AgeCommit message (Collapse)Author
2007-06-16Linux 2.6.22-rc5v2.6.22-rc5Linus Torvalds
The manatees, they are dancing! Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16shm: fix the filename of hugetlb sysv shared memoryEric W. Biederman
Some user space tools need to identify SYSV shared memory when examining /proc/<pid>/maps. To do so they look for a block device with major zero, a dentry named SYSV<sysv key>, and having the minor of the internal sysv shared memory kernel mount. To help these tools and to make it easier for people just browsing /proc/<pid>/maps this patch modifies hugetlb sysv shared memory to use the SYSV<key> dentry naming convention. User space tools will still have to be aware that hugetlb sysv shared memory lives on a different internal kernel mount and so has a different block device minor number from the rest of sysv shared memory. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: "Serge E. Hallyn" <serge@hallyn.com> Cc: Albert Cahalan <acahalan@gmail.com> Cc: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16hugetlb: fix get_policy for stacked shared memory filesAdam Litke
Here's another breakage as a result of shared memory stacked files :( The NUMA policy for a VMA is determined by checking the following (in the order given): 1) vma->vm_ops->get_policy() (if defined) 2) vma->vm_policy (if defined) 3) task->mempolicy (if defined) 4) Fall back to default_policy By switching to stacked files for shared memory, get_policy() is now always set to shm_get_policy which is a wrapper function. This causes us to stop at step 1, which yields NULL for hugetlb instead of task->mempolicy which was the previous (and correct) result. This patch modifies the shm_get_policy() wrapper to maintain steps 1-3 for the wrapped vm_ops. (akpm: the refcounting of mempolicies is busted and this patch does nothing to improve it) Signed-off-by: Adam Litke <agl@us.ibm.com> Acked-by: William Irwin <bill.irwin@oracle.com> Cc: dean gaudet <dean@arctic.org> Cc: Christoph Lameter <clameter@sgi.com> Cc: Andi Kleen <ak@suse.de> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16udf: fix possible leakage of blocksJan Kara
We have to take care that when we call udf_discard_prealloc() from udf_clear_inode() we have to write inode ourselves afterwards (otherwise, some changes might be lost leading to leakage of blocks, use of free blocks or improperly aligned extents). Also udf_discard_prealloc() does two different things - it removes preallocated blocks and truncates the last extent to exactly match i_size. We move the latter functionality to udf_truncate_tail_extent(), call udf_discard_prealloc() when last reference to a file is dropped and call udf_truncate_tail_extent() when inode is being removed from inode cache (udf_clear_inode() call). We cannot call udf_truncate_tail_extent() earlier as subsequent open+write would find the last block of the file mapped and happily write to the end of it, although the last extent says it's shorter. [akpm@linux-foundation.org: Make checkpatch.pl happier] Signed-off-by: Jan Kara <jack@suse.cz> Cc: Eric Sandeen <sandeen@sandeen.net> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16SLUB: minimum alignment fixesChristoph Lameter
If ARCH_KMALLOC_MINALIGN is set to a value greater than 8 (SLUBs smallest kmalloc cache) then SLUB may generate duplicate slabs in sysfs (yes again) because the object size is padded to reach ARCH_KMALLOC_MINALIGN. Thus the size of the small slabs is all the same. No arch sets ARCH_KMALLOC_MINALIGN larger than 8 though except mips which for some reason wants a 128 byte alignment. This patch increases the size of the smallest cache if ARCH_KMALLOC_MINALIGN is greater than 8. In that case more and more of the smallest caches are disabled. If we do that then the count of the active general caches that is displayed on boot is not correct anymore since we may skip elements of the kmalloc array. So count them separately. This approach was tested by Havard yesterday. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16Rework ptep_set_access_flags and fix sun4cBenjamin Herrenschmidt
Some changes done a while ago to avoid pounding on ptep_set_access_flags and update_mmu_cache in some race situations break sun4c which requires update_mmu_cache() to always be called on minor faults. This patch reworks ptep_set_access_flags() semantics, implementations and callers so that it's now responsible for returning whether an update is necessary or not (basically whether the PTE actually changed). This allow fixing the sparc implementation to always return 1 on sun4c. [akpm@linux-foundation.org: fixes, cleanups] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Hugh Dickins <hugh@veritas.com> Cc: David Miller <davem@davemloft.net> Cc: Mark Fortescue <mark@mtfhpc.demon.co.uk> Acked-by: William Lee Irwin III <wli@holomorphy.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16random: fix output buffer foldingMatt Mackall
