent listening socket lock at this point, because it would create an ABBA deadlock. The normal ordering is parent listening socket --> child socket, but this code path would require the reverse lock ordering. Next is a problem noticed by Vitaliy Gusev, he noted: ---------------------------------------- >--- a/net/ipv4/tcp_timer.c >+++ b/net/ipv4/tcp_timer.c >@@ -481,6 +481,11 @@ static void tcp_keepalive_timer (unsigned long data) > goto death; > } > >+ if (tp->defer_tcp_accept.request && sk->sk_state == TCP_ESTABLISHED) { >+ tcp_send_active_reset(sk, GFP_ATOMIC); >+ goto death; Here socket sk is not attached to listening socket's request queue. tcp_done() will not call inet_csk_destroy_sock() (and tcp_v4_destroy_sock() which should release this sk) as socket is not DEAD. Therefore socket sk will be lost for freeing. ---------------------------------------- Finally, Alexey Kuznetsov argues that there might not even be any real value or advantage to these new semantics even if we fix all of the bugs: ---------------------------------------- Hiding from accept() sockets with only out-of-order data only is the only thing which is impossible with old approach. Is this really so valuable? My opinion: no, this is nothing but a new loophole to consume memory without control. ---------------------------------------- So revert this thing for now. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-12Merge branch 'pci-for-jesse' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip into for-linusJesse Barnes1-0/+1
2008-06-12Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tipLinus Torvalds1-0/+13
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: 64-bit: fix arithmetics overflow sched: fair group: fix overflow(was: fix divide by zero) sched: fix TASK_WAKEKILL vs SIGKILL race
2008-06-12Merge branch 'core/iter-div' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tipLinus Torvalds2-10/+27
* 'core/iter-div' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: always_inline timespec_add_ns add an inlined version of iter_div_u64_rem common implementation of iterative div/mod
2008-06-12always_inline timespec_add_nsJeremy Fitzhardinge1-2/+5
timespec_add_ns is used from the x86-64 vdso, which cannot call out to other kernel code. Make sure that timespec_add_ns is always inlined (and only uses always_inlined functions) to make sure there are no unexpected calls. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-12add an inlined version of iter_div_u64_remJeremy Fitzhardinge1-0/+19
iter_div_u64_rem is used in the x86-64 vdso, which cannot call other kernel code. For this case, provide the always_inlined version, __iter_div_u64_rem. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-12common implementation of iterative div/modJeremy Fitzhardinge2-9/+4
We have a few instances of the open-coded iterative div/mod loop, used when we don't expcet the dividend to be much bigger than the divisor. Unfortunately modern gcc's have the tendency to strength "reduce" this into a full mod operation, which isn't necessarily any faster, and even if it were, doesn't exist if gcc implements it in libgcc. The workaround is to put a dummy asm statement in the loop to prevent gcc from performing the transformation. This patch creates a single implementation of this loop, and uses it to replace the open-coded versions I know about. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Segher Boessenkool <segher@kernel.crashing.org> Cc: Christian Kujau <lists@nerdbynature.de> Cc: Robert Hancock <hancockr@shaw.ca> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-12x86: PAT export resource_wc in pci sysfsvenkatesh.pallipadi@intel.com1-0/+1
For the ranges with IORESOURCE_PREFETCH, export a new resource_wc interface in pci /sysfs along with resource (which is uncached). Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-06-11Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6Linus Torvalds2-3/+4
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (23 commits) ACPICA: fix stray va_end() caused by mis-merge ACPI: Reject below-freezing temperatures as invalid critical temperatures ACPICA: Fix for access to deleted object <regression> ACPICA: Fix to make _SST method optional ACPICA: Fix for Load operator, load table at the namespace root ACPICA: Ignore ACPI table signature for Load() operator ACPICA: Fix to allow zero-length ASL field declarations ACPI: use memory_read_from_buffer() bay: exit if notify handler cannot be installed dock.c remove trailing printk whitespace proper prototype for acpi_processor_tstate_has_changed() ACPI: handle invalid ACPI SLIT table PNPACPI: use _CRS IRQ descriptor length for _SRS pnpacpi: fix shareable IRQ encode/decode pnpacpi: fix IRQ flag decoding MAINTAINERS: update ACPI homepage ACPI 2.6.26-rc2: Add missing newline to DSDT/SSDT warning message ACPI: EC: Use msleep instead of udelay while waiting for event. thinkpad-acpi: fix LED handling on older ThinkPads thinkpad-acpi: fix initialization error paths ...
