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2010-06-03pipe: change /proc/sys/fs/pipe-max-pages to byte sized interfaceJens Axboe
This changes the interface to be based on bytes instead. The API matches that of F_SETPIPE_SZ in that it rounds up the passed in size so that the resulting page array is a power-of-2 in size. The proc file is renamed to /proc/sys/fs/pipe-max-size to reflect this change. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-03pipe: change the privilege required for growing a pipe beyond system maxJens Axboe
Change it to CAP_SYS_RESOURCE, as that more accurately models what we want to control. Suggested-by: Michael Kerrisk <mtk.manpages@googlemail.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-03pipe: adjust minimum pipe size to 1 pageJens Axboe
We don't need to pages to guarantee the POSIX requirement that upto a page size write must be atomic to an empty pipe. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01Merge branch 'master' into for-linusJens Axboe
Conflicts: fs/pipe.c Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01block: disable preemption before using sched_clock()Jens Axboe
Commit 9195291e5f05e01d67f9a09c756b8aca8f009089 added calls to sched_clock() from preemptible code. sched_clock() is both the wrong interface AND cannot be called without preempt disabled. Apply a temporary fix to get rid of the warnings, a real patch is in the works. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01cciss: call BUG() earlierDan Carpenter
I moved the range check after the increment. The current code would write past the end of the array once before calling BUG(). Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01Preparing 8.3.8rc2Philipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01drbd: Reduce verbosityPhilipp Reisner
The "Local READ/WRITE failed" messages are too verbose. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01drbd: use drbd specific ratelimit instead of global printk_ratelimitLars Ellenberg
using the global printk_ratelimit() may mask other messages. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01drbd: fix hang on local read errors while disconnectedLars Ellenberg
"canceled" w_read_retry_remote never completed, if they have been canceled after drbd_disconnect connection teardown cleanup has already run (or we are currently not connected anyways). Fixed by not queueing a remote retry if we already know it won't work (pdsk not uptodate), and cleanup ourselves on "cancel", in case we hit a race with drbd_disconnect. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01drbd: Removed the now empty w_io_error() functionPhilipp Reisner
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01drbd: removed duplicated #includesAndrea Gelmini
drbd/drbd_receiver.c: linux/mm.h is included more than once. Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01drbd: improve usage of MSG_MORELars Ellenberg
It seems to improve performance if we allow the "p_data" header in its own frame (no MSG_MORE), but sendpage all but the last page with MSG_MORE. This is also in preparation of a later zero copy receive implementation. Suggested by Eduard.Guzovsky@stratus.com on drbd-dev. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01drbd: need to set socket bufsize early to take effectLars Ellenberg
quoting tcp(7): On individual connections, the socket buffer size must be set prior to the listen(2) or connect(2) calls in order to have it take effect. This adds a wrapper to do so, and uses it appropriately. Improves performance in certain situations. Note that because we cannot easily determine which socket will be "meta" and wich "data" (bulk) socket, we adjust both sockets. Previously, DRBD only adjusted the bufsizes of the "data" socket. Thanks again to Eduard.Guzovsky@stratus.com. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01drbd: improve network latency, TCP_QUICKACKLars Ellenberg
On Thu, Apr 29, 2010 at 04:00:50PM -0400, Eduard.Guzovsky@stratus.com wrote on drbd-dev@lists.linbit.com Subject: [Drbd-dev] DRBD small synchronous writes performance improvements > 1. TCP_QUICKACK option is set incorrectly. The goal was force TCP to > send and ACK as a "one time" event. Instead the code permanently sets > connection in the QUICKACK mode. He is right, we actually want to use an even val with TCP_QUICKACK. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01drbd: Revert "drbd: Create new current UUID as late as possible"Philipp Reisner
The late-UUID writing is delayed until the next release. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01brd: support discardNick Piggin
Support discard requests in brd by zeroing or deleting the underlying backing pages. This is simply to help with testing and documentation nature of brd code. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-06-01Revert "writeback: fix WB_SYNC_NONE writeback from umount"Jens Axboe
This reverts commit e913fc825dc685a444cb4c1d0f9d32f372f59861. We are investigating a hang associated with the WB_SYNC_NONE changes, so revert them for now. Conflicts: fs/fs-writeback.c mm/page-writeback.c Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-06-01Revert "writeback: ensure that WB_SYNC_NONE writeback with sb pinned is sync"Jens Axboe
This reverts commit 7c8a3554c683f512dbcee26faedb42e4c05f12fa. We are investigating a hang associated with the WB_SYNC_NONE changes, so revert them for now. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-05-30Linux 2.6.35-rc1Linus Torvalds
.. and thus endeth the merge window.
