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2009-04-21driver synchronization: make scsi_wait_scan more advancedArjan van de Ven
There is currently only one way for userspace to say "wait for my storage device to get ready for the modules I just loaded": to load the scsi_wait_scan module. Expectations of userspace are that once this module is loaded, all the (storage) devices for which the drivers were loaded before the module load are present. Now, there are some issues with the implementation, and the async stuff got caught in the middle of this: The existing code only waits for the scsy async probing to finish, but it did not take into account at all that probing might not have begun yet. (Russell ran into this problem on his computer and the fix works for him) This patch fixes this more thoroughly than the previous "fix", which had some bad side effects (namely, for kernel code that wanted to wait for the scsi scan it would also do an async sync, which would deadlock if you did it from async context already.. there's a report about that on lkml): The patch makes the module first wait for all device driver probes, and then it will wait for the scsi parallel scan to finish. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Tested-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21Trivial: fix a typo in slow-work.hJonathan Corbet
Fix a comment typo in slow-work.h ...a trivial mistake, but it will mess up kerneldoc if nothing else. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21PERCPU: Collect the DECLARE/DEFINE declarations togetherDavid Howells
Collect the DECLARE/DEFINE declarations together in linux/percpu-defs.h so that they're in one place, and give them descriptive comments, particularly the SHARED_ALIGNED variant. It would be nice to collect these in linux/percpu.h, but that's not possible without sorting out the severe #include recursion between the x86 arch headers and the general headers (and possibly other arches too). Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21FRV: Fix the section attribute on UP DECLARE_PER_CPU()David Howells
In non-SMP mode, the variable section attribute specified by DECLARE_PER_CPU() does not agree with that specified by DEFINE_PER_CPU(). This means that architectures that have a small data section references relative to a base register may throw up linkage errors due to too great a displacement between where the base register points and the per-CPU variable. On FRV, the .h declaration says that the variable is in the .sdata section, but the .c definition says it's actually in the .data section. The linker throws up the following errors: kernel/built-in.o: In function `release_task': kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o To fix this, DECLARE_PER_CPU() should simply apply the same section attribute as does DEFINE_PER_CPU(). However, this is made slightly more complex by virtue of the fact that there are several variants on DEFINE, so these need to be matched by variants on DECLARE. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21spi: documentation: emphasise spi_master.setup() semanticsDavid Brownell
This is a doc-only patch which I hope will reduce the number of spi_master controller driver patches starting out with a common implementation bug. (As in: almost every spi_master driver I see starts out with its version of this bug. Sigh.) It just re-emphasizes that the setup() method may be called for one device while a transfer is active on another ... which means that most driver implementations shouldn't touch any registers. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21memcg: use rcu_dereference to access mm->ownerKAMEZAWA Hiroyuki
mm->owner should be accessed with rcu_dereference(). Reported-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21ipmi: add oem message handlingdann frazier
Enable userspace to receive messages that a BMC transmits using an OEM medium. This is used by the HP iLO2. Based on code originally written by Patrick Schoeller. Signed-off-by: dann frazier <dannf@hp.com> Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21ipmi: test for event buffer before usingCorey Minyard
The IPMI driver would attempt to use the event buffer even if that didn't exist on the BMC. This patch modified the IPMI driver to check for the event buffer's existence before trying to use it. Signed-off-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21clocksource: add enable() and disable() callbacksMagnus Damm
Add enable() and disable() callbacks for clocksources. This allows us to put unused clocksources in power save mode. The functions clocksource_enable() and clocksource_disable() wrap the callbacks and are inserted in the timekeeping code to enable before use and disable after switching to a new clocksource. Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21clocksource: pass clocksource to read() callbackMagnus Damm
