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2008-10-30[XFS] Fix use-after-free with log and quotasLachlan McIlroy
Destroying the quota stuff on unmount can access the log - ie XFS_QM_DONE() ends up in xfs_dqunlock() which calls xfs_trans_unlocked_item() and then xfs_log_move_tail(). By this time the log has already been destroyed. Just move the cleanup of the quota code earlier in xfs_unmountfs() before the call to xfs_log_unmount(). Moving XFS_QM_DONE() up near XFS_QM_DQPURGEALL() seems like a good spot. SGI-PV: 987086 SGI-Modid: xfs-linux-melb:xfs-kern:32148a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Peter Leckie <pleckie@sgi.com>
2008-10-30[XFS] Remove final remnants of dirv1 macros and other stuffBarry Naujok
SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:32002a Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-10-30[XFS] Use xfs_idestroy() to cleanup an inode.Lachlan McIlroy
SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31927a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: David Chinner <david@fromorbit.com>
2008-10-30[XFS] Remove kmem_zone_t argument from xfs_inode_init_once()Lachlan McIlroy
kmem cache constructor no longer takes a kmem_zone_t argument. SGI-PV: 957103 SGI-Modid: xfs-linux-melb:xfs-kern:32254a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-10-30[XFS] Make use of the init-once slab optimisation.David Chinner
To avoid having to initialise some fields of the XFS inode on every allocation, we can use the slab init-once feature to initialise them. All we have to guarantee is that when we free the inode, all it's entries are in the initial state. Add asserts where possible to ensure debug kernels check this initial state before freeing and after allocation. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31925a Signed-off-by: David Chinner <david@fromorbit.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
2008-10-28Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits) ftrace: fix current_tracer error return tracing: fix a build error on alpha ftrace: use a real variable for ftrace_nop in x86 tracing/ftrace: make boot tracer select the sched_switch tracer tracepoint: check if the probe has been registered asm-generic: define DIE_OOPS in asm-generic trace: fix printk warning for u64 ftrace: warning in kernel/trace/ftrace.c ftrace: fix build failure ftrace, powerpc, sparc64, x86: remove notrace from arch ftrace file ftrace: remove ftrace hash ftrace: remove mcount set ftrace: remove daemon ftrace: disable dynamic ftrace for all archs that use daemon ftrace: add ftrace warn on to disable ftrace ftrace: only have ftrace_kill atomic ftrace: use probe_kernel ftrace: comment arch ftrace code ftrace: return error on failed modified text. ftrace: dynamic ftrace process only text section ...
2008-10-28Merge branch 'kvm-updates/2.6.28' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm * 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: KVM: ia64: Makefile fix for forcing to re-generate asm-offsets.h KVM: Future-proof device assignment ABI KVM: ia64: Fix halt emulation logic KVM: Fix guest shared interrupt with in-kernel irqchip KVM: MMU: sync root on paravirt TLB flush
2008-10-28Merge 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: fix irqs on/off ip tracing lockdep: minor fix for debug_show_all_locks() x86: restore the old swiotlb alloc_coherent behavior x86: use GFP_DMA for 24bit coherent_dma_mask swiotlb: remove panic for alloc_coherent failure xen: compilation fix of drivers/xen/events.c on IA64 xen: portability clean up and some minor clean up for xencomm.c xen: don't reload cr3 on suspend kernel/resource: fix reserve_region_with_split() section mismatch printk: remove unused code from kernel/printk.c
2008-10-28Merge branch 'irq-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: irq: make variable static
2008-10-28Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: fix documentation reference for sched_min_granularity_ns sched: virtual time buddy preemption sched: re-instate vruntime based wakeup preemption sched: weaken sync hint sched: more accurate min_vruntime accounting sched: fix a find_busiest_group buglet sched: add CONFIG_SMP consistency
