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2008-06-20Add cycle_kernel_lock()Jonathan Corbet
A number of driver functions are so obviously trivial that they do not need the big kernel lock - at least not overtly. It turns out that the acquisition of the BKL in driver open() functions can perform a sort of poor-hacker's serialization function, delaying the open operation until the driver is certain to have completed its initialization. Add a simple cycle_kernel_lock() function for these cases to make it clear that there is no need to *hold* the BKL, just to be sure that we can acquire it. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-05-18i2c: Kill the old driver matching schemeJean Delvare
Remove the old driver_name/type scheme for i2c driver matching. Only the standard aliasing model will be used from now on. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-05-15Clean up 'print_fn_descriptor_symbol()' typesLinus Torvalds
Everybody wants to pass it a function pointer, and in fact, that is what you _must_ pass it for it to make sense (since it knows that ia64 and ppc64 use descriptors for function pointers and fetches the actual address from there). So don't make the argument be a 'unsigned long' and force everybody to add a cast. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-14Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs * 'for-linus' of ssh://master.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: 9p: fix error path during early mount 9p: make cryptic unknown error from server less scary 9p: fix flags length in net 9p: Correct fidpool creation failure in p9_client_create 9p: use struct mutex instead of struct semaphore 9p: propagate parse_option changes to client and transports fs/9p/v9fs.c (v9fs_parse_options): Handle kstrdup and match_strdup failure. 9p: Documentation updates add match_strlcpy() us it to make v9fs make uname and remotename parsing more robust
2008-05-14per_cpu: fix DEFINE_PER_CPU_SHARED_ALIGNED for modulesEric Dumazet
Current module loader lookups ".data.percpu" ELF section to perform per_cpu relocation. But DEFINE_PER_CPU_SHARED_ALIGNED() uses another section (".data.percpu.shared_aligned"), currently only handled in vmlinux.lds, not by module loader. To correct this problem, instead of adding logic into module loader, or using at build time a module.lds file for all arches to group ".data.percpu.shared_aligned" into ".data.percpu", just use ".data.percpu" for modules. Alignment requirements are correctly handled by ld and module loader. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-14lib: create common ascii hex arrayHarvey Harrison
Add a common hex array in hexdump.c so everyone can use it. Add a common hi/lo helper to avoid the shifting masking that is done to get the upper and lower nibbles of a byte value. Pull the pack_hex_byte helper from kgdb as it is opencoded many places in the tree that will be consolidated. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Cc: Jason Wessel <jason.wessel@windriver.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>
2008-05-14add match_strlcpy() us it to make v9fs make uname and remotename parsing ↵Markus Armbruster
more robust match_strcpy() is a somewhat creepy function: the caller needs to make sure that the destination buffer is big enough, and when he screws up or forgets, match_strcpy() happily overruns the buffer. There's exactly one customer: v9fs_parse_options(). I believe it currently can't overflow its buffer, but that's not exactly obvious. The source string is a substing of the mount options. The kernel silently truncates those to PAGE_SIZE bytes, including the terminating zero. See compat_sys_mount() and do_mount(). The destination buffer is obtained from __getname(), which allocates from name_cachep, which is initialized by vfs_caches_init() for size PATH_MAX. We're safe as long as PATH_MAX <= PAGE_SIZE. PATH_MAX is 4096. As far as I know, the smallest PAGE_SIZE is also 4096. Here's a patch that makes the code a bit more obviously correct. It doesn't depend on PATH_MAX <= PAGE_SIZE. Signed-off-by: Markus Armbruster <armbru@redhat.com> Cc: Latchesar Ionkov <lucho@ionkov.net> Cc: Jim Meyering <meyering@redhat.com> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-05-14cs5520: disable VDMABartlomiej Zolnierkiewicz
Disable Virtual DMA support for now (it causes system hangs). Thanks to TAKADA Yoshihito for the help with debugging the problem. Reported-by: TAKADA Yoshihito <takada@mbf.nifty.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-05-14make ide-iops.c:SELECT_MASK() staticAdrian Bunk
SELECT_MASK() can now become static. [bart: remove space between function name and open parenthesis] Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-05-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6: Driver core: struct class remove children list block: do_mounts - accept root=<non-existant partition>
2008-05-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (22 commits) USB: atmel_usba_udc fixes, mostly disconnect() USB: pxa27x_udc: minor fixes usbtest: comment on why this code "expects" negative and positive errnos USB: remove PICDEM FS USB demo (04d8:000c) device from ldusb USB: option: add new Dell 5520 HSDPA variant USB: unusual_devs: Add support for GI 0401 SD-Card interface USB: serial gadget: descriptor cleanup USB: serial gadget: simplify endpoint handling USB: serial gadget: remove needless data structure USB: serial gadget: cleanup/reorg usb: fix compile warning in isp1760 USB: do not handle device 1410:5010 in 'option' driver USB: Fix unusual_devs.h ordering USB: add Zoom Telephonics Model 3095F V.92 USB Mini External modem to cdc-acm USB: Support for the ET502HS HDSPA modem in option driver USB: Support for the ET502HS HDSPA modem usb: fix integer as NULL pointer warnings found by sparse USB: isp1760: fix printk format USB: add Telstra NextG CDMA id to option driver USB: add association.h ...
