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2007-07-18locks: provide a file lease method enabling cluster-coherent leasesJ. Bruce Fields
Currently leases are only kept locally, so there's no way for a distributed filesystem to enforce them against multiple clients. We're particularly interested in the case of nfsd exporting a cluster filesystem, in which case nfsd needs cluster-coherent leases in order to implement delegations correctly. Also add some documentation. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2007-07-18locks: rename lease functions to reflect locks.c conventionsJ. Bruce Fields
We've been using the convention that vfs_foo is the function that calls a filesystem-specific foo method if it exists, or falls back on a generic method if it doesn't; thus vfs_foo is what is called when some other part of the kernel (normally lockd or nfsd) wants to get a lock, whereas foo is what filesystems call to use the underlying local functionality as part of their lock implementation. So rename setlease to vfs_setlease (which will call a filesystem-specific setlease after a later patch) and __setlease to setlease. Also, vfs_setlease need only be GPL-exported as long as it's only needed by lockd and nfsd. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
2007-07-18locks: share more common lease codeJ. Bruce Fields
Share more code between setlease (used by nfsd) and fcntl. Also some minor cleanup. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Acked-by: Christoph Hellwig <hch@infradead.org>
2007-07-18locks: clean up lease_alloc()J. Bruce Fields
Return the newly allocated structure as the return value instead of using a struct ** parameter. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2007-07-18locks: convert an -EINVAL return to a BUGJ. Bruce Fields
There's no point trying to return an error in these cases, which all represent bugs in the callers. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2007-07-18leases: minor break_lease() comment clarificationdavid m. richter
clarify that break_lease() checks for presence of any lock, not just leases. Signed-off-by: David M. Richter <richterd@citi.umich.edu> Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
2007-07-18zs: move to the serial subsystemMaciej W. Rozycki
This is a reimplementation of the zs driver for the serial subsystem. Any resemblance to the old driver is purely coincidential. ;-) I do hope I got the handling of modem lines right -- better do not tackle me about the issue unless you feel too good... Any users of the old driver: please note the numbers of the serial lines have now been swapped, i.e. ttyS0 <-> ttyS1 and ttyS2 <-> ttyS3. It has to do with the modem lines mentioned above; basically the port A in a given chip has to be initialised before the port B if you want to use the latter as the serial console (which is usually the case), as operations on modem lines of the serial line associated with the port B access both ports (see the comment at the top of the driver for the details of wiring used). Please update your scripts. This is also the reason each SCC now requests an IRQ once only (as seen in "/proc/interrupts") -- the handler takes care of both ports at once as the line associated with the port B has to take status update interrupts from both ports (and yet the line of the port A takes its own for itself too). The old driver never got it right... Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> 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>
2007-07-18serial: add early_serial_setup() back to header fileYinghai Lu
early_serial_setup was removed from serial.h, but forgot to put in serial_8250.h Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-18fbdev: make fb_append_extra_logo() depend on fb=yArnd Bergmann
We can't show the extra logo from boot code if FB is built as a module. Make the FB_LOGO_EXTRA depend on FB=y. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: "Antonino A. Daplas" <adaplas@pol.net> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-18dm: fix memory leak in dm_create_persistent() when starting metadata update ↵Jesper Juhl
thread fails If, in dm_create_persistent(), the call to create_singlethread_workqueue() fails then we'll return without freeing the memory allocated to 'ps', thus leaking sizeof(struct pstore) bytes. This patch fixes the leak. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com Acked-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17slob: Kill off duplicate kzalloc() definition.Paul Mundt
With the slab zeroing allocations cleanups Christoph stubbed in a generic kzalloc(), which was missed on SLOB. Follow the SLAB/SLUB changes and kill off the __kzalloc() wrapper that SLOB was using. Reported-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17Revert drivers/ide/ide.c scsi_cmd_ioctl() usage changesLinus Torvalds
The old IDE driver is not ready to take generic SCSI commands, even if it uses them for some specific issues (ie the tray open/close ioctls for IDE CD-ROM's). Pointed out by Bartlomiej. I'm sure we'll have it fixed properly soon enough, but for now we should not allow it to cause problems. Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17Make the "z/VM unit record device driver" depend on S390Linus Torvalds
I really don't see anybody else wanting to select it ;) Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] Fix broken logic, SIGA flags must be bitwise ORed [S390] cio: Dont print trailing \0 in modalias_show(). [S390] Simplify stack trace. [S390] z/VM unit record device driver [S390] vmcp cleanup [S390] qdio: output queue stall on FCP and network devices [S390] Fix disassembly of RX_URRD, SI_URD & PC-relative instructions. [S390] Update default configuration.