(As reported by linux@horizon.com) Folding is done to minimize the theoretical possibility of systematic weakness in the particular bits of the SHA1 hash output. The result of this bug is that 16 out of 80 bits are un-folded. Without a major new vulnerability being found in SHA1, this is harmless, but still worth fixing. Signed-off-by: Matt Mackall <mpm@selenic.com> Cc: <linux@horizon.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16uml: kill x86_64 STACK_TOP_MAXJeff Dike
The x86_64 a.out.h got a definition of STACK_TOP_MAX, which interferes with the UML version. So, just undef it like STACK_TOP. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16uml: remove PAGE_SIZE from libc codeJeff Dike
Distros seem to be removing PAGE_SIZE from asm/page.h. So, the libc side of UML should stop using it. I replace it with UM_KERN_PAGE_SIZE, which is defined to be the same as PAGE_SIZE on the kernel side of the house. I could also use getpagesize(), but it's more important that UML have the same value of PAGE_SIZE everywhere. It's conceivable that it could be built with a larger PAGE_SIZE, and use of getpagesize() would break that badly. PAGE_MASK got the same treatment, as it is closely tied to PAGE_SIZE. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16spi doc updatesDavid Brownell
Update two points in the SPI interface documentation: - Update description of the "chip stays selected after message ends" mode. In some cases it's required for correctness; it isn't just a performance tweak. (Yes: to use this mode on mult-device busses, another programming interface will be needed. One draft has been circulated already.) - Clarify spi_setup(), highlighting that callers must ensure that no requests are queued (can't change configuration except between I/Os), and that the device must be deselected when this returns (which is a key part of why it's called during device init). 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>
2007-06-16md: fix bug in error handling during raid1 repairMike Accetta
If raid1/repair (which reads all block and fixes any differences it finds) hits a read error, it doesn't reset the bio for writing before writing correct data back, so the read error isn't fixed, and the device probably gets a zero-length write which it might complain about. Signed-off-by: Neil Brown <neilb@suse.de> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16md: fix two raid10 bugsNeilBrown
1/ When resyncing a degraded raid10 which has more than 2 copies of each block, garbage can get synced on top of good data. 2/ We round the wrong way in part of the device size calculation, which can cause confusion. Signed-off-by: Neil Brown <neilb@suse.de> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16fuse: ->fs_flags fixletAlexey Dobriyan
fs/fuse/inode.c:658:3: error: Initializer entry defined twice fs/fuse/inode.c:661:3: also defined here Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16perfctr-watchdog: fix interchanged parameters to release_{evntsel,perfctr}_nmiBjörn Steinbrink
Fix oops triggered during: echo 0 > /proc/sys/kernel/nmi_watchdog The culprit seems to be 09198e68501a7e34737cd9264d266f42429abcdc: [PATCH] i386: Clean up NMI watchdog code In two places, the parameters to release_{evntsel,perfctr}_nmi got interchanged during the cleanup. Fix interchanged parameters to release_{evntsel,perfctr}_nmi. Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de> Cc: Stephane Eranian <eranian@hpl.hp.com> Cc: Andi Kleen <ak@suse.de> Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16swsusp: Fix userland interfaceRafael J. Wysocki
Fix oops caused by 'cat /dev/snapshot', reported by Arkadiusz Miskiewicz, and make it impossible to thaw tasks with the help of the swsusp userland interface while there is a snapshot image ready to save. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16toshiba_acpi: fix section mismatch in allyesconfigRandy Dunlap