2008-10-28Merge 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, memory hotplug: remove wrong -1 in calling init_memory_mapping() x86: keep the /proc/meminfo page count correct x86/uv: memory allocation at initialization xen: fix Xen domU boot with batched mprotect
2008-10-28Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] s390: Fix build for !CONFIG_S390_GUEST + CONFIG_VIRTIO_CONSOLE [S390] No more 4kb stacks. [S390] Change default IPL method to IPL_VM. [S390] tape: disable interrupts in tape_open and tape_release [S390] appldata: unsigned ops->size cannot be negative [S390] tape block: complete request with correct locking [S390] Fix sysdev class file creation. [S390] pgtables: Fix race in enable_sie vs. page table ops [S390] qdio: remove incorrect memset [S390] qdio: prevent double qdio shutdown in case of I/O errors
2008-10-28Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: libata: ahci enclosure management bit mask libata: ahci enclosure management led sync pata_ninja32: suspend/resume support libata: Fix LBA48 on pata_it821x RAID volumes. libata: clear saved xfer_mode and ncq_enabled on device detach sata_sil24: configure max read request size to 4k libata: add missing kernel-doc libata: fix device iteration bugs ahci: Add support for Promise PDC42819 ata: Switch all my stuff to a common address
2008-10-28ftrace: fix current_tracer error returnSteven Rostedt
The commit (in linux-tip) c2931e05ec5965597cbfb79ad332d4a29aeceb23 ( ftrace: return an error when setting a nonexistent tracer ) added useful code that would error when a bad tracer was written into the current_tracer file. But this had a bug if the amount written was more than the amount read by that code. The first iteration would set the tracer correctly, but since it did not consume the rest of what was written (usually whitespace), the userspace utility would continue to write what was not consumed. This second iteration would fail to find a tracer and return -EINVAL. Funny thing is that the tracer would have already been set. This patch just consumes all the data that is written to the file. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-28KVM: ia64: Makefile fix for forcing to re-generate asm-offsets.hXiantao Zhang
To avoid using stale asm-offsets.h. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-28KVM: Future-proof device assignment ABIAvi Kivity
Reserve some space so we can add more data. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-28KVM: ia64: Fix halt emulation logicXiantao Zhang
Common halt logic was changed by x86 and did not update ia64. This patch updates halt for ia64. Fixes a regression causing guests to hang with more than 2 vcpus. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-28KVM: Fix guest shared interrupt with in-kernel irqchipSheng Yang
Every call of kvm_set_irq() should offer an irq_source_id, which is allocated by kvm_request_irq_source_id(). Based on irq_source_id, we identify the irq source and implement logical OR for shared level interrupts. The allocated irq_source_id can be freed by kvm_free_irq_source_id(). Currently, we support at most sizeof(unsigned long) different irq sources. [Amit: - rebase to kvm.git HEAD - move definition of KVM_USERSPACE_IRQ_SOURCE_ID to common file - move kvm_request_irq_source_id to the update_irq ioctl] [Xiantao: - Add kvm/ia64 stuff and make it work for kvm/ia64 guests] Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-28KVM: MMU: sync root on paravirt TLB flushMarcelo Tosatti
The pvmmu TLB flush handler should request a root sync, similarly to a native read-write CR3. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-28lockdep: fix irqs on/off ip tracingHeiko Carstens