2007-07-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: (21 commits) [WATCHDOG] at32ap700x_wdt.c - Fix compilation warnings [WATCHDOG] at32ap700x_wdt.c - Add spinlock support [WATCHDOG] at32ap700x_wdt.c - Add nowayout + MAGICCLOSE features [WATCHDOG] at32ap700x_wdt.c - timeout module parameter patch [WATCHDOG] at32ap700x_wdt.c - checkpatch.pl-0.05 clean-up's [WATCHDOG] change s3c2410_wdt to using dev_() macros for output [WATCHDOG] s3c2410_wdt announce initialisation [WATCHDOG] at32ap700x-wdt: add iounmap if probe function fails [WATCHDOG] at32ap700x-wdt: add missing iounmap in _remove [WATCHDOG] watchdog-driver-for-at32ap700x-devices-fix-2 [WATCHDOG] watchdog-driver-for-at32ap700x-devices-fix [WATCHDOG] Watchdog driver for AT32AP700X devices [WATCHDOG] Mixcom Watchdog - CodingStyle clean-up [WATCHDOG] Mixcom Watchdog - clean-up printk's [WATCHDOG] Mixcom Watchdog - clean-up printk's [WATCHDOG] Mixcom Watchdog - checkcard part 2 [WATCHDOG] Mixcom Watchdog - checkcard [WATCHDOG] Mixcom Watchdog - get rid of port offset's [WATCHDOG] Mixcom Watchdog - update "Documentation" [WATCHDOG] Remove the redundant check for pwrite() in EP93XXX watchdog. ...
2007-07-17Merge branch 'bsg' of git://git.kernel.dk/data/git/linux-2.6-blockLinus Torvalds
* 'bsg' of git://git.kernel.dk/data/git/linux-2.6-block: bsg: fix missing space in version print Don't define empty struct bsg_class_device if !CONFIG_BLK_DEV_BSG bsg: Kconfig updates bsg: minor cleanup bsg: device hash table cleanup bsg: fix initialization error handling bugs bsg: mark FUJITA Tomonori as bsg maintainer bsg: convert to dynamic major bsg: address various review comments
2007-07-17Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: 9p: fix debug compilation error
2007-07-17Merge branch 'isdn-cleanup' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6 * 'isdn-cleanup' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6: [ISDN] HiSax hfc_pci: minor cleanups [ISDN] HiSax bkm_a4t: split setup into two smaller functions [ISDN] HiSax enternow: split setup into 3 smaller functions [ISDN] HiSax netjet_u: split setup into 3 smaller functions [ISDN] HiSax netjet_s: code movement, prep for hotplug [ISDN] HiSax: move card state alloc/setup code into separate functions [ISDN] HiSax: move card setup into separate function
2007-07-17Merge branch 'master' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Kill bogus set_fs(KERNEL_DS) in do_rt_sigreturn(). [SPARC64]: Update defconfig. [SPARC64]: Kill explicit %gl register reference.
2007-07-17Merge branch 'uninit-var' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6 * 'uninit-var' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6: arch/i386/* fs/* ipc/*: mark variables with uninitialized_var() drivers/*: mark variables with uninitialized_var()
2007-07-17Merge branch 'warnings' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6 * 'warnings' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6: drivers/atm/ambassador: kill uninit'd var warning, and fix bug [libata] sata_mv: use pci_try_set_mwi() drivers/infiniband/hw/mthca/mthca_qp: kill uninit'd var warning drivers/net/wan/sbni: kill uninit'd var warning drivers/mtd/ubi/eba: minor cleanup: tighten scope of a local var drivers/telephony/ixj: cleanup and fix gcc warning drivers/net/wan/pc300_drv: fix bug caught by gcc warning drivers/usb/misc/auerswald: fix status check, remove redundant check [netdrvr] eepro100, ne2k-pci: abort resume if pci_enable_device() fails [netdrvr] natsemi: Fix device removal bug kernel/auditfilter: kill bogus uninit'd-var compiler warning
2007-07-17smp_call_function_single() should be a macro on UPAl Viro
... or we end up with header include order problems from hell. E.g. on m68k this is 100% fatal - local_irq_enable() there wants preempt_count(), which wants task_struct fields, which we won't have when we are in smp.h pulled from sched.h. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17[SPARC64]: Kill bogus set_fs(KERNEL_DS) in do_rt_sigreturn().Oleg Nesterov
From: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-17[ISDN] HiSax hfc_pci: minor cleanupsJeff Garzik
* trim trailing whitespace * remove CONFIG_PCI ifdefs, this driver is always PCI (Kconfig enforced) * remove return statements at the tail of a function * remove indentation levels by returning an error code immediately. Makes the code much more readable, and easier to update to PCI hotplug API. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17[ISDN] HiSax bkm_a4t: split setup into two smaller functionsJeff Garzik
No behavior changes, just code movement. Prep for PCI hotplug API. Well, CONFIG_PCI useless ifdef was removed. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17[ISDN] HiSax enternow: split setup into 3 smaller functionsJeff Garzik