2008-06-11pnpacpi: fix IRQ flag decodingBjorn Helgaas1-3/+3
When decoding IRQ trigger mode and polarity, it is not enough to mask by IORESOURCE_BITS because there are now additional bits defined. For example, if IORESOURCE_IRQ_SHAREABLE was set, we failed to set *triggering and *polarity at all. I can't point to a failure that this patch fixes, but bugs in this area have caused problems when resuming after suspend, for example: http://bugzilla.kernel.org/show_bug.cgi?id=6316 http://bugzilla.kernel.org/show_bug.cgi?id=9487 https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/152187 This is based on a patch by Tom Jaeger: http://bugzilla.kernel.org/show_bug.cgi?id=9487#c32 [rene.herman@keyaccess.nl: fix comment] Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11cpuidle acpi driver: fix oops on AC<->DCVenkatesh Pallipadi1-0/+1
cpuidle and acpi driver interaction bug with the way cpuidle_register_driver() is called. Due to this bug, there will be oops on AC<->DC on some systems, where they support C-states in one DC and not in AC. The current code does ON BOOT: Look at CST and other C-state info to see whether more than C1 is supported. If it is, then acpi processor_idle does a cpuidle_register_driver() call, which internally enables the device. ON CST change notification (AC<->DC) and on suspend-resume: acpi driver temporarily disables device, updates the device with any new C-states, and reenables the device. The problem is is on boot, there are no C2, C3 states supported and we skip the register. Later on AC<->DC, we may get a CST notification and we try to reevaluate CST and enabled the device, without actually registering it. This causes breakage as we try to create /sys fs sub directory, without the parent directory which is created at register time. Thanks to Sanjeev for reporting the problem here. http://bugzilla.kernel.org/show_bug.cgi?id=10394 Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11Merge branch 'kvm-updates-2.6.26' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvmLinus Torvalds1-1/+1
* 'kvm-updates-2.6.26' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: KVM: MMU: Fix is_empty_shadow_page() check KVM: MMU: Fix printk() format string KVM: IOAPIC: only set remote_irr if interrupt was injected KVM: MMU: reschedule during shadow teardown KVM: VMX: Clear CR4.VMXE in hardware_disable KVM: migrate PIT timer KVM: ppc: Report bad GFNs KVM: ppc: Use a read lock around MMU operations, and release it on error KVM: ppc: Remove unmatched kunmap() call KVM: ppc: add lwzx/stwz emulation KVM: ppc: Remove duplicate function KVM: s390: Fix race condition in kvm_s390_handle_wait KVM: s390: Send program check on access error KVM: s390: fix interrupt delivery KVM: s390: handle machine checks when guest is running KVM: s390: fix locking order problem in enable_sie KVM: s390: use yield instead of schedule to implement diag 0x44 KVM: x86 emulator: fix hypercall return value on AMD KVM: ia64: fix zero extending for mmio ld1/2/4 emulation in KVM
2008-06-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds4-3/+6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (42 commits) net: Fix routing tables with id > 255 for legacy software sky2: Hold RTNL while calling dev_close() s2io iomem annotations atl1: fix suspend regression qeth: start dev queue after tx drop error qeth: Prepare-function to call s390dbf was wrong qeth: reduce number of kernel messages qeth: Use ccw_device_get_id(). qeth: layer 3 Oops in ip event handler virtio: use callback on empty in virtio_net virtio: virtio_net free transmit skbs in a timer virtio: Fix typo in virtio_net_hdr comments virtio_net: Fix skb->csum_start computation ehea: set mac address fix sfc: Recover from RX queue flush failure add missing lance_* exports ixgbe: fix typo forcedeth: msi interrupts ipsec: pfkey should ignore events when no listeners pppoe: Unshare skb before anything else ...