Impact: fix lockdep lock-api-caller output when irqsoff tracing is enabled 81d68a96 "ftrace: trace irq disabled critical timings" added wrappers around trace_hardirqs_on/off_caller. However these functions use __builtin_return_address(0) to figure out which function actually disabled or enabled irqs. The result is that we save the ips of trace_hardirqs_on/off instead of the real caller. Not very helpful. However since the patch from Steven the ip already gets passed. So use that and get rid of __builtin_return_address(0) in these two functions. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-28[S390] s390: Fix build for !CONFIG_S390_GUEST + CONFIG_VIRTIO_CONSOLEChristian Borntraeger
The s390 kernel does not compile if virtio console is enabled, but guest support is disabled: LD .tmp_vmlinux1 arch/s390/kernel/built-in.o: In function `setup_arch': /space/linux-2.5/arch/s390/kernel/setup.c:773: undefined reference to `s390_virtio_console_init' The fix is related to commit 99e65c92f2bbf84f43766a8bf701e36817d62822 Author: Christian Borntraeger <borntraeger@de.ibm.com> Date: Fri Jul 25 15:50:04 2008 +0200 KVM: s390: Fix guest kconfig Which changed the build process to build kvm_virtio.c only if CONFIG_S390_GUEST is set. We must ifdef the prototype in the header file accordingly. Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] No more 4kb stacks.Heiko Carstens
We got a stack overflow with a small stack configuration on a 32 bit system. It just looks like as 4kb isn't enough and too dangerous. So lets get rid of 4kb stacks on 32 bit. But one thing I completely dislike about the call trace below is that just for debugging or tracing purposes sprintf gets called (cio_start_key): /* process condition code */ sprintf(dbf_txt, "ccode:%d", ccode); CIO_TRACE_EVENT(4, dbf_txt); But maybe its just me who thinks that this could be done better. <4>Kernel stack overflow. <4>Modules linked in: dm_multipath sunrpc bonding qeth_l2 dm_mod qeth ccwgroup vmur <4>CPU: 1 Not tainted 2.6.27-30.x.20081015-s390default #1 <4>Process httpd (pid: 3807, task: 20ae2df8, ksp: 1666fb78) <4>Krnl PSW : 040c0000 8027098a (number+0xe/0x348) <4> R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:0 CC:0 PM:0 <4>Krnl GPRS: 00d43318 0027097c 1666f277 9666f270 <4> 00000000 00000000 0000000a ffffffff <4> 9666f270 1666f228 1666f277 1666f098 <4> 00000002 80270982 80271016 1666f098 <4>Krnl Code: 8027097e: f0340dd0a7f1 srp 3536(4,%r0),2033(%r10),4 <4> 80270984: 0f00 clcl %r0,%r0 <4> 80270986: a7840001 brc 8,80270988 <4> >8027098a: 18ef lr %r14,%r15 <4> 8027098c: a7faff68 ahi %r15,-152 <4> 80270990: 18bf lr %r11,%r15 <4> 80270992: 18a2 lr %r10,%r2 <4> 80270994: 1893 lr %r9,%r3 Modified calltrace with annotated stackframe size of each function: stackframe size | 0 304 vsnprintf+850 [0x271016] 1 72 sprintf+74 [0x271522] 2 56 cio_start_key+262 [0x2d4c16] 3 56 ccw_device_start_key+222 [0x2dfe92] 4 56 ccw_device_start+40 [0x2dff28] 5 48 raw3215_start_io+104 [0x30b0f8] 6 56 raw3215_write+494 [0x30ba0a] 7 40 con3215_write+68 [0x30bafc] 8 40 __call_console_drivers+146 [0x12b0fa] 9 32 _call_console_drivers+102 [0x12b192] 10 64 release_console_sem+268 [0x12b614] 11 168 vprintk+462 [0x12bca6] 12 72 printk+68 [0x12bfd0] 13 256 __print_symbol+50 [0x15a882] 14 56 __show_trace+162 [0x103d06] 15 32 show_trace+224 [0x103e70] 16 48 show_stack+152 [0x103f20] 17 56 dump_stack+126 [0x104612] 18 96 __alloc_pages_internal+592 [0x175004] 19 80 cache_alloc_refill+776 [0x196f3c] 20 40 __kmalloc+258 [0x1972ae] 21 40 __alloc_skb+94 [0x328086] 22 32 pskb_copy+50 [0x328252] 23 32 skb_realloc_headroom+110 [0x328a72] 24 104 qeth_l2_hard_start_xmit+378 [0x7803bfde] 25 56 dev_hard_start_xmit+450 [0x32ef6e] 26 56 __qdisc_run+390 [0x3425d6] 27 48 dev_queue_xmit+410 [0x331e06] 28 40 ip_finish_output+308 [0x354ac8] 29 56 ip_output+218 [0x355b6e] 30 24 ip_local_out+56 [0x354584] 31 120 ip_queue_xmit+300 [0x355cec] 32 96 tcp_transmit_skb+812 [0x367da8] 33 40 tcp_push_one+158 [0x369fda] 34 112 tcp_sendmsg+852 [0x35d5a0] 35 240 sock_sendmsg+164 [0x32035c] 36 56 kernel_sendmsg+86 [0x32064a] 37 88 sock_no_sendpage+98 [0x322b22] 38 104 tcp_sendpage+70 [0x35cc1e] 39 48 sock_sendpage+74 [0x31eb66] 40 64 pipe_to_sendpage+102 [0x1c4b2e] 41 64 __splice_from_pipe+120 [0x1c5340] 42 72 splice_from_pipe+90 [0x1c57e6] 43 56 generic_splice_sendpage+38 [0x1c5832] 44 48 do_splice_from+104 [0x1c4c38] 45 48 direct_splice_actor+52 [0x1c4c88] 46 80 splice_direct_to_actor+180 [0x1c4f80] 47 72 do_splice_direct+70 [0x1c5112] 48 64 do_sendfile+360 [0x19de18] 49 72 sys_sendfile64+126 [0x19df32] 50 336 sysc_do_restart+18 [0x111a1a] Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] Change default IPL method to IPL_VM.Heiko Carstens
