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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86Linus Torvalds2008-02-06
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: x86: fix deadlock, make pgd_lock irq-safe virtio: fix trivial build bug x86: fix mttr trimming x86: delay CPA self-test and repeat it x86: fix 64-bit sections generic: add __FINITDATA x86: remove suprious ifdefs from pageattr.c x86: mark the .rodata section also NX x86: fix iret exception recovery on 64-bit cpuidle: dubious one-bit signed bitfield in cpuidle.h x86: fix sparse warnings in powernow-k8.c x86: fix sparse error in traps_32.c x86: trivial sparse/checkpatch in quirks.c x86 ptrace: disallow null cs/ss MAINTAINERS: RDC R-321x SoC maintainer brk randomization: introduce CONFIG_COMPAT_BRK brk: check the lower bound properly x86: remove X2 workaround x86: make spurious fault handler aware of large mappings x86: make traps on entry code be debuggable in user space, 64-bit
| * generic: add __FINITDATAIngo Molnar2008-02-06
| | | | | | | | Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * cpuidle: dubious one-bit signed bitfield in cpuidle.hHarvey Harrison2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fix these sparse warnings: CHECK arch/x86/kernel/acpi/cstate.c include/linux/cpuidle.h:82:17: error: dubious one-bit signed bitfield CHECK arch/x86/kernel/acpi/processor.c include/linux/cpuidle.h:82:17: error: dubious one-bit signed bitfield CHECK arch/x86/kernel/cpu/cpufreq/powernow-k7.c include/linux/cpuidle.h:82:17: error: dubious one-bit signed bitfield CHECK arch/x86/kernel/cpu/cpufreq/powernow-k8.c include/linux/cpuidle.h:82:17: error: dubious one-bit signed bitfield CHECK arch/x86/kernel/cpu/cpufreq/longhaul.c include/linux/cpuidle.h:82:17: error: dubious one-bit signed bitfield CHECK arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c include/linux/cpuidle.h:82:17: error: dubious one-bit signed bitfield Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'async-tx-for-linus' of ↵Linus Torvalds2008-02-06
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://lost.foo-projects.org/~dwillia2/git/iop into fix * 'async-tx-for-linus' of git://lost.foo-projects.org/~dwillia2/git/iop: async_tx: allow architecture specific async_tx_find_channel implementations async_tx: replace 'int_en' with operation preparation flags async_tx: kill tx_set_src and tx_set_dest methods async_tx: kill ASYNC_TX_ASSUME_COHERENT iop-adma: use LIST_HEAD instead of LIST_HEAD_INIT async_tx: use LIST_HEAD instead of LIST_HEAD_INIT async_tx: fix compile breakage, mark do_async_xor __always_inline
| * | async_tx: allow architecture specific async_tx_find_channel implementationsDan Williams2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | The source and destination addresses are included to allow channel selection based on address alignment. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * | async_tx: replace 'int_en' with operation preparation flagsDan Williams2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pass a full set of flags to drivers' per-operation 'prep' routines. Currently the only flag passed is DMA_PREP_INTERRUPT. The expectation is that arch-specific async_tx_find_channel() implementations can exploit this capability to find the best channel for an operation. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Shannon Nelson <shannon.nelson@intel.com> Reviewed-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * | async_tx: kill tx_set_src and tx_set_dest methodsDan Williams2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The tx_set_src and tx_set_dest methods were originally implemented to allow an array of addresses to be passed down from async_xor to the dmaengine driver while minimizing stack overhead. Removing these methods allows drivers to have all transaction parameters available at 'prep' time, saves two function pointers in struct dma_async_tx_descriptor, and reduces the number of indirect branches.. A consequence of moving this data to the 'prep' routine is that multi-source routines like async_xor need temporary storage to convert an array of linear addresses into an array of dma addresses. In order to keep the same stack footprint of the previous implementation the input array is reused as storage for the dma addresses. This requires that sizeof(dma_addr_t) be less than or equal to sizeof(void *). As a consequence CONFIG_DMADEVICES now depends on !CONFIG_HIGHMEM64G. It also requires that drivers be able to make descriptor resources available when the 'prep' routine is polled. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Shannon Nelson <shannon.nelson@intel.com>
| * | async_tx: kill ASYNC_TX_ASSUME_COHERENTDan Williams2008-02-06
| |/ | | | | | | | | | | | | | | | | | | Remove the unused ASYNC_TX_ASSUME_COHERENT flag. Async_tx is meant to hide the difference between asynchronous hardware and synchronous software operations, this flag requires clients to understand cache coherency consequences of the async path. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* | Merge branch 'upstream-linus' of ↵Linus Torvalds2008-02-06
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: ata_piix.c:piix_init_one() must be __devinit sata_via.c: Remove missleading comment. libata-core: unblacklist HITACHI drives sata_nv: fix ATAPI issues with memory over 4GB (v7) ata: drivers/ata/sata_mv.c needs dmapool.h libata: kill now unused n_iter and fix sata_fsl ahci: fix CAP.NP and PI handling sata_mv: Support SoC controllers Rename: linux/pata_platform.h to linux/ata_platform.h
| * | libata: kill now unused n_iter and fix sata_fslJames Bottomley2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | qc->n_iter was used for libata's own sg walking before sg chaining replaced it. During conversion, the field and its usage in sata_fsl were left behind. Kill the filed and update sata_fsl. tj: This was part of James's libata-use-block-layer-padding patch. Separated out by me. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Li Yang <leoli@freescale.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | sata_mv: Support SoC controllersSaeed Bishara2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Marvell's Orion SoC includes SATA controllers based on Marvell's PCI-to-SATA 88SX controllers. This patch extends the libATA sata_mv driver to support those controllers. [edited to use linux/ata_platform.h -jg] Signed-off-by: Saeed Bishara <saeed@marvell.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | Rename: linux/pata_platform.h to linux/ata_platform.hJeff Garzik2008-02-06
| |/ | | | | | | Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2008-02-06
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (35 commits) virtio net: fix oops on interface-up Fix PHY Lib support for gianfar and ucc_geth forcedeth: preserve registers forcedeth: phy status fix forcedeth: restart tx/rx ipvs: Make wrr "no available servers" error message rate-limited [PPPOL2TP]: Label unused warning when CONFIG_PROC_FS is not set. [NET_SCHED]: cls_flow: support classification based on VLAN tag [VLAN]: Constify skb argument to vlan_get_tag() [NET_SCHED]: cls_flow: fix key mask validity check [NET_SCHED]: em_meta: fix compile warning b43: Fix DMA for 30/32-bit DMA engines b43: fix build with CONFIG_SSB_PCIHOST=n mac80211: Is not EXPERIMENTAL anymore iwl3945-base.c: fix off-by-one errors b43legacy: fix DMA slot resource leakage b43legacy: drop packets we are not able to encrypt b43legacy: fix suspend/resume b43legacy: fix PIO crash Generic HDLC - use random_ether_addr() ...