Fix section error (allyesconfig). The exit function is called from init, so functions that are called by the exit function cannot be marked __exit. WARNING: drivers/built-in.o(.text+0xe5bc6): Section mismatch: reference to .exit. text: (between 'toshiba_acpi_exit' and 'hci_raw') Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Len Brown <len.brown@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16cpuset: zero malloc - fix for old cpusetsPaul Jackson
The cpuset code to present a list of tasks using a cpuset to user space could write to an array that it had kmalloc'd, after a kmalloc request of zero size. The problem was that the code didn't check for writes past the allocated end of the array until -after- the first write. This is a race condition that is likely rare -- it would only show up if a cpuset went from being empty to having a task in it, during the brief time between the allocation and the first write. Prior to roughly 2.6.22 kernels, this was also a benign problem, because a zero kmalloc returned a few usable bytes anyway, and no harm was done with the bogus write. With the 2.6.22 kernel changes to make issue a warning if code tries to write to the location returned from a zero size allocation, this problem is no longer benign. This cpuset code would occassionally trigger that warning. The fix is trivial -- check before storing into the array, not after, whether the array is big enough to hold the store. Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: "Serge E. Hallyn" <serue@us.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Kirill Korotaev <dev@openvz.org> Cc: Paul Menage <menage@google.com> Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com> Cc: Christoph Lameter <clameter@sgi.com> Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16i386 mm: use pte_update() in ptep_test_and_clear_dirty()Hugh Dickins
It is not safe to use pte_update_defer() in ptep_test_and_clear_young(): its only user, /proc/<pid>/clear_refs, drops pte lock before flushing TLB. Use the safe though less efficient pte_update() paravirtop in its place. Likewise in ptep_test_and_clear_dirty(), though that has no current use. These are macros (header file dependency stops them from becoming inline functions), so be more liberal with the underscores and parentheses. Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: Zachary Amsden <zach@vmware.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16Restore shmid as inode# to fix /proc/pid/maps ABI breakageBadari Pulavarty
shmid used to be stored as inode# for shared memory segments. Some of the proc-ps tools use this from /proc/pid/maps. Recent cleanups to newseg() changed it. This patch sets inode number back to shared memory id to fix breakage. Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Cc: "Albert Cahalan" <acahalan@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16SLUB slab validation: Alloc while interrupts are disabled must use GFP_ATOMICChristoph Lameter
The data structure to manage the information gathered about functions allocating and freeing objects is allocated when the list_lock has already been taken. We need to allocate with GFP_ATOMIC instead of GFP_KERNEL. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16i386: use the right wrapper to disable the NMI watchdogBjörn Steinbrink
When disabled through /proc/sys/kernel/nmi_watchdog, the NMI watchdog uses the stop() method directly, which does not decrement the activity counter, leading to a BUG(). Use the wrapper function instead to fix that. Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16i386: fix NMI watchdog not reserving its MSRsBjörn Steinbrink
At system boot time, the NMI watchdog no longer reserved its MSRs, allowing other subsystems to mess with them. Fix that. Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16tty: restore locked ioctl file opPaul Fulghum
Restore tty locked ioctl handler which was replaced with an unlocked ioctl handler in hung_up_tty_fops by the patch: commit e10cc1df1d2014f68a4bdcf73f6dd122c4561f94 Author: Paul Fulghum <paulkf@microgate.com> Date: Thu May 10 22:22:50 2007 -0700 tty: add compat_ioctl This was reported in: [Bug 8473] New: Oops: 0010 [1] SMP The bug is caused by switching to hung_up_tty_fops in do_tty_hangup. An ioctl call can be waiting on BLK after testing for existence of the locked ioctl handler in the normal tty fops, but before calling the locked ioctl handler. If a hangup occurs at that point, the locked ioctl fop is NULL and an oops occurs. (akpm: we can remove my debugging code from do_ioctl() now, but it'll be OK to do that for 2.6.23) Signed-off-by: Paul Fulghum <paulkf@microgate.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-16fix radeon setparam on 32/64 systems, harder.David Woodhouse