allyesconfig and allmodconfig built kernels have a tape IPL record. A the vmreader record makes much more sense, since hardly anybody will ever IPL a kernel from tape. So change the default. As I side effect I can test these kernels without fiddling around with the kernel config ;) Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] tape: disable interrupts in tape_open and tape_releaseFrank Munzert
Get tape device lock with interrupts disabled. Otherwise lockdep will issue a warning similar to: ================================= [ INFO: inconsistent lock state ] 2.6.27 #1 --------------------------------- inconsistent {in-hardirq-W} -> {hardirq-on-W} usage. vol_id/2903 [HC0[0]:SC0[0]:HE1:SE1] takes: (sch->lock){++..}, at: [<000003e00004c7a2>] tape_open+0x42/0x1a4 [tape] {in-hardirq-W} state was registered at: [<000000000007ce5c>] __lock_acquire+0x894/0xa74 [<000000000007d0ce>] lock_acquire+0x92/0xb8 [<0000000000345154>] _spin_lock+0x5c/0x9c [<0000000000202264>] do_IRQ+0x124/0x1f0 [<0000000000026610>] io_return+0x0/0x8 irq event stamp: 847 hardirqs last enabled at (847): [<000000000007aca6>] trace_hardirqs_on+0x2a/0x38 hardirqs last disabled at (846): [<0000000000076ca2>] trace_hardirqs_off+0x2a/0x38 softirqs last enabled at (0): [<000000000004909e>] copy_process+0x43e/0x11f4 softirqs last disabled at (0): [<0000000000000000>] 0x0 other info that might help us debug this: 1 lock held by vol_id/2903: #0: (&bdev->bd_mutex){--..}, at: [<000000000010e0f4>] do_open+0x78/0x358 stack backtrace: CPU: 1 Not tainted 2.6.27 #1}, Process vol_id (pid: 2903, task: 000000003d4c0000, ksp: 000000003d4e3b10) 0400000000000000 000000003d4e3830 0000000000000002 0000000000000000 000000003d4e38d0 000000003d4e3848 000000003d4e3848 00000000000168a8 0000000000000000 000000003d4e3b10 0000000000000000 0000000000000000 000000003d4e3830 000000000000000c 000000003d4e3830 000000003d4e38a0 000000000034aa98 00000000000168a8 000000003d4e3830 000000003d4e3880 Call Trace: ([<000000000001681c>] show_trace+0x138/0x158) [<0000000000016902>] show_stack+0xc6/0xf8 [<00000000000170d4>] dump_stack+0xb0/0xc0 [<0000000000078810>] print_usage_bug+0x1e8/0x228 [<000000000007a71c>] mark_lock+0xb14/0xd24 [<000000000007cd5a>] __lock_acquire+0x792/0xa74 [<000000000007d0ce>] lock_acquire+0x92/0xb8 [<0000000000345154>] _spin_lock+0x5c/0x9c [<000003e00004c7a2>] tape_open+0x42/0x1a4 [tape] [<000003e00005185c>] tapeblock_open+0x98/0xd0 [tape] Signed-off-by: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] appldata: unsigned ops->size cannot be negativeRoel Kluin
unsigned ops->size cannot be negative Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] tape block: complete request with correct lockingFrank Munzert
__blk_end_request must be called with request queue lock held. We need to use blk_end_request rather than __blk_end_request. Signed-off-by: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] Fix sysdev class file creation.Heiko Carstens
Use sysdev_class_create_file() to create create sysdev class attributes instead of sysfs_create_file(). Using sysfs_create_file() wasn't a very good idea since the show and store functions have a different amount of parameters for sysfs files and sysdev class files. In particular the pointer to the buffer is the last argument and therefore accesses to random memory regions happened. Still worked surprisingly well until we got a kernel panic. Cc: stable@kernel.org Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] pgtables: Fix race in enable_sie vs. page table opsChristian Borntraeger