2010-05-30Merge branch 'slub/urgent' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6 * 'slub/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: SLUB: Allow full duplication of kmalloc array for 390 slub: move kmem_cache_node into it's own cacheline
2010-05-30Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: mutex: Fix optimistic spinning vs. BKL
2010-05-30Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf tui: Fix last use_browser problem related to .perfconfig perf symbols: Add the build id cache to the vmlinux path perf tui: Reset use_browser if stdout is not a tty ring-buffer: Move zeroing out excess in page to ring buffer code ring-buffer: Reset "real_end" when page is filled
2010-05-30ia64: revert __node_random additionLinus Torvalds
This partially reverts commit 4ec37de89d8c758ee8115e0e64b3f994910789ee ("[IA64] Fix build breakage"), since the commit that made it necessary got reverted earlier (see commit 35926ff5fba8, 'Revert "cpusets: randomize node rotor used in cpuset_mem_spread_node()"') Even if we ever re-introduce this, there is no reason to make __node_random be some architecture-specific function. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: mm: export generic_pipe_buf_*() to modules fuse: support splice() reading from fuse device fuse: allow splice to move pages mm: export remove_from_page_cache() to modules mm: export lru_cache_add_*() to modules fuse: support splice() writing to fuse device fuse: get page reference for readpages fuse: use get_user_pages_fast() fuse: remove unneeded variable
2010-05-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-kconfig * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-kconfig: kconfig: Hide error output in find command in streamline_config.pl kconfig: Fix typo in comment in streamline_config.pl kconfig: Make a variable local in streamline_config.pl
2010-05-30Merge branch 'for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6 * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (47 commits) mfd: Rename twl5031 sih modules mfd: Storage class for timberdale should be before const qualifier mfd: Remove unneeded and dangerous clearing of clientdata mfd: New AB8500 driver gpio: Fix inverted rdc321x gpio data out registers mfd: Change rdc321x resources flags to IORESOURCE_IO mfd: Move pcf50633 irq related functions to its own file. mfd: Use threaded irq for pcf50633 mfd: pcf50633-adc: Fix potential race in pcf50633_adc_sync_read mfd: Fix pcf50633 bitfield logic in interrupt handler gpio: rdc321x needs to select MFD_CORE mfd: Use menuconfig for quicker config editing ARM: AB3550 board configuration and irq for U300 mfd: AB3550 core driver mfd: AB3100 register access change to abx500 API mfd: Renamed ab3100.h to abx500.h gpio: Add TC35892 GPIO driver mfd: Add Toshiba's TC35892 MFD core mfd: Delay to mask tsc irq in max8925 mfd: Remove incorrect wm8350 kfree ...