Commit 9b01bd5b284bbf519b726b39f1352023cb5e9e69 introduced a compat_ioctl handler for RADEON_SETPARAM, the sole purpose of which was to handle the fact that on i386, alignof(uint64_t)==4. Unfortunately, this handler was installed for _all_ 64-bit architectures, instead of only x86_64 and ia64. And thus it breaks 32-bit compatibility on every other arch, where 64-bit integers are aligned to 8 bytes in 32-bit mode just the same as in 64-bit mode. Arnd has a cunning plan to use 'compat_u64' with appropriate alignment attributes according to the 32-bit ABI, but for now let's just make the compat_radeon_cp_setparam routine entirely disappear on 64-bit machines whose 32-bit compat support isn't for i386. It would be a no-op with compat_u64 anyway. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Dave Airlie <airlied@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-15Merge master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6: ide-scsi: fix OOPS in idescsi_expiry() Resume from RAM on HPC nx6325 broken
2007-06-16ide-scsi: fix OOPS in idescsi_expiry()Bartlomiej Zolnierkiewicz
drive->driver_data contains pointer to Scsi_Host not idescsi_scsi_t. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-06-16Resume from RAM on HPC nx6325 brokenRafael J. Wysocki
generic_ide_resume() should check if dev->driver is not NULL before applying to_ide_driver() to it. Fix that. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-06-15Merge branch 'master' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [RXRPC] net/rxrpc/ar-connection.c: fix NULL dereference [TCP]: Fix logic breakage due to DSACK separation [TCP]: Congestion control API RTT sampling fix
2007-06-15mm: Fix memory/cpu hotplug section mismatch and oops.Paul Mundt
When building with memory hotplug enabled and cpu hotplug disabled, we end up with the following section mismatch: WARNING: mm/built-in.o(.text+0x4e58): Section mismatch: reference to .init.text: (between 'free_area_init_node' and '__build_all_zonelists') This happens as a result of: -> free_area_init_node() -> free_area_init_core() -> zone_pcp_init() <-- all __meminit up to this point -> zone_batchsize() <-- marked as __cpuinit fo This happens because CONFIG_HOTPLUG_CPU=n sets __cpuinit to __init, but CONFIG_MEMORY_HOTPLUG=y unsets __meminit. Changing zone_batchsize() to __devinit fixes this. __devinit is the only thing that is common between CONFIG_HOTPLUG_CPU=y and CONFIG_MEMORY_HOTPLUG=y. In the long run, perhaps this should be moved to another section identifier completely. Without this, memory hot-add of offline nodes (via hotadd_new_pgdat()) will oops if CPU hotplug is not also enabled. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Yasunori Goto <y-goto@jp.fujitsu.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> -- mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
2007-06-15Merge branch 'master' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/cooloney/blackfin-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (30 commits) Blackfin SMC91X ethernet supporting driver: SMC91C111 LEDs are note drived in the kernel like in uboot Blackfin SPI driver: fix bug SPI DMA incomplete transmission Blackfin SPI driver: tweak spi cleanup function to match newer kernel changes Blackfin RTC drivers: update MAINTAINERS information Blackfin serial driver: decouple PARODD and CMSPAR checking from PARENB Blackfin serial driver: actually implement the break_ctl() function Blackfin serial driver: ignore framing and parity errors Blackfin serial driver: hook up our UARTs STP bit with userspaces CMSPAR Blackfin arch: move HI/LO macros into blackfin.h and punt the rest of macros.h as it includes VDSP macros we never use Blackfin arch: redo our linker script a bit Blackfin arch: make sure we initialize our L1 Data B section properly based on the linked kernel Blackfin arch: fix bug can not wakeup from sleep via push buttons Blackfin arch: add support for Alon Bar-Lev's dynamic kernel command-line Blackfin arch: add missing gpio.h header to fix compiling in some pm configurations Blackfin arch: As Mike pointed out range goes form m..MAX_BLACKFIN_GPIO -1 Blackfin arch: fix spelling typo in output Blackfin arch: try to split up functions like this into smaller units according to LKML review Blackfin arch: add proper ENDPROC() Blackfin arch: move more of our startup code to .init so it can be freed once we are up and running Blackfin arch: unify differences between our diff head.S files -- no functional changes ...