Pass clocksource pointer to the read() callback for clocksources. This allows us to share the callback between multiple instances. [hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods] [akpm@linux-foundation.org: cleanup] Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-21Merge 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: reiserfs: fix j_last_flush_trans_id type fs: Mark get_filesystem_list() as __init function. kill vfs_stat_fd / vfs_lstat_fd Separate out common fstatat code into vfs_fstatat ecryptfs: use memdup_user() ncpfs: use memdup_user() xfs: use memdup_user() sysfs: use memdup_user() btrfs: use memdup_user() xattr: use memdup_user() autofs4: use memchr() in invalid_string() Documentation/filesystems: remove out of date reference to BKL being held Fix i_mutex vs. readdir handling in nfsd fs/compat_ioctl: fix build when !BLOCK Fix autofs_expire() No need for crossing to mountpoint in audit_tag_tree() Safer nfsd_cross_mnt() Touch all affected namespaces on propagation of mount Fix AUTOFS_DEV_IOCTL_REQUESTER_CMD
2009-04-21Fix SYSCALL_ALIAS for older MIPS assemblerThomas Bogendoerfer
Older MIPS assembler don't support .set for defining aliases. Using = works for old and new assembers. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-20reiserfs: fix j_last_flush_trans_id typeAl Viro
Conversion in commit 600ed41675d8c384519d8f0b3c76afed39ef2f4b had missed that one, but converted format from %lu to %u. As the result, /proc/..../journal got buggered on 64bit boxen. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-04-20fs: Mark get_filesystem_list() as __init function.Tetsuo Handa
"int get_filesystem_list(char * buf)" is called by only "static void __init get_fs_names(char *page)". We can mark get_filesystem_list() as "__init". Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-04-20kill vfs_stat_fd / vfs_lstat_fdChristoph Hellwig
There's really no reason to keep vfs_stat_fd and vfs_lstat_fd with Oleg's vfs_fstatat. Use vfs_fstatat for the few cases having the directory fd, and switch all others to vfs_stat / vfs_lstat. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-04-20Separate out common fstatat code into vfs_fstatatOleg Drokin
This is a version incorporating Christoph's suggestion. Separate out common *fstatat functionality into a single function instead of duplicating it all over the code. Signed-off-by: Oleg Drokin <green@linuxhacker.ru> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-04-20Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM/Suspend: Introduce two new platform callbacks to avoid breakage
2009-04-19PM/Suspend: Introduce two new platform callbacks to avoid breakageRafael J. Wysocki
Commit 900af0d973856d6feb6fc088c2d0d3fde57707d3 (PM: Change suspend code ordering) changed the ordering of suspend code in such a way that the platform .prepare() callback is now executed after the device drivers' late suspend callbacks have run. Unfortunately, this turns out to break ARM platforms that need to talk via I2C to power control devices during the .prepare() callback. For this reason introduce two new platform suspend callbacks, .prepare_late() and .wake(), that will be called just prior to disabling non-boot CPUs and right after bringing them back on line, respectively, and use them instead of .prepare() and .finish() for ACPI suspend. Make the PM core execute the .prepare() and .finish() platform suspend callbacks where they were executed previously (that is, right after calling the regular suspend methods provided by device drivers and right before executing their regular resume methods, respectively). It is not necessary to make analogous changes to the hibernation code and data structures at the moment, because they are only used by ACPI platforms. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Len Brown <len.brown@intel.com>
2009-04-19<linux/seccomp.h> needs to include <linux/errno.h>.Ralf Baechle
<linux/seccomp.h> uses EINVAL so should include <linux/errno.h>. This fixes a build error on 64-bit MIPS if CONFIG_SECCOMP is disabled. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: UIO: fix specific device driver missing statement for depmod Driver core: remove pr_fmt() from dynamic_dev_dbg() printk driver core: prevent device_for_each_child from oopsing dynamic debug: resurrect old pr_debug() semantics as pr_devel() Driver Core: early platform driver proc: mounts_poll() make consistent to mdstat_poll sysfs: sysfs poll keep the poll rule of regular file. driver core: allow non-root users to listen to uevents driver core: fix driver_match_device sysfs: don't use global workqueue in sysfs_schedule_callback()
2009-04-17Merge 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) WUSB: correct format of wusb_chid sysfs file WUSB: fix oops when completing URBs for disconnected devices WUSB: disconnect all devices when stopping a WUSB HCD USB: whci-hcd: check return value of usb_hcd_link_urb_to_ep() USB: whci-hcd: provide a endpoint_reset method USB: add reset endpoint operations USB device codes for Motorola phone. usb-storage: fix mistake in Makefile USB: usb-serial ch341: support for DTR/RTS/CTS Revert USB: usb-serial ch341: support for DTR/RTS/CTS USB: musb: fix possible panic while resuming USB: musb: fix isochronous TXDMA (take 2) USB: musb: sanitize clearing TXCSR DMA bits (take 2) USB: musb: bugfixes for multi-packet TXDMA support USB: musb_host, fix ep0 fifo flushing USB: usb-storage: augment unusual_devs entry for Simple Tech/Datafab USB: musb_host, minor enqueue locking fix (v2) USB: fix oops in cdc-wdm in case of malformed descriptors USB: qcserial: Add extra device IDs USB: option: Add ids for D-Link DWM-652 3.5G modem ...