| * \ Merge branch 'upstream-davem' of ↵David S. Miller2008-02-06
| |\ \ | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6
| | * | Generic HDLC - remove now unneeded hdlc_device_descKrzysztof Halasa2008-02-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Removes now unneeded struct hdlc_device_desc Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | Merge branch 'fixes' of ↵David S. Miller2008-02-05
| |\ \ \ | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/linville/wireless-2.6
| | * | | b43: fix build with CONFIG_SSB_PCIHOST=nAndrew Morton2008-02-05
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | m68k allmodconfig gives drivers/net/wireless/b43/main.c:251: error: implicit declaration of function 'mmiowb' because CONFIG_B43=m, CONFIG_SSB_PCIHOST=n. Might be Kconfig bustage, but this works... Cc: Michael Buesch <mb@bu3sch.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * | | [NET_SCHED]: cls_flow: support classification based on VLAN tagPatrick McHardy2008-02-05
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | [VLAN]: Constify skb argument to vlan_get_tag()Patrick McHardy2008-02-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Required by next patch to use it from the flow classifier. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | jbd.h: hide kernel only codeOlaf Hering2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move a few kernel-only things into __KERNEL__. Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | make jbd/journal.c:__journal_abort_hard() staticAdrian Bunk2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __journal_abort_hard() can now become static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | isapnp driver semaphore to mutexDaniel Walker2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Changed the isapnp semaphore to a mutex. [akpm@linux-foundation.org: no externs-in-c] [akpm@linux-foundation.org: build fix] Signed-off-by: Daniel Walker <dwalker@mvista.com> Cc: Bjorn Helgaas <bjorn.helgaas@hp.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>
* | | | md: change ITERATE_RDEV_GENERIC to rdev_for_each_list, and remove ↵NeilBrown2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ITERATE_RDEV_PENDING. Finish ITERATE_ to for_each conversion. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | md: change ITERATE_RDEV to rdev_for_eachNeilBrown2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As this is more in line with common practice in the kernel. Also swap the args around to be more like list_for_each. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | md: allow devices to be shared between md arraysNeilBrown2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, a given device is "claimed" by a particular array so that it cannot be used by other arrays. This is not ideal for DDF and other metadata schemes which have their own partitioning concept. So for externally managed metadata, just claim the device for md in general, require that "offset" and "size" are set properly for each device, and make sure that if a device is included in different arrays then the active sections do not overlap. This involves adding another flag to the rdev which makes it awkward to set "->flags = 0" to clear certain flags. So now clear flags explicitly by name when we want to clear things. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | md: allow a maximum extent to be set for resyncingNeilBrown2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows userspace to control resync/reshape progress and synchronise it with other activities, such as shared access in a SAN, or backing up critical sections during a tricky reshape. Writing a number of sectors (which must be a multiple of the chunk size if such is meaningful) causes a resync to pause when it gets to that point. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | md: support 'external' metadata for md arraysNeilBrown2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add a state flag 'external' to indicate that the metadata is managed externally (by user-space) so important changes need to be left of user-space to handle. Alternates are non-persistant ('none') where there is no stable metadata - after the array is stopped there is no record of it's status - and internal which can be version 0.90 or version 1.x These are selected by writing to the 'metadata' attribute. - move the updating of superblocks (sync_sbs) to after we have checked if there are any superblocks or not. - New array state 'write_pending'. This means that the metadata records the array as 'clean', but a write has been requested, so the metadata has to be updated to record a 'dirty' array before the write can continue. This change is reported to md by writing 'active' to the array_state attribute. - tidy up marking of sb_dirty: - don't set sb_dirty when resync finishes as md_check_recovery calls md_update_sb when the sync thread finishes anyway. - Don't set sb_dirty in multipath_run as the array might not be dirty. - don't mark superblock dirty when switching to 'clean' if there is no internal superblock (if external, userspace can choose to update the superblock whenever it chooses to). Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | md: Update md bitmap during resync.NeilBrown2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently an md array with a write-intent bitmap does not updated that bitmap to reflect successful partial resync. Rather the entire bitmap is updated when the resync completes. This is because there is no guarentee that resync requests will complete in order, and tracking each request individually is unnecessarily burdensome. However there is value in regularly updating the bitmap, so add code to periodically pause while all pending sync requests complete, then update the bitmap. Doing this only every few seconds (the same as the bitmap update time) does not notciably affect resync performance. [snitzer@gmail.com: export bitmap_cond_end_sync] Signed-off-by: Neil Brown <neilb@suse.de> Cc: "Mike Snitzer" <snitzer@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | sm501fb: control panel pin usage with platform data flagsMagnus Damm2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes it possible to control panel pins usage with flags passed from the platform data. Without this patch the sm501fb driver always controls the VBIASEN and FPEN pins. The polarity and use of these pins are very platform specific, so this patch introduces the flags SM501FB_FLAG_PANEL_USE_VBIASEN and SM501FB_FLAG_PANEL_USE_FPEN which enable the use of these pins. This patch is needed to support the a Sharp LQ104V1DG21 lcd panel on SuperH platforms such as R2D-1 and R2D-PLUS boards. Letting the sm501fb driver control the FPEN and VBIASEN pins like today just results in lcd panel flicker. Signed-off-by: Magnus Damm <damm@igel.co.jp> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | gpio: rename pca953x symbolsGuennadi Liakhovetski2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This second part of an extension to support more pca953x chips renames the C and Kconfig symbols. All affected files were updated by sed, except for a couple of obvious exceptions. It also updates the Kconfig helptext. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.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>
* | | | gpio: rename pca9539 driverGuennadi Liakhovetski2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | First part of an extension to let the pca9539 driver support more chips, starting with pca9534, pca9535, pca9536, pca9537, and pca9538. This renames the files and modifies the Makefile. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.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>
* | | | w1-gpio: add GPIO w1 bus master driverVille Syrjala2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a GPIO 1-wire bus master driver. The driver used the GPIO API to control the wire and the GPIO pin can be specified using platform data similar to i2c-gpio. The driver was tested with AT91SAM9260 + DS2401. Signed-off-by: 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>
* | | | kprobes: kretprobe user entry-handlerAbhishek Sagar2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Provide support to add an optional user defined callback to be run at function entry of a kretprobe'd function. Also modify the kprobe smoke tests to include an entry-handler during the kretprobe sanity test. Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Acked-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | system timer: fix crash in <100Hz system timerDavid Fries2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kernel has a divide by zero crash when trying to run the system timer less than 100Hz. The problem is x/(HZ/USER_HZ) and related. Now x*(USER_HZ/HZ) will be used if HZ<USER_HZ. I'm running the Linux kernel under qemu and went to run a slower system timer to take less CPU (and battery) on the host. I found that the kernel paniced under emulation because of a divide by zero in three places. Here is the patch. The base git was updated today 01-05-2008. I went for a 20Hz system time by adding config HZ_20 etc to kernel/Kconfig.hz. With this patch I verified the system timer by looking at /proc/interrupts. [akpm@linux-foundation.org: partially clean up the macro maze] Signed-off-by: David Fries <david@fries.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | kernel/sys.c: get rid of expensive divides in groups_sort()Eric Dumazet2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | groups_sort() can be quite long if user loads a large gid table. This is because GROUP_AT(group_info, some_integer) uses an integer divide. So having to do XXX thousand divides during one syscall can lead to very high latencies. (NGROUPS_MAX=65536) In the past (25 Mar 2006), an analog problem was found in groups_search() (commit d74beb9f33a5f16d2965f11b275e401f225c949d ) and at that time I changed some variables to unsigned int. I believe that a more generic fix is to make sure NGROUPS_PER_BLOCK is unsigned. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | parport: add support for the Quatech SPPXP-100 Parallel port PCI ExpressCardLuís P Mendes2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added pci device id for the Quatech SPPXP-100 ExpressCard - 0x278 - to include/linux/pci_id.h Modified drivers/parport/parport_pc.c to support the Quatech SPPXP-100 Parallel port PCI ExpressCard [akpm@linux-foundation.org: build fix] Signed-off-by: Luís P Mendes <luis.p.mendes@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Add arch_ptrace_stopRoland McGrath2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds support to allow asm/ptrace.h to define two new macros, arch_ptrace_stop_needed and arch_ptrace_stop. These control special machine-specific actions to be done before a ptrace stop. The new code compiles away to nothing when the new macros are not defined. This is the case on all machines to begin with. On ia64, these macros will be defined to solve the long-standing issue of ptrace vs register backing store. Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Petr Tesarik <ptesarik@suse.cz> Cc: Tony Luck <tony.luck@intel.com> Cc: Matthew Wilcox <willy@debian.