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2008-03-04kobject: properly initialize ksetsGreg Kroah-Hartman
kset_initialize was calling kobject_init_internal() which didn't initialize the kobject as well as kobject_init() was. So have kobject_init() call kobject_init_internal() and move the logic to initalize the kobject there. Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-03-04sysfs: CONFIG_SYSFS_DEPRECATED fixIngo Molnar
CONFIG_SYSFS_DEPRECATED=y changed its meaning recently and causes regressions in working setups that had SYSFS_DEPRECATED disabled. so rename it to SYSFS_DEPRECATED_V2 so that testers pick up the new default via 'make oldconfig', even if their old .config's disabled CONFIG_SYSFS_DEPRECATED ... Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-03-04driver core: fix up Kconfig text for CONFIG_SYSFS_DEPRECATEDGreg Kroah-Hartman
As things get moved into this config option, the hard date of 2006 does not work anymore, so update the text to be more descriptive. Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-03-04x86: a P4 is a P6 not an i486Hugh Dickins
P4 has been coming out as CPU_FAMILY=4 instead of 6: fix MPENTIUM4 typo. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: scsi: missing add of padded bytes to io completion byte count
2008-03-04Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2 * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: [PATCH] fs/ocfs2/aops.c: Correct use of ! and & [2.6 patch] ocfs2: make dlm_do_assert_master() static [2.6 patch] make ocfs2_downconvert_thread() static [2.6 patch] fs/ocfs2/: possible cleanups [PATCH] ocfs2: le*_add_cpu conversion ocfs2: Fix writeout in ocfs2_data_convert_worker() ocfs2: Enable localalloc for local mounts
2008-03-04Merge branch 'fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: ioat: fix 'ack' handling, driver must ensure that 'ack' is zero dmaengine: fix sparse warning fsldma: do not cleanup descriptors in hardirq context dmaengine: add driver for Freescale MPC85xx DMA controller
2008-03-04scsi: missing add of padded bytes to io completion byte countJens Axboe
Original patch from Tejun Heo <htejun@gmail.com> but should use ->extra_len and not ->data_len, as we would then overshoot the original request size. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-devel * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-devel: sched: revert load_balance_monitor() changes
2008-03-04Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: x86/xen: fix DomU boot problem x86: not set node to cpu_to_node if the node is not online x86, i387: fix ptrace leakage using init_fpu()
2008-03-04Merge 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: x86: disable KVM for Voyager and friends KVM: VMX: Avoid rearranging switched guest msrs while they are loaded KVM: MMU: Fix race when instantiating a shadow pte KVM: Route irq 0 to vcpu 0 exclusively KVM: Avoid infinite-frequency local apic timer KVM: make MMU_DEBUG compile again KVM: move alloc_apic_access_page() outside of non-preemptable region KVM: SVM: fix Windows XP 64 bit installation crash KVM: remove the usage of the mmap_sem for the protection of the memory slots. KVM: emulate access to MSR_IA32_MCG_CTL KVM: Make the supported cpuid list a host property rather than a vm property KVM: Fix kvm_arch_vcpu_ioctl_set_sregs so that set_cr0 works properly KVM: SVM: set NM intercept when enabling CR0.TS in the guest KVM: SVM: Fix lazy FPU switching
2008-03-04ioat: fix 'ack' handling, driver must ensure that 'ack' is zeroDan Williams
Initialize 'ack' to zero in case the descriptor has been recycled. Prevents "kernel BUG at crypto/async_tx/async_xor.c:185!" Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Shannon Nelson <shannon.nelson@intel.com> Cc: stable@kernel.org
2008-03-04dmaengine: fix sparse warningDan Williams
include/linux/dmaengine.h:364:2: warning: returning void-valued expression Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2008-03-04fsldma: do not cleanup descriptors in hardirq contextDan Williams
"Cleaning" descriptors involves calling pending callbacks and clients assume that their callback will only ever happen in softirq context. Delay cleanup to the tasklet. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Zhang Wei <wei.zhang@freescale.com>
2008-03-04dmaengine: add driver for Freescale MPC85xx DMA controllerZhang Wei
The driver implements DMA engine API for Freescale MPC85xx DMA controller, which could be used by devices in the silicon. The driver supports the Basic mode of Freescale MPC85xx DMA controller. The MPC85xx processors supported include MPC8540/60, MPC8555, MPC8548, MPC8641 and so on. The MPC83xx(MPC8349, MPC8360) are also supported. [kamalesh@linux.vnet.ibm.com: build fix] [dan.j.williams@intel.com: merge mm fixes, rebase on async_tx-2.6.25] Signed-off-by: Zhang Wei <wei.zhang@freescale.com> Signed-off-by: Ebony Zhu <ebony.zhu@freescale.com> Acked-by: Kumar Gala <galak@gate.crashing.org> Cc: Shannon Nelson <shannon.nelson@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2008-03-04sched: revert load_balance_monitor() changesPeter Zijlstra