No behavior changes, just code movement. Prep for PCI hotplug API. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17[ISDN] HiSax netjet_u: split setup into 3 smaller functionsJeff Garzik
No behavior changes, just code movement. Prep for PCI hotplug API. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17[ISDN] HiSax netjet_s: code movement, prep for hotplugJeff Garzik
1) Remove CONFIG_PCI ifdefs. PCI is required in Kconfig. 2) Break up setup_netjet_s() into three separate internal functions. This helps facilitate upcoming use of PCI hotplug API, and in addition makes the code much easier to follow. No code is changed, just moved around. I even kept the out-of-favor "return(0)" style used in the current source code. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17[ISDN] HiSax: move card state alloc/setup code into separate functionsJeff Garzik
Just code movement. No code changes or cleanups besides that which is required to call the new functions from the old code site. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17[ISDN] HiSax: move card setup into separate functionJeff Garzik
No behavior changes, just code movement. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17mixart: Add missing vmalloc.h includeFrank Lichtenheld
Fixes the following build error: CC sound/pci/mixart/mixart_hwdep.o sound/pci/mixart/mixart_hwdep.c: In function ‘mixart_hwdep_dsp_load’: sound/pci/mixart/mixart_hwdep.c:610: error: implicit declaration of function ‘vmalloc’ sound/pci/mixart/mixart_hwdep.c:617: error: implicit declaration of function ‘vfree’ Signed-off-by: Frank Lichtenheld <frank@lichtenheld.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17hppb: Add missing dma-mapping.h includeFrank Lichtenheld
This fixes the following build-error: CC drivers/parisc/hppb.o drivers/parisc/hppb.c: In function ‘hppb_probe’: drivers/parisc/hppb.c:73: error: implicit declaration of function ‘ccio_request_resource’ Signed-off-by: Frank Lichtenheld <frank@lichtenheld.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17arch/i386/* fs/* ipc/*: mark variables with uninitialized_var()Jeff Garzik
Mark variables with uninitialized_var() if such a warning appears, and analysis proves that the var is initialized properly on all paths it is used. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17drivers/*: mark variables with uninitialized_var()Jeff Garzik
Mark variables in drivers/* with uninitialized_var() if such a warning appears, and analysis proves that the var is initialized properly on all paths it is used. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17drivers/atm/ambassador: kill uninit'd var warning, and fix bugJeff Garzik
An uninitialized variable warning illuminated an area where indeed the variable was being used without initialization. Unfortunately, after verifying all such paths were fixed, the warning still appears. So we follow the initialization practice of other variables in this function. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17[libata] sata_mv: use pci_try_set_mwi()Jeff Garzik
Because sometimes in life, it's ok to fail. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17drivers/infiniband/hw/mthca/mthca_qp: kill uninit'd var warningJeff Garzik
drivers/infiniband/hw/mthca/mthca_qp.c: In function ‘mthca_tavor_post_send’: drivers/infiniband/hw/mthca/mthca_qp.c:1594: warning: ‘f0’ may be used uninitialized in this function drivers/infiniband/hw/mthca/mthca_qp.c: In function ‘mthca_arbel_post_send’: drivers/infiniband/hw/mthca/mthca_qp.c:1949: warning: ‘f0’ may be used uninitialized in this function Initializing 'f0' is not strictly necessary in either case, AFAICS. I was considering use of uninitialized_var(), but looking at the complex flow of control in each function, I feel it is wiser and safer to simply zero the var and be certain of ourselves. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17drivers/net/wan/sbni: kill uninit'd var warningJeff Garzik
It's actually convenient in the code to initialize this and a sister variable to zero. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17drivers/mtd/ubi/eba: minor cleanup: tighten scope of a local varJeff Garzik
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17drivers/telephony/ixj: cleanup and fix gcc warningJeff Garzik
1) Fix gcc uninit'd var warnings by adding 'default' switch stmt labels in two cases. It was lightning-strikes unlikely that a problem would ever arise, but not impossible. 2) Tighten the scope of 'blankword' in two cases. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17drivers/net/wan/pc300_drv: fix bug caught by gcc warningJeff Garzik