2010-05-30Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: DMAENGINE: DMA40 U8500 platform configuration DMA: PL330: Add dma api driver
2010-05-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/qib: Remove DCA support until feature is finished IB/qib: Use a single txselect module parameter for serdes tuning IB/qib: Don't rely on (undefined) order of function parameter evaluation IB/ucm: Use memdup_user() IB/qib: Fix undefined symbol error when CONFIG_PCI_MSI=n
2010-05-30Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: quota: Convert quota statistics to generic percpu_counter ext3 uses rb_node = NULL; to zero rb_root. quota: Fixup dquot_transfer reiserfs: Fix resuming of quotas on remount read-write pohmelfs: Remove dead quota code ufs: Remove dead quota code udf: Remove dead quota code quota: rename default quotactl methods to dquot_ quota: explicitly set ->dq_op and ->s_qcop quota: drop remount argument to ->quota_on and ->quota_off quota: move unmount handling into the filesystem quota: kill the vfs_dq_off and vfs_dq_quota_on_remount wrappers quota: move remount handling into the filesystem ocfs2: Fix use after free on remount read-only Fix up conflicts in fs/ext4/super.c and fs/ufs/file.c
2010-05-30Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, cpufeature: Unbreak compile with gcc 3.x x86, pat: Fix memory leak in free_memtype x86, k8: Fix section mismatch for powernowk8_exit() lib/atomic64_test: fix missing include of linux/kernel.h x86: remove last traces of quicklist usage x86, setup: Phoenix BIOS fixup is needed on Dell Inspiron Mini 1012 x86: "nosmp" command line option should force the system into UP mode arch/x86/pci: use kasprintf x86, apic: ack all pending irqs when crashed/on kexec
2010-05-30CPU: Avoid using unititialized error variable in disable_nonboot_cpus()Rafael J. Wysocki
If there's only one CPU online when disable_nonboot_cpus() is called, the error variable will not be initialized and that may lead to erroneous behavior. Fix this issue by initializing error in disable_nonboot_cpus() as appropriate. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-30rapidio: fix new kernel-doc warningsRandy Dunlap
Fix a bunch of new rapidio kernel-doc warnings: Warning(include/linux/rio.h:123): No description found for parameter 'comp_tag' Warning(include/linux/rio.h:123): No description found for parameter 'phys_efptr' Warning(include/linux/rio.h:123): No description found for parameter 'em_efptr' Warning(include/linux/rio.h:123): No description found for parameter 'pwcback' Warning(include/linux/rio.h:247): No description found for parameter 'set_domain' Warning(include/linux/rio.h:247): No description found for parameter 'get_domain' Warning(drivers/rapidio/rio-scan.c:1133): No description found for parameter 'rdev' Warning(drivers/rapidio/rio-scan.c:1133): Excess function parameter 'port' description in 'rio_init_em' Warning(drivers/rapidio/rio.c:349): No description found for parameter 'rdev' Warning(drivers/rapidio/rio.c:349): Excess function parameter 'mport' description in 'rio_request_inb_pwrite' Warning(drivers/rapidio/rio.c:393): No description found for parameter 'port' Warning(drivers/rapidio/rio.c:393): No description found for parameter 'local' Warning(drivers/rapidio/rio.c:393): No description found for parameter 'destid' Warning(drivers/rapidio/rio.c:393): No description found for parameter 'hopcount' Warning(drivers/rapidio/rio.c:393): Excess function parameter 'rdev' description in 'rio_mport_get_physefb' Warning(drivers/rapidio/rio.c:845): Excess function parameter 'local' description in 'rio_std_route_clr_table' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Alexandre Bounine <alexandre.bounine@idt.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-30Merge branch 'fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6 * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6: parisc: Call pagefault_disable/pagefault_enable in kmap_atomic/kunmap_atomic parisc: Remove unnecessary macros from entry.S parisc: LWS fixes for syscall.S parisc: Delete unnecessary nop's in entry.S parisc: Avoid interruption in critical region in entry.S parisc: invoke oom-killer from page fault parisc: clear floating point exception flag on SIGFPE signal parisc: Use of align_frame provides stack frame.
2010-05-30Revert "cpusets: randomize node rotor used in cpuset_mem_spread_node()"Linus Torvalds
This reverts commit 0ac0c0d0f837c499afd02a802f9cf52d3027fa3b, which caused cross-architecture build problems for all the wrong reasons. IA64 already added its own version of __node_random(), but the fact is, there is nothing architectural about the function, and the original commit was just badly done. Revert it, since no fix is forthcoming. Requested-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: ceph: clean up on forwarded aborted mds request ceph: fix leak of osd authorizer ceph: close out mds, osd connections before stopping auth ceph: make lease code DN specific fs/ceph: Use ERR_CAST ceph: renew auth tickets before they expire ceph: do not resend mon requests on auth ticket renewal ceph: removed duplicated #includes ceph: avoid possible null dereference ceph: make mds requests killable, not interruptible sched: add wait_for_completion_killable_timeout