The following commits cause a number of regressions: commit 58e2d4ca581167c2a079f4ee02be2f0bc52e8729 Author: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com> Date: Fri Jan 25 21:08:00 2008 +0100 sched: group scheduling, change how cpu load is calculated commit 6b2d7700266b9402e12824e11e0099ae6a4a6a79 Author: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com> Date: Fri Jan 25 21:08:00 2008 +0100 sched: group scheduler, fix fairness of cpu bandwidth allocation for task groups Namely: - very frequent wakeups on SMP, reported by PowerTop users. - cacheline trashing on (large) SMP - some latencies larger than 500ms While there is a mergeable patch to fix the latter, the former issues are not fixable in a manner suitable for .25 (we're at -rc3 now). Hence we revert them and try again in v2.6.26. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> CC: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com> Tested-by: Alexey Zaytsev <alexey.zaytsev@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-04x86/xen: fix DomU boot problemIan Campbell
Construct Xen guest e820 map with a hole between 640K-1M. It's pure luck that Xen kernels have gotten away with it in the past. The patch below seems like the right thing to do. It certainly boots in a domU without the DMI problem (without any of the other related patches such as Alexander's). Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Tested-by: Mark McLoughlin <markmc@redhat.com> Acked-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Thomas Gleixner <tglx@linutronix.de>
2008-03-04x86: not set node to cpu_to_node if the node is not onlineYinghai Lu
resolve boot problem reported by Mel Gorman: http://lkml.org/lkml/2008/2/13/404 init_cpu_to_node will use cpu->apic (from MADT or mptable) and apic->node(from SRAT or AMD config space with k8_bus_64.c) to have cpu->node mapping, and later identify_cpu will overwrite them again...(with nearby_node...) this patch checks if the node is online, otherwise it will not update cpu_node map. so keep cpu_node map to online node before identify_cpu..., to prevent possible error. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Thomas Gleixner <tglx@linutronix.de>
2008-03-04x86, i387: fix ptrace leakage using init_fpu()Suresh Siddha
This bug got introduced by the recent i387 merge: commit 4421011120b2304e5c248ae4165a2704588aedf1 Author: Roland McGrath <roland@redhat.com> Date: Wed Jan 30 13:31:50 2008 +0100 x86: x86 i387 user_regset Current usage of unlazy_fpu() in ptrace specific routines is wrong. unlazy_fpu() will not init fpu if the task never used math. So the ptrace calls can expose the parent tasks FPU data in some cases. Replace it with the init_fpu() which will init the math state, if the task never used math before. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Thomas Gleixner <tglx@linutronix.de>
2008-03-04Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: fix blkdev_issue_flush() not detecting and passing EOPNOTSUPP back block: fix shadowed variable warning in blk-map.c block: remove extern on function definition cciss: remove READ_AHEAD define and use block layer defaults make cdrom.c:check_for_audio_disc() static block/genhd.c: proper externs unexport blk_rq_map_user_iov unexport blk_{get,put}_queue block/genhd.c: cleanups proper prototype for blk_dev_init() block/blk-tag.c should #include "blk.h" Fix DMA access of block device in 64-bit kernel on some non-x86 systems with 4GB or upper 4GB memory block: separate out padding from alignment block: restore the meaning of rq->data_len to the true data length resubmit: cciss: procfs updates to display info about many splice: only return -EAGAIN if there's hope of more data block: fix kernel-docbook parameters and files
2008-03-04m68k{,nommu}: Wire up new timerfd syscallsGeert Uytterhoeven
m68k{,nommu}: Wire up the new timerfd syscalls, which were introduced in commit 4d672e7ac79b5ec5cdc90e450823441e20464691 ("timerfd: new timerfd API"). Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04m68knommu: fix fec driver interrupt racesGreg Ungerer
The FEC driver has a common interrupt handler for all interrupt event types. It is raised on a number of distinct interrupt vectors. This handler can't be re-entered while processing an interrupt, so make sure all requested vectors are flagged as IRQF_DISABLED. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04m68knommu: declare do_IRQ()Greg Ungerer
Need a declaration of do_IRQ for the 68328 interrupt handling code. It is common to all m68knommu targets, so a common declaration makes sense. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04m68knommu: remove duplicate hw_tick() codeGreg Ungerer
Remove duplicate hw_tick() function from 68328 timers code. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04m68knommu: update defconfigGreg Ungerer
Update the m68knommu defconfig. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04Build fix for drivers/s390/char/defkeymap.cTony Breeds
