aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux
Commit message (Collapse)AuthorAge
* nfsd41: introduce nfs4_client cl_sessions listMarc Eshel2009-04-03
| | | | | | [get rid of CONFIG_NFSD_V4_1] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd41: sessions basic data typesAndy Adamson2009-04-03
| | | | | | | | | | | | | | | | | | | | | This patch provides basic data structures representing the nfs41 sessions and slots, plus helpers for keeping a reference count on the session and freeing it. Note that our server only support a headerpadsz of 0 and it ignores backchannel attributes at the moment. Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: remove headerpadsz from channel attributes] [nfsd41: embed nfsd4_channel in nfsd4_session] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: use bool inuse for slot state] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41 remove sl_session from nfsd4_slot] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd41: define nfs41 error codesMarc Eshel2009-04-03
| | | | | | | | | | | Define all error code present in http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-29. Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: clean up error code definitions] [nfsd41: change NFSERR_REPLAY_ME] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfs41: common protocol definitionsBenny Halevy2009-04-03
| | | | | | | | | | | | | | | | | | | | | | | Define all NFSv4.1 common operation and error code constants. Note that some of the definitions are used by both the nfs41 client and the server code. This patch is duplicated in the nfs41 and nfsd41 sessions patchset. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: add exchange id flags] Signed-off-by: Mike Sager <sager@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [removed server-only hunk changing NFSERR_REPLAY_ME] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: add SEQ4_XX to nfs41-common-protocol] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: generic error code update] [nfs41: reverse EXCHGID4_INVAL_FLAG_MASK_{A,R}] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: don't use the deferral service, return NFS4ERR_DELAYAndy Adamson2009-04-03
| | | | | | | | | | | | | | | | | | | | | | | On an NFSv4.1 server cache miss that causes an upcall, NFS4ERR_DELAY will be returned. It is up to the NFSv4.1 client to resend only the operations that have not been processed. Initialize rq_usedeferral to 1 in svc_process(). It sill be turned off in nfsd4_proc_compound() only when NFSv4.1 Sessions are used. Note: this isn't an adequate solution on its own. It's acceptable as a way to get some minimal 4.1 up and working, but we're going to have to find a way to avoid returning DELAY in all common cases before 4.1 can really be considered ready. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: reverse rq_nodeferral negative logic] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [sunrpc: initialize rq_usedeferral] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: embed nfsd4_current_state in nfsd4_compoundresAndy Adamson2009-03-29
| | | | | | | | Remove the allocation of struct nfsd4_compound_state. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* Fix a build warning about leaking CONFIG_NFSD to userspace.Greg Banks2009-03-27
| | | | | | | | | | | Fix a build warning about leaking CONFIG_NFSD to userspace. The nfsd_stats data structure does not need to be available to userspace; no kernel interface uses it. So move it inside #ifdef __KERNEL__ and the warning goes away. Signed-off-by: Greg Banks <gnb@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* SUNRPC: Clean up static inline functions in svc_xprt.hChuck Lever2009-03-18
| | | | | | | | Clean up: Enable the use of const arguments in higher level svc_ APIs by adding const to the arguments of the helper functions in svc_xprt.h Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* knfsd: add file to export stats about nfsd poolsGreg Banks2009-03-18