2008-05-14Driver core: struct class remove children listDave Young
because of the class_device was removed, now do the children list removing Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-05-14block: do_mounts - accept root=<non-existant partition>Kay Sievers
Some devices, like md, may create partitions only at first access, so allow root= to be set to a valid non-existant partition of an existing disk. This applies only to non-initramfs root mounting. This fixes a regression from 2.6.24 which did allow this to happen and broke some users machines :( Acked-by: Neil Brown <neilb@suse.de> Tested-by: Joao Luis Meloni Assirati <assirati@nonada.if.usp.br> Cc: stable <stable@kernel.org> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-05-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (73 commits) net: Fix typo in net/core/sock.c. ppp: Do not free not yet unregistered net device. netfilter: xt_iprange: module aliases for xt_iprange netfilter: ctnetlink: dump conntrack ID in event messages irda: Fix a misalign access issue. (v2) sctp: Fix use of uninitialized pointer cipso: Relax too much careful cipso hash function. tcp FRTO: work-around inorder receivers tcp FRTO: Fix fallback to conventional recovery New maintainer for Intel ethernet adapters DM9000: Use delayed work to update MII PHY state DM9000: Update and fix driver debugging messages DM9000: Add __devinit and __devexit attributes to probe and remove sky2: fix simple define thinko [netdrvr] sfc: sfc: Add self-test support [netdrvr] sfc: Increment rx_reset when reported as driver event [netdrvr] sfc: Remove unused macro EFX_XAUI_RETRAIN_MAX [netdrvr] sfc: Fix code formatting [netdrvr] sfc: Remove kernel-doc comments for removed members of struct efx_nic [netdrvr] sfc: Remove garbage from comment ...
2008-05-14USB: add association.hGreg Kroah-Hartman
This will be used by the wireless usb code, as well as potentially other USB code. Originally based on some .c code written by Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> Cc: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-05-13fuse: add flag to turn on big writesMiklos Szeredi
Prior to 2.6.26 fuse only supported single page write requests. In theory all fuse filesystem should be able support bigger than 4k writes, as there's nothing in the API to prevent it. Unfortunately there's a known case in NTFS-3G where big writes cause filesystem corruption. There could also be other filesystems, where the lack of testing with big write requests would result in bugs. To prevent such problems on a kernel upgrade, disable big writes by default, but let filesystems set a flag to turn it on. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: Szabolcs Szakacsits <szaka@ntfs-3g.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-13memcg: fix possible panic when CONFIG_MM_OWNER=yKOSAKI Motohiro
When mm destruction happens, we should pass mm_update_next_owner() the old mm. But unfortunately new mm is passed in exec_mmap(). Thus, kernel panic is possible when a multi-threaded process uses exec(). Also, the owner member comment description is wrong. mm->owner does not necessarily point to the thread group leader. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: "Paul Menage" <menage@google.com> Cc: "KAMEZAWA Hiroyuki" <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-13cpumask: remove bitmap_scnprintf_len and cpumask_scnprintf_lenPaul Jackson
They aren't used. They were briefly used as part of some other patches to provide an alternative format for displaying some /proc and /sys cpumasks. They probably should have been removed when those other patches were dropped, in favor of a different solution. Signed-off-by: Paul Jackson <pj@sgi.com> Cc: "Mike Travis" <travis@sgi.com> Cc: "Bert Wesarg" <bert.wesarg@googlemail.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-12net: Allow netdevices to specify needed head/tailroomJohannes Berg
This patch adds needed_headroom/needed_tailroom members to struct net_device and updates many places that allocate sbks to use them. Not all of them can be converted though, and I'm sure I missed some (I mostly grepped for LL_RESERVED_SPACE) Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-12net: Set LL_MAX_HEADER properly for wireless.David S. Miller