2007-06-15Merge branch 'splice-2.6.22' of git://git.kernel.dk/data/git/linux-2.6-blockLinus Torvalds
* 'splice-2.6.22' of git://git.kernel.dk/data/git/linux-2.6-block: splice: only check do_wakeup in splice_to_pipe() for a real pipe splice: fix leak of pages on short splice to pipe splice: adjust balance_dirty_pages_ratelimited() call
2007-06-15Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: KVM: Prevent guest fpu state from leaking into the host
2007-06-15Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] Fix builds where MSC01E_xxx is undefined. [MIPS] Separate performance counter interrupts [MIPS] Malta: Fix for SOCitSC based Maltas
2007-06-15Merge branch 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32Linus Torvalds
* 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32: [AVR32] Define ARCH_KMALLOC_MINALIGN to L1_CACHE_BYTES [AVR32] STK1000: Set SPI_MODE_3 in the ltv350qv board info [AVR32] gpio_*_cansleep() fix [AVR32] ratelimit segfault reporting rate
2007-06-15block: always requeue !fs requests at the frontTejun Heo
SCSI marks internal commands with REQ_PREEMPT and push it at the front of the request queue using blk_execute_rq(). When entering suspended or frozen state, SCSI devices are quiesced using scsi_device_quiesce(). In quiesced state, only REQ_PREEMPT requests are processed. This is how SCSI blocks other requests out while suspending and resuming. As all internal commands are pushed at the front of the queue, this usually works. Unfortunately, this interacts badly with ordered requeueing. To preserve request order on requeueing (due to busy device, active EH or other failures), requests are sorted according to ordered sequence on requeue if IO barrier is in progress. The following sequence deadlocks. 1. IO barrier sequence issues. 2. Suspend requested. Queue is quiesced with part or all of IO barrier sequence at the front. 3. During suspending or resuming, SCSI issues internal command which gets deferred and requeued for some reason. As the command is issued after the IO barrier in #1, ordered requeueing code puts the request after IO barrier sequence. 4. The device is ready to process requests again but still is in quiesced state and the first request of the queue isn't REQ_PREEMPT, so command processing is deadlocked - suspending/resuming waits for the issued request to complete while the request can't be processed till device is put back into running state by resuming. This can be fixed by always putting !fs requests at the front when requeueing. The following thread reports this deadlock. http://thread.gmane.org/gmane.linux.kernel/537473 Signed-off-by: Tejun Heo <htejun@gmail.com> Acked-by: David Greaves <david@dgreaves.com> Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-15[RXRPC] net/rxrpc/ar-connection.c: fix NULL dereferenceAdrian Bunk
This patch fixes a NULL dereference spotted by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-15[TCP]: Fix logic breakage due to DSACK separationIlpo Järvinen
Commit 6f74651ae626ec672028587bc700538076dfbefb is found guilty of breaking DSACK counting, which should be done only for the SACK block reported by the DSACK instead of every SACK block that is received along with DSACK information. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-15[TCP]: Congestion control API RTT sampling fixIlpo Järvinen
Commit 164891aadf1721fca4dce473bb0e0998181537c6 broke RTT sampling of congestion control modules. Inaccurate timestamps could be fed to them without providing any way for them to identify such cases. Previously RTT sampler was called only if FLAG_RETRANS_DATA_ACKED was not set filtering inaccurate timestamps nicely. In addition, the new behavior could give an invalid timestamp (zero) to RTT sampler if only skbs with TCPCB_RETRANS were ACKed. This solves both problems. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-15Merge 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] Fix console output getting dropped on platforms without udbg_putc [POWERPC] Fix per-cpu allocation on oldworld SMP powermacs
2007-06-15splice: only check do_wakeup in splice_to_pipe() for a real pipeJens Axboe
We only ever set do_wakeup to non-zero if the pipe has an inode backing, so it's pointless to check outside the pipe->inode check. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-06-15splice: fix leak of pages on short splice to pipeJens Axboe