| | | | | | | | | | | | | | | | | | | | | | | | | | Add /proc/fs/nfsd/pool_stats to export to userspace various statistics about the operation of rpc server thread pools. This patch is based on a forward-ported version of knfsd-add-pool-thread-stats which has been shipping in the SGI "Enhanced NFS" product since 2006 and which was previously posted: http://article.gmane.org/gmane.linux.nfs/10375 It has also been updated thus: * moved EXPORT_SYMBOL() to near the function it exports * made the new struct struct seq_operations const * used SEQ_START_TOKEN instead of ((void *)1) * merged fix from SGI PV 990526 "sunrpc: use dprintk instead of printk in svc_pool_stats_*()" by Harshula Jayasuriya. * merged fix from SGI PV 964001 "Crash reading pool_stats before nfsds are started". Signed-off-by: Greg Banks <gnb@sgi.com> Signed-off-by: Harshula Jayasuriya <harshula@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* knfsd: avoid overloading the CPU scheduler with enormous load averagesGreg Banks2009-03-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Avoid overloading the CPU scheduler with enormous load averages when handling high call-rate NFS loads. When the knfsd bottom half is made aware of an incoming call by the socket layer, it tries to choose an nfsd thread and wake it up. As long as there are idle threads, one will be woken up. If there are lot of nfsd threads (a sensible configuration when the server is disk-bound or is running an HSM), there will be many more nfsd threads than CPUs to run them. Under a high call-rate low service-time workload, the result is that almost every nfsd is runnable, but only a handful are actually able to run. This situation causes two significant problems: 1. The CPU scheduler takes over 10% of each CPU, which is robbing the nfsd threads of valuable CPU time. 2. At a high enough load, the nfsd threads starve userspace threads of CPU time, to the point where daemons like portmap and rpc.mountd do not schedule for tens of seconds at a time. Clients attempting to mount an NFS filesystem timeout at the very first step (opening a TCP connection to portmap) because portmap cannot wake up from select() and call accept() in time. Disclaimer: these effects were observed on a SLES9 kernel, modern kernels' schedulers may behave more gracefully. The solution is simple: keep in each svc_pool a counter of the number of threads which have been woken but have not yet run, and do not wake any more if that count reaches an arbitrary small threshold. Testing was on a 4 CPU 4 NIC Altix using 4 IRIX clients, each with 16 synthetic client threads simulating an rsync (i.e. recursive directory listing) workload reading from an i386 RH9 install image (161480 regular files in 10841 directories) on the server. That tree is small enough to fill in the server's RAM so no disk traffic was involved. This setup gives a sustained call rate in excess of 60000 calls/sec before being CPU-bound on the server. The server was running 128 nfsds. Profiling showed schedule() taking 6.7% of every CPU, and __wake_up() taking 5.2%. This patch drops those contributions to 3.0% and 2.2%. Load average was over 120 before the patch, and 20.9 after. This patch is a forward-ported version of knfsd-avoid-nfsd-overload which has been shipping in the SGI "Enhanced NFS" product since 2006. It has been posted before: http://article.gmane.org/gmane.linux.nfs/10374 Signed-off-by: Greg Banks <gnb@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* Short write in nfsd becomes a full write to the clientDavid Shaw2009-03-18
| | | | | | | | | | | | | | | | | | | | | | If a filesystem being written to via NFS returns a short write count (as opposed to an error) to nfsd, nfsd treats that as a success for the entire write, rather than the short count that actually succeeded. For example, given a 8192 byte write, if the underlying filesystem only writes 4096 bytes, nfsd will ack back to the nfs client that all 8192 bytes were written. The nfs client does have retry logic for short writes, but this is never called as the client is told the complete write succeeded. There are probably other ways it could happen, but in my case it happened with a fuse (filesystem in userspace) filesystem which can rather easily have a partial write. Here is a patch to properly return the short write count to the client. Signed-off-by: David Shaw <dshaw@jabberwocky.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd4: remove use of mutex for file_hashtableJ. Bruce Fields2009-03-18
| | | | | | | | | | | | | As part of reducing the scope of the client_mutex, and in order to remove the need for mutexes from the callback code (so that callbacks can be done as asynchronous rpc calls), move manipulations of the file_hashtable under the recall_lock. Update the relevant comments while we're here. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: Alexandros Batsakis <batsakis@netapp.com> Reviewed-by: Benny Halevy <bhalevy@panasas.com>
* nfsd4: remove unused CHECK_FH flagJ. Bruce Fields2009-03-18