Wireless networking, particularly with MESH enabled, has quite strong requirements for link-layer header space. Based upon some numbers and descriptions from Johannes Berg we use 96 (same as AX25) for plain wireless, and with mesh enabled we use 128. In the process, simplify the cpp conditional logic here by ordering the cases by those needing the most space down to those needing the least case. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-12Make 'cond_resched()' nullification depend on PREEMPT_BKLLinus Torvalds
Because it's not correct with a non-preemptable BKL and just causes PREEMPT kernels to have longer latencies than non-PREEMPT ones (which is obviously not the point of it at all). Of course, that config option actually got removed as an option earlier, so for now this basically disables it entirely, but if BKL preemption is ever resurrected it will be a meaningful optimization. And in the meantime, it at least documents the intent of the code, while not doing the wrong thing. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-12Fix up 'need_resched()' definitionLinus Torvalds
We should not go through the task pointer to get at the thread info, since it's usually cheaper to just access the thread info directly. So don't make the code look up 'current', when we can just use the thread info accessor functions directly. This generally avoids one level of indirection and tends to work better together with code that also looks at other thread flags (eg preempt_count). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-12syncppp: Fix crashes.David S. Miller
The syncppp layer wants a mid-level netdev private pointer. It was using netdev->priv but that only worked by accident, and thus this scheme was broken when the device private allocation strategy changed. Add a proper mid-layer private pointer for uses like this, update syncppp and all users, and remove the HDLC_PPP broken tag from drivers/net/wan/Kconfig Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-11Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c: Convert some more new-style drivers to use module aliasing i2c: Match dummy devices by type i2c-sibyte: Mark i2c_sibyte_add_bus() as static i2c-sibyte: Correct a comment about frequency i2c: Improve the functionality documentation i2c: Improve smbus-protocol documentation i2c-piix4: Blacklist two mainboards i2c-piix4: Increase the intitial delay for the ServerWorks CSB5 i2c-mpc: Compare to NO_IRQ instead of zero
2008-05-11Add new 'cond_resched_bkl()' helper functionLinus Torvalds
It acts exactly like a regular 'cond_resched()', but will not get optimized away when CONFIG_PREEMPT is set. Normal kernel code is already preemptable in the presense of CONFIG_PREEMPT, so cond_resched() is optimized away (see commit 02b67cc3ba36bdba351d6c3a00593f4ec550d9d3 "sched: do not do cond_resched() when CONFIG_PREEMPT"). But when wanting to conditionally reschedule while holding a lock, you need to use "cond_sched_lock(lock)", and the new function is the BKL equivalent of that. Also make fs/locks.c use it. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-11i2c: Match dummy devices by typeJean Delvare
As the old driver_name/type matching scheme is going away soon, change the dummy device mechanism to use the new matching scheme. This has the downside that dummy i2c clients can no longer choose their name, they'll all appear as "dummy" in sysfs and in log messages. I don't think it is a problem in practice though, as there is little reason to use these i2c clients to log messages. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-05-11Merge branch 'upstream-linus' of ↵Linus Torvalds
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] revert new check-ready Status register logic
2008-05-10BKL: revert back to the old spinlock implementationLinus Torvalds
The generic semaphore rewrite had a huge performance regression on AIM7 (and potentially other BKL-heavy benchmarks) because the generic semaphores had been rewritten to be simple to understand and fair. The latter, in particular, turns a semaphore-based BKL implementation into a mess of scheduling. The attempt to fix the performance regression failed miserably (see the previous commit 00b41ec2611dc98f87f30753ee00a53db648d662 'Revert "semaphore: fix"'), and so for now the simple and sane approach is to instead just go back to the old spinlock-based BKL implementation that never had any issues like this. This patch also has the advantage of being reported to fix the regression completely according to Yanmin Zhang, unlike the semaphore hack which still left a couple percentage point regression. As a spinlock, the BKL obviously has the potential to be a latency issue, but it's not really any different from any other spinlock in that respect. We do want to get rid of the BKL asap, but that has been the plan for several years. These days, the biggest users are in the tty layer (open/release in particular) and Alan holds out some hope: "tty release is probably a few months away from getting cured - I'm afraid it will almost certainly be the very last user of the BKL in tty to get fixed as it depends on everything else being sanely locked." so while we're not there yet, we do have a plan of action. Tested-by: Yanmin Zhang <yanmin_zhang@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <andi@firstfloor.org> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Alexander Viro <viro@ftp.