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | drivers/isdn/i4l/isdn_tty.c: remove write_semDaniel Walker2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I couldn't find any users, so removing it.. Signed-off-by: Daniel Walker <dwalker@mvista.com> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | drivers/char/tty_io.c: remove pty_semDaniel Walker2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I couldn't find any users, so removing it.. Signed-off-by: Daniel Walker <dwalker@mvista.com> Acked-by: Alan Cox <alan@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Remove rcu_assign_pointer() penalty for NULL pointersPaul E. McKenney2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rcu_assign_pointer() primitive currently unconditionally executes a memory barrier, even when a NULL pointer is being assigned. This has lead some to avoid using rcu_assign_pointer() for NULL pointers, which loses the self-documenting advantages of rcu_assign_pointer() This patch uses __builtin_const_p() to omit needless memory barriers for NULL-pointer assignments at compile time with no runtime penalty, as discussed in the following thread: http://www.mail-archive.com/netdev@vger.kernel.org/msg54852.html Tested on x86_64 and ppc64, also compiled the four cases (NULL/non-NULL and const/non-const) with gcc version 4.1.2, and hand-checked the assembly output. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | get rid of NR_OPEN and introduce a sysctl_nr_openEric Dumazet2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | NR_OPEN (historically set to 1024*1024) actually forbids processes to open more than 1024*1024 handles. Unfortunatly some production servers hit the not so 'ridiculously high value' of 1024*1024 file descriptors per process. Changing NR_OPEN is not considered safe because of vmalloc space potential exhaust. This patch introduces a new sysctl (/proc/sys/fs/nr_open) wich defaults to 1024*1024, so that admins can decide to change this limit if their workload needs it. [akpm@linux-foundation.org: export it for sparc64] Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | inotify: send IN_ATTRIB events when link count changesJan Kara2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, no notification event has been sent when inode's link count changed. This is inconvenient for the application in some cases: Suppose you have the following directory structure foo/test bar/ and you watch test. If someone does "mv foo/test bar/", you get event IN_MOVE_SELF and you know something has happened with the file "test". However if someone does "ln foo/test bar/test" and "rm foo/test" you get no inotify event for the file "test" (only directories "foo" and "bar" receive events). Furthermore it could be argued that link count belongs to file's metadata and thus IN_ATTRIB should be sent when it changes. The following patch implements sending of IN_ATTRIB inotify events when link count of the inode changes, i.e., when a hardlink to the inode is created or when it is removed. This event is sent in addition to all the events sent so far. In particular, when a last link to a file is removed, IN_ATTRIB event is sent in addition to IN_DELETE_SELF event. Signed-off-by: Jan Kara <jack@suse.cz> Acked-by: Morten Welinder <mwelinder@gmail.com> Cc: Robert Love <rlove@google.com> Cc: John McCutchan <ttb@tentacle.dhs.org> Cc: Steven French <sfrench@us.ibm.com> Cc: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | fs: use list_for_each_entry_reverse and kill sb_entryAkinobu Mita2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use list_for_each_entry_reverse for super_blocks list and remove unused sb_entry macro. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Avoid divide in IS_ALIGNHerbert Xu2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I was happy to discover the brand new IS_ALIGN macro and quickly used it in my code. To my dismay I found that the generated code used division to perform the test. This patch fixes it by changing the % test to an &. This avoids the division. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | PERCPU : __percpu_alloc_mask() can dynamically size percpu_data storageEric Dumazet2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of allocating a fix sized array of NR_CPUS pointers for percpu_data, we can use nr_cpu_ids, which is generally < NR_CPUS. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Document I_SYNC and I_DATASYNCJoern Engel2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After some archeology (see http://logfs.org/logfs/inode_state_bits) I finally figured out what the three I_DIRTY bits do. Maybe others would prefer less effort to reach this insight. Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | fs: remove dead config CONFIG_HAS_COMPAT_EPOLL_EVENT symbolJiri Olsa2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove dead config CONFIG_HAS_COMPAT_EPOLL_EVENT symbol. Signed-off-by: Jiri Olsa <olsajiri@gmail.com> Cc: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | log2.h: Define order_base_2() macro for convenience.Robert P. J. Day2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Given a number of places in the tree that need to calculate this value explicitly, might as well just create a macro for it. (akpm: must be implemented as a macro for callee typeof() usage) Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | proper prototype for vty_init()Adrian Bunk2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a proper prototype for vty_init() in include/linux/vt_kern.h Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | proper prototype for get_filesystem_list()Adrian Bunk2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ad a proper prototype for migration_init() in include/linux/fs.h Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>