2008-06-10Merge branch 'davem-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6David S. Miller1-1/+1
2008-06-10net: Fix routing tables with id > 255 for legacy softwareKrzysztof Piotr Oledzki1-0/+1
Most legacy software do not like tables > 255 as rtm_table is u8 so tb_id is sent &0xff and it is possible to mismatch for example table 510 with table 254 (main). This patch introduces RT_TABLE_COMPAT=252 so the code uses it if tb_id > 255. It makes such old applications happy, new ones are still able to use RTA_TABLE to get a proper table id. Signed-off-by: Krzysztof Piotr Oledzki <ole@ans.pl> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-10virtio: Fix typo in virtio_net_hdr commentsMark McLoughlin1-1/+1
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-06-10inet{6}_request_sock: Init ->opt and ->pktopts in the constructorArnaldo Carvalho de Melo1-1/+3
Wei Yongjun noticed that we may call reqsk_free on request sock objects where the opt fields may not be initialized, fix it by introducing inet_reqsk_alloc where we initialize ->opt to NULL and set ->pktopts to NULL in inet6_reqsk_alloc. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-10ide: remove the ide_etrax100 chipset typeAdrian Bunk1-1/+1
I forgot to remove the ide_etrax100 chipset type when removing the ETRAX_IDE driver. Reported-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-06-10sched: fix TASK_WAKEKILL vs SIGKILL raceOleg Nesterov1-0/+13
schedule() has the special "TASK_INTERRUPTIBLE && signal_pending()" case, this allows us to do current->state = TASK_INTERRUPTIBLE; schedule(); without fear to sleep with pending signal. However, the code like current->state = TASK_KILLABLE; schedule(); is not right, schedule() doesn't take TASK_WAKEKILL into account. This means that mutex_lock_killable(), wait_for_completion_killable(), down_killable(), schedule_timeout_killable() can miss SIGKILL (and btw the second SIGKILL has no effect). Introduce the new helper, signal_pending_state(), and change schedule() to use it. Hopefully it will have more users, that is why the task's state is passed separately. Note this "__TASK_STOPPED | __TASK_TRACED" check in signal_pending_state(). This is needed to preserve the current behaviour (ptrace_notify). I hope this check will be removed soon, but this (afaics good) change needs the separate discussion. The fast path is "(state & (INTERRUPTIBLE | WAKEKILL)) + signal_pending(p)", basically the same that schedule() does now. However, this patch of course bloats schedule(). Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-09include/linux/ssb/ssb_driver_gige.h typo fixAdrian Bunk1-1/+1
This patch fixes a typo in the name of a config variable. Reported-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Adrian Bunk <bunk@kernel.org> Reviewed-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-09Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds1-8/+8
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] ehea: Remove dependency on MEMORY_HOTPLUG [POWERPC] Make walk_memory_resource available with MEMORY_HOTPLUG=n [POWERPC] Use dev_set_name in pci_64.c [POWERPC] Fix incorrect enabling of VMX when building signal or user context [POWERPC] boot/Makefile CONFIG_ variable fixes
2008-06-09mm: Minor clean-up of page flags in mm/page_alloc.cRuss Anderson1-0/+24
Minor source code cleanup of page flags in mm/page_alloc.c. Move the definition of the groups of bits to page-flags.h. The purpose of this clean up is that the next patch will conditionally add a page flag to the groups. Doing that in a header file is cleaner than adding #ifdefs to the C code. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-09[POWERPC] Make walk_memory_resource available with MEMORY_HOTPLUG=nNathan Lynch1-8/+8
The ehea driver was recently changed[1] to use walk_memory_resource() to detect the system's memory layout. However, walk_memory_resource() is available only when memory hotplug is enabled. So CONFIG_EHEA was made to depend on MEMORY_HOTPLUG [2], but it is inappropriate for a network driver to have such a dependency. Make the declaration of walk_memory_resource() and its powerpc implementation (ehea is powerpc-specific) unconditionally available. [1] 48cfb14f8b89d4d5b3df6c16f08b258686fb12ad "ehea: Add DLPAR memory remove support" [2] fb7b6ca2b6b7c23b52be143bdd5f55a23b9780c8 "ehea: Add dependency to Kconfig" Signed-off-by: Nathan Lynch <ntl@pobox.com> Acked-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-08fat_valid_media() isn't for userspaceAdrian Bunk1-6/+6