The current enable_sie code sets the mm->context.pgstes bit to tell dup_mm that the new mm should have extended page tables. This bit is also used by the s390 specific page table primitives to decide about the page table layout - which means context.pgstes has two meanings. This can cause any kind of bugs. For example - e.g. shrink_zone can call ptep_clear_flush_young while enable_sie is running. ptep_clear_flush_young will test for context.pgstes. Since enable_sie changed that value of the old struct mm without changing the page table layout ptep_clear_flush_young will do the wrong thing. The solution is to split pgstes into two bits - one for the allocation - one for the current state Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] qdio: remove incorrect memsetJan Glauber
Remove the memset since zeroing the string is not needed and use snprintf instead of sprintf. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28[S390] qdio: prevent double qdio shutdown in case of I/O errorsJan Glauber
In case of I/O errors on a qdio subchannel qdio_shutdown may be called twice by the qdio driver and by zfcp. Remove the superfluous shutdown from qdio and let the upper layer driver handle the error condition. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-28lockdep: minor fix for debug_show_all_locks()qinghuang feng
When we failed to get tasklist_lock eventually (count equals 0), we should only print " ignoring it.\n", and not print " locked it.\n" needlessly. Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-28tracing: fix a build error on alphaFrederic Weisbecker
Impact: build fix on Alpha When tracing is enabled, some arch have included <linux/irqflags.h> on their <asm/system.h> but others like alpha or m68k don't. Build error on alpha: kernel/trace/trace.c: In function 'tracing_cpumask_write': kernel/trace/trace.c:2145: error: implicit declaration of function 'raw_local_irq_disable' kernel/trace/trace.c:2162: error: implicit declaration of function 'raw_local_irq_enable' Tested on Alpha through a cross-compiler (should correct a similar issue on m68k). Reported-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-28x86, memory hotplug: remove wrong -1 in calling init_memory_mapping()Shaohua Li
Impact: fix crash with memory hotplug Shuahua Li found: | I just did some experiments on a desktop for memory hotplug and this bug | triggered a crash in my test. | | Yinghai's suggestion also fixed the bug. We don't need to round it, just remove that extra -1 Signed-off-by: Yinghai <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-28libata: ahci enclosure management bit maskDavid Milburn
Enclosure management bit mask definitions. Signed-off-by: David Milburn <dmilburn@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-28libata: ahci enclosure management led syncDavid Milburn
Synchronize ahci_sw_activity and ahci_sw_activity_blink with ata_port lock. Signed-off-by: David Milburn <dmilburn@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-28pata_ninja32: suspend/resume supportAlan Cox
I had assumed that the standard recovery would be sufficient for this hardware but it isn't. Fix up the other registers on resume as needed. See bug #11735 Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-27libata: Fix LBA48 on pata_it821x RAID volumes.Ondrej Zary
[http://lkml.org/lkml/2008/10/18/82] Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-27libata: clear saved xfer_mode and ncq_enabled on device detachTejun Heo
libata EH saves xfer_mode and ncq_enabled at start to later set DUBIOUS_XFER flag if it has changed. These values need to be cleared on device detach such that hot device swap doesn't accidentally miss DUBIOUS_XFER. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-27sata_sil24: configure max read request size to 4kTejun Heo
Due to request posting limitations, bandwidth of sil3132 is limited to around 120MB/s with the minimum pci-e payload size (128bytes) which is used by most consumer systems. However, write throughput can be slightly (~3%) increased by increasing the max read requeset size. Configure it to 4k which is the maximum supported. This optimization is also done by SIMG's windows driver. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-27libata: add missing kernel-docRandy Dunlap
Fix libata missing kernel-doc: Warning(lin2628-rc2//drivers/ata/libata-core.c:4562): No description found for parameter 'tag' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-27libata: fix device iteration bugsTejun Heo