2009-04-17USB: add reset endpoint operationsDavid Vrabel
Wireless USB endpoint state has a sequence number and a current window and not just a single toggle bit. So allow HCDs to provide a endpoint_reset method and call this or clear the software toggles as required (after a clear halt, set configuration etc.). usb_settoggle() and friends are then HCD internal and are moved into core/hcd.h and all device drivers call usb_reset_endpoint() instead. If the device endpoint state has been reset (with a clear halt) but the host endpoint state has not then subsequent data transfers will not complete. The device will only work again after it is reset or disconnected. Signed-off-by: David Vrabel <david.vrabel@csr.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-17Merge 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: ads7846 - fix unsafe disable_irq Input: mainstone-wm97xx - fix condition in pen_up Input: pc110pad - remove unused variable dev Input: bf54x-keys - remove depreciated IRQF_SAMPLE_RANDOM flag Input: ad7877, ad7879 - remove depreciated IRQF_SAMPLE_RANDOM flag Input: da9034-ts - make pen {down,up} events more reliable Input: da9034-ts - add Bin Yang as co-author of the driver Input: atkbd - add forced release keys quirk for Samsung NC20 Input: atkbd - add forced release keys quirk for Samsung Q45 Input: gameport - fix attach driver code Input: hp_sdc_rtc should depend on serio Input: wm97xx - don't specify IRQF_SAMPLE_RANDOM Input: ads7846 - introduce platform specific way to synchronize sampling Input: remove unnecessary synchronize_rcu() call Input: i8042 - add a DMI table for the i8042.reset option Input: i8042 - introduce a tougher reset
2009-04-17Get rid of final remnants of include/asm-$(ARCH)Linus Torvalds
This renames include/asm-h8300/timer.h into arch/h8300/include/asm: it was left over just because that file had been created in the -mm tree before the whole h8300 header subdirectory had been moved, and then got merged in the old location afterwards. (See commits e0b0f9e4ead2468f84c26332ec42b118e76af572: "h8300: update timer handler - new files" and 758db3f2118703a1e36374dae5d58bed963e7e0d: "[h8300] move include/asm-h8300 to arch/h8300/include/asm" for details). This also removes a left-over .gitignore file in include/asm-arm that became stale when the ARM header files were moved (which happened in multiple commits, just see "git log -- include/asm-arm" for details). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-17Merge branch 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_devLinus Torvalds
* 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev: m32r: move include/asm-m32r/* to arch/m32r/include/asm/ m32r: move include/asm-m32r headers to arch/m32r/include/asm
2009-04-17m32r: move include/asm-m32r/* to arch/m32r/include/asm/Hirokazu Takata
Move remained files, ftrace.h and swab.h, to arch/m32r/include/asm/. Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2009-04-17m32r: move include/asm-m32r headers to arch/m32r/include/asmHirokazu Takata
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2009-04-16Merge 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: kernel/softirq.c: fix sparse warning rcu: Make hierarchical RCU less IPI-happy
2009-04-16Driver core: remove pr_fmt() from dynamic_dev_dbg() printkJason Baron
When pr_fmt() was added to the pr_debug() code, we added it not only to the dynamic_pr_debug() function, but also to the dynamic_dev_dbg() funciton. However, dev_dbg() doesn't make use of pr_fmt(), so neither should dynamic_dev_dbg(). Signed-off-by: Jason Baron <jbaron@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-16dynamic debug: resurrect old pr_debug() semantics as pr_devel()Michael Ellerman
pr_debug() used to produce zero code unless DEBUG was #defined. This is now no longer the case in practice[1]. There are places where it's useful to have debugging printks, but we don't want them to generate any code in production kernels. So add a new macro, pr_devel(), for _devel_opment, to provide the old semantics, ie. if the programmer doesn't explicitly enable debugging, no code is produced. [1]: You can turn CONFIG_DYNAMIC_DEBUG off, but it's enabled in at least one distro kernel, so it's not really a solution. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Cc: Jason Baron <jbaron@redhat.com> Cc: Greg Banks <gnb@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-16Driver Core: early platform driverMagnus Damm
V3 of the early platform driver implementation. Platform drivers are great for embedded platforms because we can separate driver configuration from the actual driver. So base addresses, interrupts and other configuration can be kept with the processor or board code, and the platform driver can be reused by many different platforms. For early devices we have nothing today. For instance, to configure early timers and early serial ports we cannot use platform devices. This because the setup order during boot. Timers are needed before the platform driver core code is available. The same goes for early printk support. Early in this case means before initcalls. These early drivers today have their configuration either hard coded or they receive it using some special configuration method. This is working quite well, but if we want to support both regular kernel modules and early devices then we need to have two ways of configuring the same driver. A single way would be better. The early platform driver patch is basically a set of functions that allow drivers to register themselves and architecture code to locate them and probe. Registration happens through early_param(). The time for the probe is decided by the architecture code. See Documentation/driver-model/platform.txt for more details. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Magnus Damm <damm@igel.co.jp> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: David Brownell <david-b@pacbell.net> Cc: Tejun Heo <htejun@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-16ata: Report 16/32bit PIO as best we canAlan Cox