Commit 73f20e58b1d586e9f6d3ddc3aad872829aca7743 ("FAT_VALID_MEDIA(): remove pointless test") wrongly added the new fat_valid_media() function to the userspace-visible part of include/linux/msdos_fs.h Move it to the part of include/linux/msdos_fs.h that is not exported to userspace. Reported-by: Onur Küçük <onur@pardus.org.tr> Reported-by: S.Çağlar Onur <caglar@pardus.org.tr> Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-06Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4Linus Torvalds1-0/+3
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: enable barriers by default jbd2: Fix barrier fallback code to re-lock the buffer head ext4: Display the journal_async_commit mount option in /proc/mounts jbd2: If a journal checksum error is detected, propagate the error to ext4 jbd2: Fix memory leak when verifying checksums in the journal ext4: fix online resize bug ext4: Fix uninit block group initialization with FLEX_BG ext4: Fix use of uninitialized data with debug enabled.
2008-06-06Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/chrisw/lsm-2.6Linus Torvalds1-8/+21
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/chrisw/lsm-2.6: capabilities: remain source compatible with 32-bit raw legacy capability support. LSM: remove stale web site from MAINTAINERS
2008-06-06vm: add kzalloc_node() inlineJeff Layton1-0/+11
To get zeroed out memory from a particular NUMA node. To be used by sunrpc. Signed-off-by: Jeff Layton <jlayton@redhat.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-06ipc: restore MSGPOOL original valueNadia Derbey1-2/+2
When posting: [PATCH 1/8] Scaling msgmni to the amount of lowmem (see http://article.gmane.org/gmane.linux.kernel/637849/) I changed the MSGPOOL value to make it fit what is said in the man pages (i.e. a size in bytes). But Michael Kerrisk rightly complained that this change could affect the ABI. So I'm posting this patch to make MSGPOOL expressed back in Kbytes. Michael, on his side, has fixed the man page. Signed-off-by: Nadia Derbey <Nadia.Derbey@bull.net> Cc: Pierre Peiffer <peifferp@gmail.com> Cc: Manfred Spraul <manfred@colorfullife.com> Acked-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>
2008-06-06introduce memory_read_from_buffer()Akinobu Mita1-1/+4
This patch introduces memory_read_from_buffer(). The only difference between memory_read_from_buffer() and simple_read_from_buffer() is which address space the function copies to. simple_read_from_buffer copies to user space memory. memory_read_from_buffer copies to normal memory. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Doug Warzecha <Douglas_Warzecha@dell.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Matt Domsch <Matt_Domsch@dell.com> Cc: Abhay Salunke <Abhay_Salunke@dell.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Markus Rechberger <markus.rechberger@amd.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Bob Moore <robert.moore@intel.com> Cc: Thomas Renninger <trenn@suse.de> Cc: Len Brown <lenb@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Cc: Michael Holzheu <holzheu@de.ibm.com> Cc: Brian King <brking@us.ibm.com> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Cc: Andrew Vasquez <linux-driver@qlogic.com> Cc: Seokmann Ju <seokmann.ju@qlogic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-06lib: export bitrev16Harvey Harrison1-0/+1
Bluetooth will be able to use this. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Dave Young <hidave.darkstar@gmail.com> Cc: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-06Fix various old email addresses for dwmw2David Woodhouse2-2/+2
Although if people have questions about ARCnet, perhaps it's _better_ for them to be mailing dwmw2@cam.ac.uk about it... Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-06KVM: migrate PIT timerMarcelo Tosatti1-1/+1
Migrate the PIT timer to the physical CPU which vcpu0 is scheduled on, similarly to what is done for the LAPIC timers, otherwise PIT interrupts will be delayed until an unrelated event causes an exit. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>