| | | | | | All users now pass this, so it's meaningless. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd4: separate delegreturn case from preprocess_stateid_opJ. Bruce Fields2009-03-18
| | | | | | | | | | | | Delegreturn is enough a special case for preprocess_stateid_op to warrant just open-coding it in delegreturn. There should be no change in behavior here; we're just reshuffling code. Thanks to Yang Hongyang for catching a critical typo. Reviewed-by: Yang Hongyang <yanghy@cn.fujitsu.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfs: replace uses of __constant_{endian}Harvey Harrison2009-03-18
| | | | | | | | | | The base versions handle constant folding now, none of these headers are exported to userspace, so the __ prefixed versions are not necessary. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Reviewed-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd4: use helper for copying delegation filehandleJ. Bruce Fields2009-03-18
| | | | Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd4: use helper for copying filehandles for replayJ. Bruce Fields2009-03-18
| | | | Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: nfsd should drop CAP_MKNOD for non-rootJ. Bruce Fields2009-03-17
| | | | | | | | | | | | | | Since creating a device node is normally an operation requiring special privilege, Igor Zhbanov points out that it is surprising (to say the least) that a client can, for example, create a device node on a filesystem exported with root_squash. So, make sure CAP_MKNOD is among the capabilities dropped when an nfsd thread handles a request from a non-root user. Reported-by: Igor Zhbanov <izh1979@gmail.com> Cc: stable@kernel.org Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2009-03-15
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: (23 commits) [ARM] Fix virtual to physical translation macro corner cases [ARM] update mach-types [ARM] 5421/1: ftrace: fix crash due to tracing of __naked functions MX1 fix include [ARM] 5419/1: ep93xx: fix build warnings about struct i2c_board_info [ARM] 5418/1: restore lr before leaving mcount ARM: OMAP: board-omap3beagle: set i2c-3 to 100kHz ARM: OMAP: Allow I2C bus driver to be compiled as a module ARM: OMAP: sched_clock() corrected ARM: OMAP: Fix compile error if pm.h is included [ARM] orion5x: pass dram mbus data to xor driver [ARM] S3C64XX: Fix s3c64xx_setrate_clksrc [ARM] S3C64XX: sparse warnings in arch/arm/plat-s3c64xx/irq.c [ARM] S3C64XX: sparse warnings in arch/arm/plat-s3c64xx/s3c6400-clock.c [ARM] S3C64XX: Fix USB host clock mux list [ARM] S3C64XX: Fix name of USB host clock. [ARM] S3C64XX: Rename IRQ_UHOST to IRQ_USBH [ARM] S3C64XX: Do gpiolib configuration earlier [ARM] S3C64XX: Staticise s3c64xx_init_irq_eint() [ARM] SMDK6410: Declare iodesc table static ...
| * [ARM] 5421/1: ftrace: fix crash due to tracing of __naked functionsUwe Kleine-König2009-03-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a fix for the following crash observed in 2.6.29-rc3: http://lkml.org/lkml/2009/1/29/150 On ARM it doesn't make sense to trace a naked function because then mcount is called without stack and frame pointer being set up and there is no chance to restore the lr register to the value before mcount was called. Reported-by: Matthias Kaehlcke <matthias@kaehlcke.net> Tested-by: Matthias Kaehlcke <matthias@kaehlcke.net> Cc: Abhishek Sagar <sagar.abhishek@gmail.com> Cc: Steven Rostedt <rostedt@home.goodmis.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2009-03-14
|\ \ | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/linux-2.6-block: Fix Xilinx SystemACE driver to handle empty CF slot block: fix memory leak in bio_clone() block: Add gfp_mask parameter to bio_integrity_clone()
| * | block: Add gfp_mask parameter to bio_integrity_clone()un'ichi Nomura2009-03-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Stricter gfp_mask might be required for clone allocation. For example, request-based dm may clone bio in interrupt context so it has to use GFP_ATOMIC. Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com> Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Cc: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | | Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds2009-03-14