The warning drivers/net/wan/pc300_drv.c: In function ‘cpc_open’: drivers/net/wan/pc300_drv.c:2942: warning: ‘br’ may be used uninitialized in this function was valid. Ensure 'br' is initialized in all cases. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17drivers/usb/misc/auerswald: fix status check, remove redundant checkJeff Garzik
1) We should only set 'actual_length' output variable if usb length is known to be good. 2) No need to check actual_length for NULL. The only caller always passes non-NULL value. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17[netdrvr] eepro100, ne2k-pci: abort resume if pci_enable_device() failsJeff Garzik
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17[netdrvr] natsemi: Fix device removal bugJeff Garzik
This episode illustrates how an overused warning can train people to ignore that warning, which winds up hiding bugs. The warning drivers/net/natsemi.c: In function ‘natsemi_remove1’: drivers/net/natsemi.c:3222: warning: ignoring return value of ‘device_create_file’, declared with attribute warn_unused_result is oft-ignored, even though at close inspection one notices this occurs in the /remove/ function, not normally where creation occurs. A quick s/create/remove/ and we are fixed, with the warning gone. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17kernel/auditfilter: kill bogus uninit'd-var compiler warningJeff Garzik
Kill this warning... kernel/auditfilter.c: In function ‘audit_receive_filter’: kernel/auditfilter.c:1213: warning: ‘ndw’ may be used uninitialized in this function kernel/auditfilter.c:1213: warning: ‘ndp’ may be used uninitialized in this function ...with a simplification of the code. audit_put_nd() can accept NULL arguments, just like kfree(). It is cleaner to init two existing vars to NULL, remove the redundant test variable 'putnd_needed' branches, and call audit_put_nd() directly. As a desired side effect, the warning goes away. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17[SPARC64]: Update defconfig.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-17[SPARC64]: Kill explicit %gl register reference.David S. Miller
Older binutils can't handle it. Use SET_GL() instead, which is explicitly for this purpose. Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-17Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid checkSatyam Sharma
Introduce is_owner_or_cap() macro in fs.h, and convert over relevant users to it. This is done because we want to avoid bugs in the future where we check for only effective fsuid of the current task against a file's owning uid, without simultaneously checking for CAP_FOWNER as well, thus violating its semantics. [ XFS uses special macros and structures, and in general looked ... untouchable, so we leave it alone -- but it has been looked over. ] The (current->fsuid != inode->i_uid) check in generic_permission() and exec_permission_lite() is left alone, because those operations are covered by CAP_DAC_OVERRIDE and CAP_DAC_READ_SEARCH. Similarly operations falling under the purview of CAP_CHOWN and CAP_LEASE are also left alone. Signed-off-by: Satyam Sharma <ssatyam@cse.iitk.ac.in> Cc: Al Viro <viro@ftp.linux.org.uk> Acked-by: Serge E. Hallyn <serge@hallyn.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: (80 commits) KVM: Use CPU_DYING for disabling virtualization KVM: Tune hotplug/suspend IPIs KVM: Keep track of which cpus have virtualization enabled SMP: Allow smp_call_function_single() to current cpu i386: Allow smp_call_function_single() to current cpu x86_64: Allow smp_call_function_single() to current cpu HOTPLUG: Adapt thermal throttle to CPU_DYING HOTPLUG: Adapt cpuset hotplug callback to CPU_DYING HOTPLUG: Add CPU_DYING notifier KVM: Clean up #includes KVM: Remove kvmfs in favor of the anonymous inodes source KVM: SVM: Reliably detect if SVM was disabled by BIOS KVM: VMX: Remove unnecessary code in vmx_tlb_flush() KVM: MMU: Fix Wrong tlb flush order KVM: VMX: Reinitialize the real-mode tss when entering real mode KVM: Avoid useless memory write when possible KVM: Fix x86 emulator writeback KVM: Add support for in-kernel pio handlers KVM: VMX: Fix interrupt checking on lightweight exit KVM: Adds support for in-kernel mmio handlers ...
2007-07-17Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Clean away some code inside some non-existent CONFIG ifdefs [IA64] ar.itc access must really be after xtime_lock.sequence has been read [IA64] correctly count CPU objects in the ia64/sn hwperf interface [IA64] arbitary speed tty ioctl support [IA64] use machvec=dig on hpzx1 platforms
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