2010-05-30SLUB: Allow full duplication of kmalloc array for 390Christoph Lameter
Commit 756dee75872a2a764b478e18076360b8a4ec9045 ("SLUB: Get rid of dynamic DMA kmalloc cache allocation") makes S390 run out of kmalloc caches. Increase the number of kmalloc caches to a safe size. Cc: <stable@kernel.org> [ .33 and .34 ] Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com> Tested-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
2010-05-30parisc: Call pagefault_disable/pagefault_enable in kmap_atomic/kunmap_atomicJohn David Anglin
Based on the generic implementation of kmap_atomic and kunmap_atomic, we should call pagefault_disable and pagefault_enable in our PA8000 implementation. The define for kmap_atomic_prot was also missing, and I updated kmap_atomic_pfn to use the generic implementation because of the change to kmap_atomic. I believe that this change is needed to fix the fork copy-on-write bug. Signed-off-by: John David Anglin <dave.anglin@nrc-cnrc.gc.ca> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2010-05-30parisc: Remove unnecessary macros from entry.SJohn David Anglin
The EXTR, DEP and DEPI macros are unnecessary. There are PA 1.X pneumonics available with the same functionality, and the DEP and DEPI macros conflict with assembler pneumonics. Tested on a variety of 32 and 64-bit systems. Signed-off-by: John David Anglin <dave.anglin@nrc-cnrc.gc.ca> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2010-05-30parisc: LWS fixes for syscall.SJohn David Anglin
1) Gate immediately and save a branch. 2) Fix off by one error in checking entry number. 3) Use sr7 instead of sr3 in error return path as sr3 might not contain correct value. 4) Enable locking on UP systems to prevent incorrect operation of the cas_action critical region on page faults. Tested on several systems, including UP c3750 with 2.6.33.2 kernel. Signed-off-by: John David Anglin <dave.anglin@nrc-cnrc.gc.ca> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2010-05-30parisc: Delete unnecessary nop's in entry.SJohn David Anglin
Signed-off-by: John David Anglin <dave.anglin@nrc-cnrc.gc.ca> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2010-05-30parisc: Avoid interruption in critical region in entry.SJohn David Anglin
Signed-off-by: John David Anglin <dave.anglin@nrc-cnrc.gc.ca> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2010-05-30parisc: invoke oom-killer from page faultNick Piggin
As explained in commit 1c0fe6e3bd, we want to call the architecture independent oom killer when getting an unexplained OOM from handle_mm_fault, rather than simply killing current. Cc: linux-parisc@vger.kernel.org Cc: linux-arch@vger.kernel.org Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2010-05-30parisc: clear floating point exception flag on SIGFPE signalHelge Deller
Clear the floating point exception flag before returning to user space. This is needed, else the libc trampoline handler may hit the same SIGFPE again while building up a trampoline to a signal handler. Fixes debian bug #559406. Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
2010-05-30parisc: Use of align_frame provides stack frame.Carlos O'Donell
Any assembly constant generated with the use of align_frame includes size for a full stack frame. Signed-off-by: Carlos O'Donell <carlos@systemhalted.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2010-05-29Merge 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: (26 commits) ALSA: snd-usb-caiaq: Bump version number to 1.3.21 ALSA: Revert "ALSA: snd-usb-caiaq: Set default input mode of A4DJ" ALSA: snd-usb-caiaq: Simplify single case to an 'if' ALSA: snd-usb-caiaq: Restore 'Control vinyl' input mode on A4DJ ALSA: hda: Use LPIB for a Shuttle device ALSA: hda: Add support for another Lenovo ThinkPad Edge in conexant codec ALSA: hda: Use LPIB for Sony VPCS11V9E ALSA: usb-audio: fix feature unit parser for UAC2 ALSA: asihpi - Minor code cleanup ALSA: asihpi - Add support for new ASI8800 family ALSA: asihpi - Fix bug preventing outstream_write preload from happening ALSA: asihpi - Fix imbalanced lock path in hw_message ALSA: asihpi - Remove support for old ASI8800 family ALSA: asihpi - Add hd radio blend functions ALSA: asihpi - Remove unused io map functions ALSA: usb-audio: add support for UAC2 pitch control ALSA: usb-audio: parse UAC2 endpoint descriptors correctly ALSA: usb-audio: fix return values ALSA: usb-audio: parse more format descriptors with structs sound: Add missing spin_unlock ...
2010-05-29Merge branch 'fix/hda' into for-linusTakashi Iwai
2010-05-29Merge branch 'fix/misc' into for-linusTakashi Iwai
2010-05-29Merge branch 'fix/asoc' into for-linusTakashi Iwai
2010-05-29ALSA: snd-usb-caiaq: Bump version number to 1.3.21Mark Hills
Acked-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Mark Hills <mark@pogo.org.uk> Signed-off-by: Takashi Iwai <tiwai@suse.de>