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: NFS: Fix the fix to Bugzilla #11061, when IPv6 isn't defined... SUNRPC: xprt_connect() don't abort the task if the transport isn't bound SUNRPC: Fix an Oops due to socket not set up yet... Bug 11061, NFS mounts dropped NFS: Handle -ESTALE error in access() NLM: Fix GRANT callback address comparison when IPv6 is enabled NLM: Shrink the IPv4-only version of nlm_cmp_addr() NFSv3: Fix posix ACL code NFS: Fix misparsing of nfsv4 fs_locations attribute (take 2) SUNRPC: Tighten up the task locking rules in __rpc_execute()
| * | | NLM: Shrink the IPv4-only version of nlm_cmp_addr()Chuck Lever2009-03-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up/micro-optimatization: Make the AF_INET-only version of nlm_cmp_addr() smaller. This matches the style of nlm_privileged_requester(), and makes the AF_INET-only version of nlm_cmp_addr() nearly the same size as it was before IPv6 support. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | | NFSv3: Fix posix ACL codeTrond Myklebust2009-03-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a memory leak due to allocation in the XDR layer. In cases where the RPC call needs to be retransmitted, we end up allocating new pages without clearing the old ones. Fix this by moving the allocation into nfs3_proc_setacls(). Also fix an issue discovered by Kevin Rudd, whereby the amount of memory reserved for the acls in the xdr_buf->head was miscalculated, and causing corruption. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | | | ide: save the returned value of dma_map_sgFUJITA Tomonori2009-03-13
| |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dma_map_sg could return a value different to 'nents' argument of dma_map_sg so the ide stack needs to save it for the later usage (e.g. for_each_sg). The ide stack also needs to save the original sg_nents value for pci_unmap_sg. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> [bart: backport to Linus' tree] Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | | cpumask: mm_cpumask for accessing the struct mm_struct's cpu_vm_mask.Rusty Russell2009-03-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | This allows us to change the representation (to a dangling bitmap or cpumask_var_t) without breaking all the callers: they can use mm_cpumask() now and won't see a difference as the changes roll into linux-next. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | | cpumask: tsk_cpumask for accessing the struct task_struct's cpus_allowed.Rusty Russell2009-03-12
|/ / | | | | | | | | | | | | | | | | This allows us to change the representation (to a dangling bitmap or cpumask_var_t) without breaking all the callers: they can use tsk_cpumask() now and won't see a difference as the changes roll into linux-next. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | Merge branch 'fixes' of ↵Linus Torvalds2009-03-09
|\ \ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] Add p4-clockmod sysfs-ui removal to feature-removal schedule. Revert "[CPUFREQ] Disable sysfs ui for p4-clockmod."
| * | Revert "[CPUFREQ] Disable sysfs ui for p4-clockmod."Dave Jones2009-03-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit e088e4c9cdb618675874becb91b2fd581ee707e6. Removing the sysfs interface for p4-clockmod was flagged as a regression in bug 12826. Course of action: - Find out the remaining causes of overheating, and fix them if possible. ACPI should be doing the right thing automatically. If it isn't, we need to fix that. - mark p4-clockmod ui as deprecated - try again with the removal in six months. It's not really feasible to printk about the deprecation, because it needs to happen at all the sysfs entry points, which means adding a lot of strcmp("p4-clockmod".. calls to the core, which.. bleuch. Signed-off-by: Dave Jones <davej@redhat.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2009-03-09
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (29 commits) p54: fix race condition in memory management cfg80211: test before subtraction on unsigned iwlwifi: fix error flow in iwl*_pci_probe rt2x00 : more devices to rt73usb.c rt2x00 : more devices to rt2500usb.c bonding: Fix device passed into ->ndo_neigh_setup(). vlan: Fix vlan-in-vlan crashes. net: Fix missing dev->neigh_setup in register_netdevice(). tmspci: fix request_irq race pkt_sched: act_police: Fix a rate estimator test. tg3: Fix 5906 link problems SCTP: change sctp_ctl_sock_init() to try IPv4 if IPv6 fails IPv6: add "disable" module parameter support to ipv6.ko sungem: another error printed one too early aoe: error printed 1 too early net pcmcia: worklimit reaches -1 net: more timeouts that reach -1 net: fix tokenring license dm9601: new vendor/product IDs netlink: invert error code in netlink_set_err() ...