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-10Move ACCESS_ONCE() to <linux/compiler.h>Linus Torvalds
It actually makes much more sense there, and we do tend to need it for non-RCU usage too. Moving it to <linux/compiler.h> will allow some other cases that have open-coded the same logic to use the same helper function that RCU has used. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-09[libata] revert new check-ready Status register logicJeff Garzik
This behavior differs across multiple controllers, so we cannot use common logic for all controllers. Revert back to the basic common behavior, and specific drivers will be updated from here to take into account the unusual Status return values. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-09Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (23 commits) [POWERPC] Remove leftover printk in isa-bridge.c [POWERPC] Remove duplicate #include [POWERPC] Initialize lockdep earlier [POWERPC] Document when printk is useable [POWERPC] Fix bogus paca->_current initialization [POWERPC] Fix of_i2c include for module compilation [POWERPC] Make default cputable entries reflect selected CPU family [POWERPC] spufs: lockdep annotations for spufs_dir_close [POWERPC] spufs: don't requeue victim contex in find_victim if it's not in spu_run [POWERPC] 4xx: Fix PCI mem in sequoia DTS [POWERPC] 4xx: Add endpoint support to 4xx PCIe driver [POWERPC] 4xx: Fix problem with new TLB storage attibute fields on 440x6 core [POWERPC] spufs: spu_create should send inotify IM_CREATE event [POWERPC] spufs: handle faults while the context switch pending flag is set [POWERPC] spufs: fix concurrent delivery of class 0 & 1 exceptions [POWERPC] spufs: try to route SPU interrupts to local node [POWERPC] spufs: set SPU_CONTEXT_SWITCH_PENDING before synchronising SPU irqs [POWERPC] spufs: don't acquire state_mutex interruptible while performing callback [POWERPC] spufs: update master runcntl with context lock held [POWERPC] spufs: fix post-stopped update of MFC_CNTL register ...
2008-05-09module: put modversions in vermagicRusty Russell
Don't allow a module built without versions altogether to be inserted into a kernel which expects modversions. modprobe --force will strip vermagic as well as modversions, so it won't be effected, but this will make sure that a non-CONFIG_MODVERSIONS module won't be accidentally inserted into a CONFIG_MODVERSIONS kernel. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-09[POWERPC] Fix of_i2c include for module compilationJochen Friedrich
Remove #ifdef CONFIG_OF_I2C as this breaks module compilation. Drivers using this header should depend on OF_I2C anyways, so there's no need to make this conditional. Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-05-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (32 commits) net: Added ASSERT_RTNL() to dev_open() and dev_close(). can: Fix can_send() handling on dev_queue_xmit() failures netns: Fix arbitrary net_device-s corruptions on net_ns stop. netfilter: Kconfig: default DCCP/SCTP conntrack support to the protocol config values netfilter: nf_conntrack_sip: restrict RTP expect flushing on error to last request macvlan: Fix memleak on device removal/crash on module removal net/ipv4: correct RFC 1122 section reference in comment tcp FRTO: SACK variant is errorneously used with NewReno e1000e: don't return half-read eeprom on error ucc_geth: Don't use RX clock as TX clock. cxgb3: Use CAP_SYS_RAWIO for firmware pcnet32: delete non NAPI code from driver. fs_enet: Fix a memory leak in fs_enet_mdio_probe [netdrvr] eexpress: IPv6 fails - multicast problems 3c59x: use netstats in net_device structure 3c980-TX needs EXTRA_PREAMBLE fix warning in drivers/net/appletalk/cops.c e1000e: Add support for BM PHYs on ICH9 uli526x: fix endianness issues in the setup frame uli526x: initialize the hardware prior to requesting interrupts ...
