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2008-07-03Merge branch 'for-bfields' of git://linux-nfs.org/~tomtucker/xprt-switch-2.6 ↵J. Bruce Fields
into for-2.6.27
2008-07-02nfsd: dprint operation namesBenny Halevy
Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-07-02svcrdma: Change WR context get/put to use the kmem cacheTom Tucker
Change the WR context pool to be shared across mount points. This reduces the RDMA transport memory footprint significantly since idle mounts don't consume WR context memory. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Create a kmem cache for the WR contextsTom Tucker
Create a kmem cache to hold WR contexts. Next we will convert the WR context get and put services to use this kmem cache. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Add flush_scheduled_work to module exit functionTom Tucker
Make certain all transports pending free are flushed from the wq before unloading the module. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Limit ORD based on client's advertised IRDTom Tucker
When adapters have differing IRD limits, the RDMA transport will fail to connect properly. The RDMA transport should use the client's advertised inbound read limit when computing its outbound read limit. For iWARP transports, there is currently no standard for exchanging IRD/ORD during connection establishment so the 'responder_resources' field in the connect event is the local device's limit. The RDMA transport can be configured to use a smaller ORD by writing the desired number to the /proc/sys/sunrpc/svc_rdma/max_outbound_read_requests file. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Remove unused wait q from svcrdma_xprt structureTom Tucker
The sc_read_wait queue head is no longer used. Remove it. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Remove unneeded spin locks from __svc_rdma_freeTom Tucker
At the time __svc_rdma_free is called, we are guaranteed that all references to this transport are gone. There is, therefore, no need to protect the resource lists with a spin lock. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Add dma map count and WARN_ONTom Tucker
Add a dma map count in order to verify that all DMA mapping resources have been freed when the transport is closed. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Move the DMA unmap logic to the CQ handlerTom Tucker
Separate DMA unmap from context destruction and perform DMA unmapping in the SQ/RQ CQ reap functions. This is necessary to support software based RDMA implementations that actually copy the data in their ib_dma_unmap callback functions and architectures that don't have cache coherent I/O busses. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Use reply and chunk map for RDMA_READ processingTom Tucker
Modify the RDMA_READ processing to use the reply and chunk list mapping data types. Also add a special purpose 'hdr_count' field in in the context to hold the header page count instead of overloading the SGE length field and corrupting the DMA map length. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Use RPC reply map for RDMA_WRITE processingTom Tucker
Use the new svc_rdma_req_map data type for mapping the client side memory to the server side memory. Move the DMA mapping to the context pointed to by each WR individually so that it is unmapped after the WR completes. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Add a type for keeping NFS RPC mappingTom Tucker
Create a new data structure to hold the remote client address space to local server address space mapping. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02nfsd: nfs4 minorversion decoder vectorsBenny Halevy
Have separate vectors of operation decoders for each minorversion. Obsolete ops in newer minorversions have default implementation returning nfserr_opnotsupp. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-07-02nfsd: unsupported nfs4 ops should fail with nfserr_opnotsuppBenny Halevy
nfserr_opnotsupp should be returned for unsupported nfs4 ops rather than nfserr_op_illegal. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-07-02nfsd: tabulate nfs4 xdr decoding functionsBenny Halevy
In preparation for minorversion 1 Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-07-02nfsd: return nfserr_minor_vers_mismatch when compound minorversion != 0Benny Halevy
Check minorversion once before decoding any operation and reject with nfserr_minor_vers_mismatch if != 0 (this still happens in nfsd4_proc_compound). In this case return a zero length resultdata array as required by RFC3530. minorversion 1 processing will have its own vector of decoders. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-07-01nfsd: clean up mnt_want_write callsMiklos Szeredi