Commit 5ce2087ed0eb424e0889bdc9102727f65d2ecdde (Fix default compose table initialization) left a trailing quote. CC drivers/s390/char/defkeymap.o drivers/s390/char/defkeymap.c:155: error: missing terminating ' character drivers/s390/char/defkeymap.c:156: error: syntax error before ';' token make[3]: *** [drivers/s390/char/defkeymap.o] Error 1 Fix that. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] remove unused variable [CIFS] consolidate duplicate code in posix/unix inode handling [CIFS] fix build break when proc disabled [CIFS] factoring out common code in get_inode_info functions [CIFS] fix prepath conversion when server supports posix paths [CIFS] Only convert / when server does not support posix paths [CIFS] Fix mixed case name in structure dfs_info3_param [CIFS] fixup prefixpaths which contain multiple path components [CIFS] fix typo [CIFS] patch to fix incorrect encoding of number of aces on set mode [CIFS] Fix typo in quota operations [CIFS] clean up some hard to read ifdefs [CIFS] reduce checkpatch warnings [CIFS] fix warning in cifs_spnego.c
2008-03-04freezer vs stopped or tracedRoland McGrath
This changes the "freezer" code used by suspend/hibernate in its treatment of tasks in TASK_STOPPED (job control stop) and TASK_TRACED (ptrace) states. As I understand it, the intent of the "freezer" is to hold all tasks from doing anything significant. For this purpose, TASK_STOPPED and TASK_TRACED are "frozen enough". It's possible the tasks might resume from ptrace calls (if the tracer were unfrozen) or from signals (including ones that could come via timer interrupts, etc). But this doesn't matter as long as they quickly block again while "freezing" is in effect. Some minor adjustments to the signal.c code make sure that try_to_freeze() very shortly follows all wakeups from both kinds of stop. This lets the freezer code safely leave stopped tasks unmolested. Changing this fixes the longstanding bug of seeing after resuming from suspend/hibernate your shell report "[1] Stopped" and the like for all your jobs stopped by ^Z et al, as if you had freshly fg'd and ^Z'd them. It also removes from the freezer the arcane special case treatment for ptrace'd tasks, which relied on intimate knowledge of ptrace internals. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04x86: disable KVM for Voyager and friendsRandy Dunlap
Most classic Pentiums don't have hardware virtualization extension, and building kvm with Voyager, Visual Workstation, or NUMAQ generates spurious failures. Signed-off-by: Avi Kivity <avi@qumranet.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
2008-03-04KVM: VMX: Avoid rearranging switched guest msrs while they are loadedAvi Kivity
KVM tries to run as much as possible with the guest msrs loaded instead of host msrs, since switching msrs is very expensive. It also tries to minimize the number of msrs switched according to the guest mode; for example, MSR_LSTAR is needed only by long mode guests. This optimization is done by setup_msrs(). However, we must not change which msrs are switched while we are running with guest msr state: - switch to guest msr state - call setup_msrs(), removing some msrs from the list - switch to host msr state, leaving a few guest msrs loaded An easy way to trigger this is to kexec an x86_64 linux guest. Early during setup, the guest will switch EFER to not include SCE. KVM will stop saving MSR_LSTAR, and on the next msr switch it will leave the guest LSTAR loaded. The next host syscall will end up in a random location in the kernel. Fix by reloading the host msrs before changing the msr list. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04KVM: MMU: Fix race when instantiating a shadow pteAvi Kivity
For improved concurrency, the guest walk is performed concurrently with other vcpus. This means that we need to revalidate the guest ptes once we have write-protected the guest page tables, at which point they can no longer be modified. The current code attempts to avoid this check if the shadow page table is not new, on the assumption that if it has existed before, the guest could not have modified the pte without the shadow lock. However the assumption is incorrect, as the racing vcpu could have modified the pte, then instantiated the shadow page, before our vcpu regains control: vcpu0 vcpu1 fault walk pte modify pte fault in same pagetable instantiate shadow page lookup shadow page conclude it is old instantiate spte based on stale guest pte We could do something clever with generation counters, but a test run by Marcelo suggests this is unnecessary and we can just do the revalidation unconditionally. The pte will be in the processor cache and the check can be quite fast. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04KVM: Route irq 0 to vcpu 0 exclusivelyAvi Kivity
Some Linux versions allow the timer interrupt to be processed by more than one cpu, leading to hangs due to tsc instability. Work around the issue by only disaptching the interrupt to vcpu 0. Problem analyzed (and patch tested) by Sheng Yang. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04KVM: Avoid infinite-frequency local apic timerAvi Kivity
If the local apic initial count is zero, don't start a an hrtimer with infinite frequency, locking up the host. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04KVM: make MMU_DEBUG compile againMarcelo Tosatti