If the destination pipe is full and we already transferred data, we break out instead of waiting for more pipe room. The exit logic looks at spd->nr_pages to see if we moved everything inside the spd container, but we decrement that variable in the loop to decide when spd has emptied. Instead we want to compare to the original page count in the spd, so cache that in a local variable. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-06-15splice: adjust balance_dirty_pages_ratelimited() callJens Axboe
As we have potentially dirtied more than 1 page, we should indicate as such to the dirty page balancing. So call balance_dirty_pages_ratelimited_nr() and pass in the approximate number of pages we dirtied. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-06-15KVM: Prevent guest fpu state from leaking into the hostAvi Kivity
The lazy fpu changes did not take into account that some vmexit handlers can sleep. Move loading the guest state into the inner loop so that it can be reloaded if necessary, and move loading the host state into vmx_vcpu_put() so it can be performed whenever we relinquish the vcpu. Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-06-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fix: kbuild: fix sh64 section mismatch problems
2007-06-14Merge branch 'drm-patches' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm: fix radeon setparam on 32/64 bit systems. drm/i915: Add support for the G33, Q33, and Q35 chipsets. i915: add new pciids for 945GME, 965GME/GLE
2007-06-14Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6: (30 commits) [PARISC] remove global_ack_eiem [PARISC] Fix kernel panic in check_ivt [PARISC] Fix bug when syscall nr is __NR_Linux_syscalls [PARISC] be more defensive in process.c::get_wchan [PARISC] fix "reduce size of task_struct on 64-bit machines" fallout [PARISC] fix null ptr deref in unwind.c [PARISC] fix trivial spelling nit in asm/linkage.h [PARISC] remove remnants of parisc-specific softirq code [PARISC] fix section mismatch in smp.c [PARISC] fix "ENTRY" macro redefinition [PARISC] Wire up utimensat/signalfd/timerfd/eventfd syscalls [PARISC] fix section mismatch in superio serial drivers [PARISC] fix section mismatch in parisc eisa driver [PARISC] fix section mismatches in arch/parisc/kernel [PARISC] fix section mismatch in ccio-dma [PARISC] fix section mismatch in parisc STI video drivers [PARISC] fix section mismatch in parport_gsc [PARISC] fix lasi_82596 build [PARISC] Build fixes for power.c [PARISC] kobject is embedded in subsys, not kset ...
2007-06-14Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgartLinus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart: [AGPGART] intel_agp: fix device probe
2007-06-14Merge branch 'master' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Fix args to sun4v_ldc_revoke(). [SPARC64]: Really fix parport. [SPARC64]: Fix IO/MEM space sizing for PCI. [SPARC64]: Wire up cookie based sun4v interrupt registry.
2007-06-14[AGPGART] intel_agp: fix device probeWang Zhenyu
This patch trys to fix device probe in two cases. First we should correctly detect device if integrated graphics device is not enabled or exists, like an add-in card is plugged. Second on some type of intel GMCH, it might have multiple graphic chip models, like 945GME case, so we should be sure the detect works through the whole table. Signed-off-by: Wang Zhenyu <zhenyu.z.wang@intel.com> Signed-off-by: Dave Jones <davej@redhat.com>
2007-06-14Merge branch 'master' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [IPV6] addrconf: Fix IPv6 on tuntap tunnels [TCP]: Add missing break to TCP option parsing code [SCTP] Don't disable PMTU discovery when mtu is small [SCTP] Flag a pmtu change request [SCTP] Update pmtu handling to be similar to tcp [SCTP] Fix leak in sctp_getsockopt_local_addrs when copy_to_user fails [SCTP]: Allow unspecified port in sctp_bindx() [SCTP]: Correctly set daddr for IPv6 sockets during peeloff [TCP]: Set initial_ssthresh default to zero in Cubic and BIC. [TCP]: Fix left_out setting during FRTO [TCP]: Disable TSO if MD5SIG is enabled. [PPP_MPPE]: Fix "osize too small" check. [PATCH] mac80211: Don't stop tx queue on master device while scanning. [PATCH] mac80211: fix debugfs tx power reduction output [PATCH] cfg80211: fix signed macaddress in sysfs [IrDA]: f-timer reloading when sending rejected frames. [IrDA]: Fix Rx/Tx path race.