Multiple mnt_want_write() calls in the switch statement looks really ugly. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-06-30nfsd: treat all shutdown signals as equivalentJeff Layton
knfsd currently uses 2 signal masks when processing requests. A "loose" mask (SHUTDOWN_SIGS) that it uses when receiving network requests, and then a more "strict" mask (ALLOWED_SIGS, which is just SIGKILL) that it allows when doing the actual operation on the local storage. This is apparently unnecessarily complicated. The underlying filesystem should be able to sanely handle a signal in the middle of an operation. This patch removes the signal mask handling from knfsd altogether. When knfsd is started as a kthread, all signals are ignored. It then allows all of the signals in SHUTDOWN_SIGS. There's no need to set the mask as well. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-06-30nfs: rewrap NFS/RDMA documentation to 80 linesJ. Bruce Fields
Wrap long lines. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-06-30update NFS/RDMA documentationJames Lentini
Update the NFS/RDMA documentation to clarify how to run mount.nfs. Signed-off-by: James Lentini <jlentini@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-06-30nfsd: fix spurious EACCESS in reconnect_path()Neil Brown
Thanks to Frank Van Maarseveen for the original problem report: "A privileged process on an NFS client which drops privileges after using them to change the current working directory, will experience incorrect EACCES after an NFS server reboot. This problem can also occur after memory pressure on the server, particularly when the client side is quiet for some time." This occurs because the filehandle points to a directory whose parents are no longer in the dentry cache, and we're attempting to reconnect the directory to its parents without adequate permissions to perform lookups in the parent directories. We can therefore fix the problem by acquiring the necessary capabilities before attempting the reconnection. We do this only in the no_subtree_check case, since the documented behavior of the subtree_check export option requires the server to check that the user has lookup permissions on all parents. The subtree_check case still has a problem, since reconnect_path() unnecessarily requires both read and lookup permissions on all parent directories. However, a fix in that case would be more delicate, and use of subtree_check is already discouraged for other reasons. Signed-off-by: Neil Brown <neilb@suse.de> Cc: Frank van Maarseveen <frankvm@frankvm.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-06-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: fix locking in force-feedback core Input: add KEY_MEDIA_REPEAT definition
2008-06-30Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: debugobjects: fix lockdep warning
2008-06-30Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: fix cpu hotplug
2008-06-30Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
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: ptrace GET/SET FPXREGS broken x86: fix cpu hotplug crash x86: section/warning fixes x86: shift bits the right way in native_read_tscp
2008-06-30Input: fix locking in force-feedback coreDmitry Torokhov
The newly added event_lock spinlock in the input core disallows sleeping and therefore using mutexes in event handlers. Convert force-feedback core to rely on event_lock instead of mutex to protect slots allocated for fore-feedback effects. The original mutex is still used to serialize uploading and erasing of effects. Reported-by: Anssi Hannula <anssi.hannula@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-06-30Input: add KEY_MEDIA_REPEAT definitionBastien Nocera
This patch adds the Repeat key to the input layer. The usage in the HUT is 0xBC (listed under "15.7 Transport Controls"). Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-06-30ptrace GET/SET FPXREGS brokenTAKADA Yoshihito
When I update kernel 2.6.25 from 2.6.24, gdb does not work. On 2.6.25, ptrace(PTRACE_GETFPXREGS, ...) returns ENODEV. But 2.6.24 kernel's ptrace() returns EIO. It is issue of compatibility. I attached test program as pt.c and patch for fix it. #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <signal.h> #include <errno.h> #include <sys/ptrace.h> #include <sys/types.h> struct user_fxsr_struct { unsigned short cwd; unsigned short swd; unsigned short twd; unsigned short fop; long fip; long fcs; long foo; long fos; long mxcsr; long reserved; long st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */ long xmm_space[32]; /* 8*16 bytes for each XMM-reg = 128 bytes */ long padding[56]; }; int main(void) { pid_t pid; pid = fork(); switch(pid){ case -1:/* error */ break; case 0:/* child */ child(); break; default: parent(pid); break; } return 0; } int child(void) { ptrace(PTRACE_TRACEME); kill(getpid(), SIGSTOP); sleep(10); return 0; } int parent(pid_t pid) { int ret; struct user_fxsr_struct fpxregs; ret = ptrace(PTRACE_GETFPXREGS, pid, 0, &fpxregs); if(ret < 0){ printf("%d: %s.\n", errno, strerror(errno)); } kill(pid, SIGCONT); wait(pid); return 0; } /* in the kerel, at kernel/i387.c get_fpxregs() */ Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-30x86: fix cpu hotplug crashZhang, Yanmin