the cr3 variable is now inside the vcpu->arch structure. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04KVM: move alloc_apic_access_page() outside of non-preemptable regionMarcelo Tosatti
alloc_apic_access_page() can sleep, while vmx_vcpu_setup is called inside a non preemptable region. Move it after put_cpu(). Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04KVM: SVM: fix Windows XP 64 bit installation crashJoerg Roedel
While installing Windows XP 64 bit wants to access the DEBUGCTL and the last branch record (LBR) MSRs. Don't allowing this in KVM causes the installation to crash. This patch allow the access to these MSRs and fixes the issue. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Markus Rechberger <markus.rechberger@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04KVM: remove the usage of the mmap_sem for the protection of the memory slots.Izik Eidus
This patch replaces the mmap_sem lock for the memory slots with a new kvm private lock, it is needed beacuse untill now there were cases where kvm accesses user memory while holding the mmap semaphore. Signed-off-by: Izik Eidus <izike@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04block: fix blkdev_issue_flush() not detecting and passing EOPNOTSUPP backJens Axboe
This is important to eg dm, that tries to decide whether to stop using barriers or not. Tested as working by Anders Henke <anders.henke@1und1.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04block: fix shadowed variable warning in blk-map.cHarvey Harrison
Introduced between 2.6.25-rc2 and -rc3 block/blk-map.c:154:14: warning: symbol 'bio' shadows an earlier one block/blk-map.c:110:13: originally declared here Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04block: remove extern on function definitionHarvey Harrison
Intoduced between 2.6.25-rc2 and -rc3 block/blk-settings.c:319:12: warning: function 'blk_queue_dma_drain' with external linkage has definition Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04cciss: remove READ_AHEAD define and use block layer defaultsMike Miller
This patch removes the #define READ_AHEAD 1024 from the driver and uses the block layer defaults, instead. We have found that under certain workloads the setting can cause a disk connected to the e200 controller to go offline. If the disk hiccups the link may try to downshift but the controller is never notified that the link successfully completed the renegotiation. We've also found that performance using the block layer default of 32 pages was on par with the 1024 setting. We tried setting it to zero at one time based on info from our firmware guys but that killed performance. Turns out we were talking about 2 different read ahead settings. Please consider this for inclusion. Signed-off-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04make cdrom.c:check_for_audio_disc() staticAdrian Bunk
This patch makes the needlessly global check_for_audio_disc() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04block/genhd.c: proper externsAdrian Bunk
This patch adds proper externs for two structs in include/linux/genhd.h Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04unexport blk_rq_map_user_iovAdrian Bunk
This patch removes the unused export of blk_rq_map_user_iov. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04unexport blk_{get,put}_queueAdrian Bunk
This patch removes the unused exports of blk_{get,put}_queue. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04block/genhd.c: cleanupsAdrian Bunk
This patch contains the following cleanups: - make the needlessly global struct disk_type static - #if 0 the unused genhd_media_change_notify() Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04proper prototype for blk_dev_init()Adrian Bunk
This patch adds a proper prototye for blk_dev_init() in block/blk.h Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04block/blk-tag.c should #include "blk.h"Adrian Bunk
Every file should include the headers containing the externs for its global functions (in this case for __blk_queue_free_tags()). Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04Fix DMA access of block device in 64-bit kernel on some non-x86 systems with ↵Yang Shi
4GB or upper 4GB memory For some non-x86 systems with 4GB or upper 4GB memory, we need increase the range of addresses that can be used for direct DMA in 64-bit kernel. Signed-off-by: Yang Shi <yang.shi@windriver.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04block: separate out padding from alignmentTejun Heo
Block layer alignment was used for two different purposes - memory alignment and padding. This causes problems in lower layers because drivers which only require memory alignment ends up with adjusted rq->data_len. Separate out padding such that padding occurs iff driver explicitly requests it. Tomo: restorethe code to update bio in blk_rq_map_user introduced by the commit 40b01b9bbdf51ae543a04744283bf2d56c4a6afa according to padding alignment. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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