The legacy old IDE ioctl API for this is a bit primitive so we try and map stuff sensibly onto it. - Set PIO over DMA devices to report 32bit - Add ability to change the PIO32 settings if the controller permits it - Add that functionality into the sff drivers - Add that functionality into the VLB legacy driver - Turn on the 32bit PIO on the ninja32 and add support there Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-04-16Merge branch 'next' into for-linusDmitry Torokhov
2009-04-16Add block_write_full_page_endio for passing endio handlerChris Mason
block_write_full_page doesn't allow the caller to control what happens when the IO is over. This adds a new call named block_write_full_page_endio so the buffer head end_io handler can be provided by the caller. This will be used by the ext3 data=guarded mode to do i_size updates in a workqueue based end_io handler. end_buffer_async_write is also exported so it can be called to do the dirty work of managing page writeback for the higher level end_io handler. Signed-off-by: Chris Mason <chris.mason@oracle.com> Acked-by: Theodore Tso <tytso@mit.edu> Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-16Merge 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: (64 commits) phylib: Fix delay argument of schedule_delayed_work NET/ixgbe: Fix powering off during shutdown NET/e1000e: Fix powering off during shutdown NET/e1000: Fix powering off during shutdown packet: avoid warnings when high-order page allocation fails gianfar: stop send queue before resetting gianfar myr10ge: again fix lro_gen_skb() alignment declance: convert to net_device_ops bfin_mac: convert to net_device_ops au1000: convert to net_device_ops atarilance: convert to net_device_ops a2065: convert to net_device_ops ixgbe: update real_num_tx_queues on changing num_rx_queues ixgbe: fix tx queue index Revert "rose: zero length frame filtering in af_rose.c" sfc: Use correct macro to set event bitfield sfc: Match calls to netif_napi_add() and netif_napi_del() bonding: Remove debug printk e1000/e1000: fix compile warning ehea: Fix incomplete conversion to net_device_ops ...
2009-04-15The default CONFIG_BUG=n version of BUG() should have an empty do...whileDavid Howells
The default CONFIG_BUG=n version of BUG() should incorporate an empty a do...while statement to avoid compilation weirdness. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-15Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: hda - Fix the cmd cache keys for amp verbs ALSA: add missing definitions(letters) to HD-Audio.txt ALSA: hda - Add quirk mask for Fujitsu Amilo laptops with ALC883 [ALSA] intel8x0: add one retry to the ac97_clock measurement routine [ALSA] intel8x0: fix wrong conditions in ac97_clock measure routine ALSA: hda - Avoid call of snd_jack_report at release ALSA: add private_data to struct snd_jack ALSA: snd-usb-caiaq: rename files to remove redundant information in file pathes ALSA: snd-usb-caiaq: clean up header includes ALSA: sound/pci: use memdup_user() ALSA: sound/usb: use memdup_user() ALSA: sound/isa: use memdup_user() ALSA: sound/core: use memdup_user() [ALSA] intel8x0: do not use zero value from PICB register [ALSA] intel8x0: an attempt to make ac97_clock measurement more reliable [ALSA] pcm-midlevel: Add more strict buffer position checks based on jiffies [ALSA] hda_intel: fix unexpected ring buffer positions ASoC: Disable S3C64xx support in Kconfig ASoC: magician: remove un-necessary #include of pxa-regs.h and hardware.h
2009-04-15Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: (28 commits) cfq-iosched: add close cooperator code cfq-iosched: log responsible 'cfqq' in idle timer arm cfq-iosched: tweak kick logic a bit more cfq-iosched: no need to save interrupts in cfq_kick_queue() brd: fix cacheflushing brd: support barriers swap: Remove code handling bio_alloc failure with __GFP_WAIT gfs2: Remove code handling bio_alloc failure with __GFP_WAIT ext4: Remove code handling bio_alloc failure with __GFP_WAIT dio: Remove code handling bio_alloc failure with __GFP_WAIT block: Remove code handling bio_alloc failure with __GFP_WAIT bio: add documentation to bio_alloc() splice: add helpers for locking pipe inode splice: remove generic_file_splice_write_nolock() ocfs2: fix i_mutex locking in ocfs2_splice_to_file() splice: fix i_mutex locking in generic_splice_write() splice: remove i_mutex locking in splice_from_pipe() splice: split up __splice_from_pipe() block: fix SG_IO to return a proper error value cfq-iosched: don't delay queue kick for a merged request ...