| * \ \ Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller2009-03-05
| |\ \ \ | | | |/ | | |/|
| * | | vlan: Fix vlan-in-vlan crashes.David S. Miller2009-03-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As analyzed by Patrick McHardy, vlan needs to reset it's netdev_ops pointer in it's ->init() function but this leaves the compat method pointers stale. Add a netdev_resync_ops() and call it from the vlan code. Any other driver which changes ->netdev_ops after register_netdevice() will need to call this new function after doing so too. With help from Patrick McHardy. Tested-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | Merge branch 'fixes' of ↵Linus Torvalds2009-03-08
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: dmatest: fix use after free in dmatest_exit ipu_idmac: fix spinlock type iop-adma, mv_xor: fix mem leak on self-test setup failure fsldma: fix off by one in dma_halt I/OAT: fail self-test if callback test reaches timeout I/OAT: update driver version and copyright dates I/OAT: list usage cleanup I/OAT: set tcp_dma_copybreak to 256k for I/OAT ver.3 I/OAT: cancel watchdog before dma remove I/OAT: fail initialization on zero channels detection I/OAT: do not set DCACTRL_CMPL_WRITE_ENABLE for I/OAT ver.3 I/OAT: add verification for proper APICID_TAG_MAP setting by BIOS dmaengine: update kerneldoc
| * | | | dmaengine: update kerneldocJohannes Weiner2009-02-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some of the kerneldoc comments in the dmaengine header describe already removed structure members. Remove them. Also add a short description for dma_device->device_is_tx_complete. Signed-off-by: Johannes Weiner <jw@emlix.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds2009-03-08
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: ata: add CFA specific identify data words remove stale comment from <linux/hdreg.h> AT91: initialize Compact Flash on AT91SAM9263 cpu ide: add at91_ide driver ide: allow to wrap interrupt handler ide-iops: fix odd-length ATAPI PIO transfers ide: NULL noise: drivers/ide/ide-*.c ide: expiry() returns int, negative expiry() return values won't be noticed
| * | | | | ata: add CFA specific identify data wordsSergei Shtylyov2009-03-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Declare CFA specific identify data words 162 and 163 for future use. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com> [bart: update patch summary/description] Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | | | | remove stale comment from <linux/hdreg.h>Bartlomiej Zolnierkiewicz2009-03-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | HDIO_GET_IDENTITY returns 256 words currently. Noticed by Norman Diamond. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | | | | ide: allow to wrap interrupt handlerStanislaw Gruszka2009-03-05
| | |_|/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl> Cc: Andrew Victor <linux@maxim.org.za> [bart: minor checkpatch.pl / CodingStyle fixups] Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | | | | Merge branch 'upstream-linus' of ↵Linus Torvalds2009-03-08
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: libata: Don't trust current capacity values in identify words 57-58 libata: make sure port is thawed when skipping resets sata_nv: fix module parameter description ahci: Add the Device IDs for MCP89 and remove IDs of MCP7B to/from ahci.c libata: don't use on-stack sense buffer libata: align ap->sector_buf libata: fix dma_unmap_sg misuse libata: change drive ready wait after hard reset to 5s
| * | | | | libata: align ap->sector_bufTejun Heo2009-03-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ap->sector_buf is used as DMA target and should at least be aligned on cacheline. This caused problems on some embedded machines. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | | | | libata: fix dma_unmap_sg misuseFUJITA Tomonori2009-03-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | libata passes the returned value of dma_map_sg() to dma_unmap_sg(),which is the misuse of dma_unmap_sg(). DMA-mapping.txt says: To unmap a scatterlist, just call: pci_unmap_sg(pdev, sglist, nents, direction); Again, make sure DMA activity has already finished. PLEASE NOTE: The 'nents' argument to the pci_unmap_sg call must be the _same_ one you passed into the pci_map_sg call, it should _NOT_ be the 'count' value _returned_ from the pci_map_sg call. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | | | | libata: change drive ready wait after hard reset to 5sStuart Hayes2009-03-05
| |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes problems during resume with drives that take longer than 1s to be ready. The ATA-6 spec appears to allow 5 seconds for a drive to be ready. On one affected system, this patch changes "PM: resume devices took..." message from 17 seconds to 4 seconds, and gets rid of a lot of ugly timeout/error messages. Without this patch, the libata code moves on after 1s, tries to send a soft reset (which the drive doesn't see because it isn't ready) which also times out, then an IDENTIFY command is sent to the drive which times out, and finally the error handler will try to send another hard reset which will finally get things working. Signed-off-by: Stuart Hayes <stuart_hayes@dell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* | | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-03-08