2008-05-08Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: Revert "relay: fix splice problem" docbook: fix bio missing parameter block: use unitialized_var() in bio_alloc_bioset() block: avoid duplicate calls to get_part() in disk stat code cfq-iosched: make io priorities inherit CPU scheduling class as well as nice block: optimize generic_unplug_device() block: get rid of likely/unlikely predictions in merge logic vfs: splice remove_suid() cleanup cfq-iosched: fix RCU race in the cfq io_context destructor handling block: adjust tagging function queue bit locking block: sysfs store function needs to grab queue_lock and use queue_flag_*()
2008-05-08Merge 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 memory corruption when fs mounted with noadinicb option udf: Make udf exportable udf: fs/udf/partition.c:udf_get_pblock() mustn't be inline
2008-05-08Merge branch 'upstream-davem' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6
2008-05-08netfilter: nf_conntrack_sip: restrict RTP expect flushing on error to last ↵Patrick McHardy
request Some Inovaphone PBXs exhibit very stange behaviour: when dialing for example "123", the device sends INVITE requests for "1", "12" and "123" back to back. The first requests will elicit error responses from the receiver, causing the SIP helper to flush the RTP expectations even though we might still see a positive response. Note the sequence number of the last INVITE request that contained a media description and only flush the expectations when receiving a negative response for that sequence number. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-07block: avoid duplicate calls to get_part() in disk stat codeJens Axboe
get_part() is fairly expensive, as it O(N) loops over partitions to find the right one. In lots of normal IO paths we end up looking up the partition twice, to make matters even worse. Change the stat add code to accept a passed in partition instead. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-05-07cfq-iosched: make io priorities inherit CPU scheduling class as well as niceJens Axboe
We currently set all processes to the best-effort scheduling class, regardless of what CPU scheduling class they belong to. Improve that so that we correctly track idle and rt scheduling classes as well. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-05-07udf: Make udf exportableRasmus Rohde
Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Rasmus Rohde <rohde@duff.dk> Signed-off-by: Jan Kara <jack@suse.cz>
2008-05-07vfs: splice remove_suid() cleanupMiklos Szeredi
generic_file_splice_write() duplicates remove_suid() just because it doesn't hold i_mutex. But it grabs i_mutex inside splice_from_pipe() anyway, so this is rather pointless. Move locking to generic_file_splice_write() and call remove_suid() and __splice_from_pipe() instead. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-05-06Merge 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] fix SMP ordering hole in fcntl_setlk() [PATCH] kill ->put_inode [PATCH] fix reservation discarding in affs
2008-05-06[PATCH] kill ->put_inodeChristoph Hellwig
And with that last patch to affs killing the last put_inode instance we can finally, after many years of transition kill this racy and awkward interface. (It's kinda funny that even the description in Documentation/filesystems/vfs.txt was entirely wrong..) Also remove a very misleading comment above the defintion of struct super_operations. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-05-06Merge branch 'for-2.6.26' of ↵Jeff Garzik
git://git.farnsworth.org/dale/linux-2.6-mv643xx_eth into upstream
2008-05-06phylib: Fix some sparse warningsAndy Fleming
Declared some things static, declared some things in the header. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06libata: export ata_eh_analyze_ncq_errorMark Lord
Export ata_eh_analyze_ncq_error() for subsequent use by sata_mv, as suggested by Tejun. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06libata: improve post-reset device ready testTejun Heo
Some controllers (jmb and inic162x) use 0x77 and 0x7f to indicate that the device isn't ready yet. It looks like they use 0xff if device presence is detected but connection isn't established. 0x77 or 0x7f after connection is established and use the value from signature FIS after receiving it. This patch implements ata_check_ready(), which takes TF status value and determines whether the port is ready or not considering the above and other conditions, and use it in @check_ready() functions. This is safe as both 0x77 and 0x7f aren't valid ready status value even though they have BSY bit cleared. This fixes hot plug detection failures which can be triggered with certain drives if they aren't already spun up when the data connector is hot plugged. Tested on sil, sil24, ahci (jmb/ich), piix and inic162x combined with eight drives from all major vendors. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-05Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-fixes * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-fixes: sched: default to n for GROUP_SCHED and FAIR_GROUP_SCHED sched: add optional support for CONFIG_HAVE_UNSTABLE_SCHED_CLOCK sched, x86: add HAVE_UNSTABLE_SCHED_CLOCK sched: fix cpu clock sched: fair-group: fix a Div0 error of the fair group scheduler sched: fix missing locking in sched_domains code sched: make clock sync tunable by architecture code sched: fix debugging sched: fix sched_info_switch not being called according to documentation sched: fix hrtick_start_fair and CPU-Hotplug sched: fix SCHED_FAIR wake-idle logic error sched: fix RT task-wakeup logic sched: add statics, don't return void expressions sched: add debug checks to idle functions sched: remove old sched doc sched: make rt_sched_class, idle_sched_class static sched: optimize calc_delta_mine() sched: fix normalized sleeper
2008-05-05Merge branch 'powerpc-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'powerpc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] Assign PDE->data before gluing PDE into /proc tree [POWERPC] devres: Add devm_ioremap_prot() [POWERPC] macintosh: ADB driver: adb_handler_sem semaphore to mutex [POWERPC] macintosh: windfarm_smu_sat: semaphore to mutex [POWERPC] macintosh: therm_pm72: driver_lock semaphore to mutex