2009-04-15Merge 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: powerpc: pseries/dtl.c should include asm/firmware.h powerpc: Fix data-corrupting bug in __futex_atomic_op powerpc/pseries: Set error_state to pci_channel_io_normal in eeh_report_reset() powerpc: Allow 256kB pages with SHMEM powerpc: Document new FSL I2C bindings and cleanup powerpc/mm: Fix compile warning powerpc/85xx: TQM8548: update defconfig powerpc/85xx: TQM8548: use proper phy-handles for enet2 and enet3 powerpc/85xx: TQM85xx: correct address of LM75 I2C device nodes powerpc: Add support for early tlbilx opcode powerpc: Fix tlbilx opcode
2009-04-15splice: add helpers for locking pipe inodeMiklos Szeredi
There are lots of sequences like this, especially in splice code: if (pipe->inode) mutex_lock(&pipe->inode->i_mutex); /* do something */ if (pipe->inode) mutex_unlock(&pipe->inode->i_mutex); so introduce helpers which do the conditional locking and unlocking. Also replace the inode_double_lock() call with a pipe_double_lock() helper to avoid spreading the use of this functionality beyond the pipe code. This patch is just a cleanup, and should cause no behavioral changes. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-04-15splice: remove generic_file_splice_write_nolock()Miklos Szeredi
Remove the now unused generic_file_splice_write_nolock() function. It's conceptually broken anyway, because splice may need to wait for pipe events so holding locks across the whole operation is wrong. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-04-15ocfs2: fix i_mutex locking in ocfs2_splice_to_file()Miklos Szeredi
Rearrange locking of i_mutex on destination and call to ocfs2_rw_lock() so locks are only held while buffers are copied with the pipe_to_file() actor, and not while waiting for more data on the pipe. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-04-15splice: split up __splice_from_pipe()Miklos Szeredi
Split up __splice_from_pipe() into four helper functions: splice_from_pipe_begin() splice_from_pipe_next() splice_from_pipe_feed() splice_from_pipe_end() splice_from_pipe_next() will wait (if necessary) for more buffers to be added to the pipe. splice_from_pipe_feed() will feed the buffers to the supplied actor and return when there's no more data available (or if all of the requested data has been copied). This is necessary so that implementations can do locking around the non-waiting splice_from_pipe_feed(). This patch should not cause any change in behavior. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-04-15Merge branch 'topic/hda' into for-linusTakashi Iwai
* topic/hda: ALSA: hda - Add quirk mask for Fujitsu Amilo laptops with ALC883 ALSA: hda - Avoid call of snd_jack_report at release ALSA: add private_data to struct snd_jack
2009-04-15Merge branch 'topic/jack-free-fix' into topic/hdaTakashi Iwai
* topic/jack-free-fix: ALSA: hda - Avoid call of snd_jack_report at release ALSA: add private_data to struct snd_jack
2009-04-15Merge branch 'master' of git://git.alsa-project.org/alsa-kernel into for-linusTakashi Iwai
* 'master' of git://git.alsa-project.org/alsa-kernel: [ALSA] intel8x0: add one retry to the ac97_clock measurement routine [ALSA] intel8x0: fix wrong conditions in ac97_clock measure routine [ALSA] intel8x0: do not use zero value from PICB register [ALSA] intel8x0: an attempt to make ac97_clock measurement more reliable [ALSA] pcm-midlevel: Add more strict buffer position checks based on jiffies [ALSA] hda_intel: fix unexpected ring buffer positions
2009-04-15Document and move the various READ/WRITE typesJens Axboe
It's a somewhat twisty maze of hints and behavioural modifiers, try and clear it up a bit with some documentation. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-04-15block: move bio list helpers into bio.hChristoph Hellwig
It's used by DM and MD and generally useful, so move the bio list helpers into bio.h. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-04-14Merge branch 'drm-intel-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel * 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: drm/i915: fix scheduling while holding the new active list spinlock drm/i915: Allow tiling of objects with bit 17 swizzling by the CPU. drm/i915: Correctly set the write flag for get_user_pages in pread. drm/i915: Fix use of uninitialized var in 40a5f0de drm/i915: indicate framebuffer restore key in SysRq help message drm/i915: sync hdmi detection by hdmi identifier with 2D drm/i915: Fix a mismerge of the IGD patch (new .find_pll hooks missed) drm/i915: Implement batch and ring buffer dumping
2009-04-14Merge 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: lockdep: warn about lockdep disabling after kernel taint, fix