|\ \ \ \ \ | |/ / / / |/| | | | | | | | | | | | | | | | | | | | | | | | 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: serio - fix protocol number for TouchIT213
| * | | | Input: serio - fix protocol number for TouchIT213Dmitry Torokhov2009-03-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Protocol 0x37 has been reserved for iNexio devices and Sahara was supposed to get 0x38. Reported-by: Claudio Nieder <private@claudio.ch> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* | | | | Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds2009-03-03
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: don't allow setuid to succeed if the user does not have rt bandwidth sched_rt: don't start timer when rt bandwidth disabled
| * | | | | sched: don't allow setuid to succeed if the user does not have rt bandwidthDhaval Giani2009-02-27
| | |_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix hung task with certain (non-default) rt-limit settings Corey Hickey reported that on using setuid to change the uid of a rt process, the process would be unkillable and not be running. This is because there was no rt runtime for that user group. Add in a check to see if a user can attach an rt task to its task group. On failure, return EINVAL, which is also returned in CONFIG_CGROUP_SCHED. Reported-by: Corey Hickey <bugfood-ml@fatooh.org> Signed-off-by: Dhaval Giani <dhaval@linux.vnet.ibm.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | | Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds2009-03-03
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: rcu: Teach RCU that idle task is not quiscent state at boot
| * | | | | rcu: Teach RCU that idle task is not quiscent state at bootPaul E. McKenney2009-02-25
| |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a bug located by Vegard Nossum with the aid of kmemcheck, updated based on review comments from Nick Piggin, Ingo Molnar, and Andrew Morton. And cleans up the variable-name and function-name language. ;-) The boot CPU runs in the context of its idle thread during boot-up. During this time, idle_cpu(0) will always return nonzero, which will fool Classic and Hierarchical RCU into deciding that a large chunk of the boot-up sequence is a big long quiescent state. This in turn causes RCU to prematurely end grace periods during this time. This patch changes the rcutree.c and rcuclassic.c rcu_check_callbacks() function to ignore the idle task as a quiescent state until the system has started up the scheduler in rest_init(), introducing a new non-API function rcu_idle_now_means_idle() to inform RCU of this transition. RCU maintains an internal rcu_idle_cpu_truthful variable to track this state, which is then used by rcu_check_callback() to determine if it should believe idle_cpu(). Because this patch has the effect of disallowing RCU grace periods during long stretches of the boot-up sequence, this patch also introduces Josh Triplett's UP-only optimization that makes synchronize_rcu() be a no-op if num_online_cpus() returns 1. This allows boot-time code that calls synchronize_rcu() to proceed normally. Note, however, that RCU callbacks registered by call_rcu() will likely queue up until later in the boot sequence. Although rcuclassic and rcutree can also use this same optimization after boot completes, rcupreempt must restrict its use of this optimization to the portion of the boot sequence before the scheduler starts up, given that an rcupreempt RCU read-side critical section may be preeempted. In addition, this patch takes Nick Piggin's suggestion to make the system_state global variable be __read_mostly. Changes since v4: o Changes the name of the introduced function and variable to be less emotional. ;-) Changes since v3: o WARN_ON(nr_context_switches() > 0) to verify that RCU switches out of boot-time mode before the first context switch, as suggested by Nick Piggin. Changes since v2: o Created rcu_blocking_is_gp() internal-to-RCU API that determines whether a call to synchronize_rcu() is itself a grace period. o The definition of rcu_blocking_is_gp() for rcuclassic and rcutree checks to see if but a single CPU is online. o The definition of rcu_blocking_is_gp() for rcupreempt checks to see both if but a single CPU is online and if the system is still in early boot. This allows rcupreempt to again work correctly if running on a single CPU after booting is complete. o Added check to rcupreempt's synchronize_sched() for there being but one online CPU. Tested all three variants both SMP and !SMP, booted fine, passed a short rcutorture test on both x86 and Power. Located-by: Vegard Nossum <vegard.nossum@gmail.com> Tested-by: Vegard Nossum <vegard.nossum@gmail.com> Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | | Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2009-03-02
|\ \ \ \ \ | |_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: fix warning in io_mapping_map_wc() x86: i915 needs pgprot_writecombine() and is_io_mapping_possible()
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-28 11:07:05 -0500