Vegard Nossum reported crashes during cpu hotplug tests: http://marc.info/?l=linux-kernel&m=121413950227884&w=4 In function _cpu_up, the panic happens when calling __raw_notifier_call_chain at the second time. Kernel doesn't panic when calling it at the first time. If just say because of nr_cpu_ids, that's not right. By checking the source code, I found that function do_boot_cpu is the culprit. Consider below call chain: _cpu_up=>__cpu_up=>smp_ops.cpu_up=>native_cpu_up=>do_boot_cpu. So do_boot_cpu is called in the end. In do_boot_cpu, if boot_error==true, cpu_clear(cpu, cpu_possible_map) is executed. So later on, when _cpu_up calls __raw_notifier_call_chain at the second time to report CPU_UP_CANCELED, because this cpu is already cleared from cpu_possible_map, get_cpu_sysdev returns NULL. Many resources are related to cpu_possible_map, so it's better not to change it. Below patch against 2.6.26-rc7 fixes it by removing the bit clearing in cpu_possible_map. Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com> Tested-by: Vegard Nossum <vegard.nossum@gmail.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvbLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (42 commits) V4L/DVB (8108): Fix open/close race in saa7134 V4L/DVB (8100): V4L/vivi: fix possible memory leak in vivi_fillbuff V4L/DVB (8097): xc5000: check device hardware state to determine if firmware download is needed V4L/DVB (8096): au8522: prevent false-positive lock status V4L/DVB (8092): videodev: simplify and fix standard enumeration V4L/DVB (8075): stv0299: Uncorrected block count and bit error rate fixed V4L/DVB (8074): av7110: OSD transfers should not be interrupted V4L/DVB (8073): av7110: Catch another type of ARM crash V4L/DVB (8071): tda10023: Fix possible kernel oops during initialisation V4L/DVB (8069): cx18: Fix S-Video and Compsite inputs for the Yuan MPC718 and enable card entry V4L/DVB (8068): cx18: Add I2C slave reset via GPIO upon initialization V4L/DVB (8067): cx18: Fix firmware load for case when digital capture happens first V4L/DVB (8066): cx18: Fix audio mux input definitions for HVR-1600 Line In 2 and FM radio V4L/DVB (8063): cx18: Fix unintended auto configurations in cx18-av-core V4L/DVB (8061): cx18: only select tuner / frontend modules if !DVB_FE_CUSTOMISE V4L/DVB (8048): saa7134: Fix entries for Avermedia A16d and Avermedia E506 V4L/DVB (8044): au8522: tuning optimizations V4L/DVB (8043): au0828: add support for additional USB device id's V4L/DVB (8042): DVB-USB UMT-010 channel scan oops V4L/DVB (8040): soc-camera: remove soc_camera_host_class class ...
2008-06-29Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: dock: bay: Don't call acpi_walk_namespace() when ACPI is disabled. ACPI: don't walk tables if ACPI was disabled thermal: Create CONFIG_THERMAL_HWMON=n
2008-06-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: kbuild: fix a.out.h export to userspace with O= build.
2008-06-29Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: firewire: fw-sbp2: fix parsing of logical unit directories
2008-06-29Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6: udf: Fix regression in UDF anchor block detection
2008-06-29Fix and clean top .gitignoreEduard - Gabriel Munteanu
Removed vmlinux* rule because it matches too many useful files, replacing it with rules matching filetype by filename (e.g. *.gz). Also unignored .mailmap from the top directory. Added a comment telling the user how to check for tracked files being ignored. Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-29Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: Blackfin arch: fix up section mismatch warning Blackfin arch: fix bug - kernel boot fails when Spinlock and rw-lock debugging enabled
2008-06-29Merge branch 'audit.b52' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current * 'audit.b52' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: [PATCH] remove useless argument type in audit_filter_user() [PATCH] audit: fix kernel-doc parameter notation [PATCH] kernel/audit.c: nlh->nlmsg_type is gotten more than once
2008-06-29Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: [patch 2/3] vfs: dcache cleanups [patch 1/3] vfs: dcache sparse fixes [patch 3/3] vfs: make d_path() consistent across mount operations [patch 4/4] flock: remove unused fields from file_lock_operations [patch 3/4] vfs: fix ERR_PTR abuse in generic_readlink [patch 2/4] fs: make struct file arg to d_path const [patch 1/4] vfs: path_{get,put}() cleanups [patch for 2.6.26 4/4] vfs: utimensat(): fix write access check for futimens() [patch for 2.6.26 3/4] vfs: utimensat(): fix error checking for {UTIME_NOW,UTIME_OMIT} case [patch for 2.6.26 1/4] vfs: utimensat(): ignore tv_sec if tv_nsec == UTIME_OMIT or UTIME_NOW [patch for 2.6.26 2/4] vfs: utimensat(): be consistent with utime() for immutable and append-only files [PATCH] fix cgroup-inflicted breakage in block_dev.c
2008-06-29sched: fix cpu hotplugDmitry Adamushko
the CPU hotplug problems (crashes under high-volume unplug+replug tests) seem to be related to migrate_dead_tasks(). Firstly I added traces to see all tasks being migrated with migrate_live_tasks() and migrate_dead_tasks(). On my setup the problem pops up (the one with "se == NULL" in the loop of pick_next_task_fair()) shortly after the traces indicate that some has been migrated with migrate_dead_tasks()). btw., I can reproduce it much faster now with just a plain cpu down/up loop. [disclaimer] Well, unless I'm really missing something important in this late hour [/desclaimer] pick_next_task() is not something appropriate for migrate_dead_tasks() :-) the following change seems to eliminate the problem on my setup (although, I kept it running only for a few minutes to get a few messages indicating migrate_dead_tasks() does move tasks and the system is still ok) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-27kbuild: fix a.out.h export to userspace with O= build.David Woodhouse
We need to check for existence of the a.out.h header in the source tree, not the object tree, if we want it to get the right answer with O=. Signed-off-by: David Woodhouse <david.woodhouse@intel.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-06-27firewire: fw-sbp2: fix parsing of logical unit directoriesRichard Sharpe
There is a small off-by-one bug in firewire-sbp2. This causes problems when a device exports multiple LUN Directories. I found it when trying to talk to a SONY DVD Jukebox. Signed-off-by: Richard Sharpe <realrichardsharpe@gmail.com> Acked-by: Kristian Høgsberg <krh@redhat.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (op. order, changelog)
2008-06-27Merge branch 'core/debugobjects' into core/urgentIngo Molnar
2008-06-26V4L/DVB (8108): Fix open/close race in saa7134Arjan van de Ven
The saa7134 driver uses a (non-atomic) variable in an attempt to only allow one opener of the device (how it deals with sending the fd over unix sockets I don't know). Unfortunately, the release function first decrements this variable, and THEN goes on to disable more of the device. This allows for a race where another opener of the device comes in after the decrement of the variable, configures the hardware just to then see the hardware be disabled by the rest of the release function. This patch makes the release function use the same lock as the open function to protect the hardware as well as the variable (which now at least has some locking to protect it). Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-26V4L/DVB (8100): V4L/vivi: fix possible memory leak in vivi_fillbuffMarcin Slusarz
Move allocation after first check and fix memory leak. Noticed-by: Daniel Marjamäki <danielm77@spray.se> Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-26V4L/DVB (8097): xc5000: check device hardware state to determine if firmware ↵Steven Toth
download is needed This patch ensures that the xc5000 will have firmware loaded as needed if the part is powered down or reset via gpio from the host. An example of this, in some cases, could be after the system resumes from standby or hibernate modes. Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-26V4L/DVB (8096): au8522: prevent false-positive lock statusSteven Toth
This decreases scan time in Queens, New York from 28 minutes to 7 minutes, with the exact same services found. Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-26V4L/DVB (8092): videodev: simplify and fix standard enumerationHans Verkuil
VIDIOC_ENUMSTD did not return all the PAL/SECAM/NTSC variants: it just returned one single PAL/SECAM/NTSC standard without separate entries for the trickier standards like NTSC-JP. Changed the code so that it behaves better. Also simplified the if/switch statements into a common standards lookup table. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-26V4L/DVB (8075): stv0299: Uncorrected block count and bit error rate fixedOliver Endriss
Fix uncorrected block counter and bit error rate to follow DVB API spec: - Unsupported controls return -ENOSYS. - UNC must never be set to 0. Signed-off-by: Oliver Endriss <o.endriss@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-26V4L/DVB (8074): av7110: OSD transfers should not be interruptedOliver Endriss
OSD transfers should not be interrupted. Signed-off-by: Oliver Endriss <o.endriss@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>