There were several places where only enabled devices should be iterated over but device enabledness wasn't checked. * IDENTIFY data 40 wire check in cable_is_40wire() * xfer_mode/ncq_enabled saving in ata_scsi_error() * DUBIOUS_XFER handling in ata_set_mode() While at it, reformat comments in cable_is_40wire(). Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-27ahci: Add support for Promise PDC42819Mark Nelson
Add an appropriate entry for the Promise PDC42819 controller. It has an AHCI mode and so far works correctly with board_ahci. This chip is found on Promise's FastTrak TX2650 (2 port) and TX4650 (4 port) software-based RAID cards (for which there is a binary driver, t3sas) and can be found on some motherboards, for example the MSI K9A2 Platinum, which calls the chip a Promise T3 controller. Although this controller also supports SAS devices, its default bootup mode is AHCI and the binary driver has to do some magic to get the chip into the appropriate mode to drive SAS disks. Seeing as no documentation is provided by Promise, adding this entry to the ahci driver allows the controller to be useful to people as a SATA controller (with no ill effects on the system if a SAS disk is connected - probing of the port just times out with "link online but device misclassified"), without having to resort to using the binary driver. Users who require SAS or the proprietary software raid can get this functionality using the binary driver. Signed-off-by: Mark Nelson <mdnelson8@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-27ata: Switch all my stuff to a common addressAlan Cox
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-27Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: libata: fix NCQ devices behind port multipliers scsi: make sure that scsi_init_shared_tag_map() doesn't overwrite existing map
2008-10-27libata: fix NCQ devices behind port multipliersJens Axboe
For devices behind sata port multipliers, we have to make sure that they share a tag map since all tags for that PMP must be unique. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-10-27scsi: make sure that scsi_init_shared_tag_map() doesn't overwrite existing mapJens Axboe
Right now callers have to check whether scsi_host->bqt is already set up, it's much cleaner to just have scsi_init_shared_tag_map() does this check on its own. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-10-27x86: keep the /proc/meminfo page count correctYinghai Lu
Impact: get correct page count in /proc/meminfo found page count in /proc/meminfo is nor correct on 1G system in VirtualBox 2.0.4 # cat /proc/meminfo MemTotal: 1017508 kB MemFree: 822700 kB Buffers: 1456 kB Cached: 26632 kB SwapCached: 0 kB ... Hugepagesize: 2048 kB DirectMap4k: 4032 kB DirectMap2M: 18446744073709549568 kB with this patch get: ... DirectMap4k: 4032 kB DirectMap2M: 1044480 kB which is consistent to kernel_page_tables ---[ Low Kernel Mapping ]--- 0xffff880000000000-0xffff880000001000 4K RW PCD GLB x pte 0xffff880000001000-0xffff88000009f000 632K RW GLB x pte 0xffff88000009f000-0xffff8800000a0000 4K RW PCD GLB x pte 0xffff8800000a0000-0xffff880000200000 1408K RW GLB x pte 0xffff880000200000-0xffff88003fe00000 1020M RW PSE GLB x pmd 0xffff88003fe00000-0xffff88003fff0000 1984K RW GLB NX pte 0xffff88003fff0000-0xffff880040000000 64K pte 0xffff880040000000-0xffff888000000000 511G pud 0xffff888000000000-0xffffc20000000000 58880G pgd Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-27sched: fix documentation reference for sched_min_granularity_nsJiri Kosina
Impact: documentation fix sched-design-CFS.txt wrongly references sched_granularity_ns sysctl, as its name in fact is sched_min_granularity_ns. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-27Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (33 commits) MIPS: lemote/lm2e: Added io_map_base to pci controller MIPS: TXx9: Make firmware parameter passing more robust MIPS: Markeins: Remove unnecessary define and cleanup comments, etc. MIPS: Markeins: Extract ll_emma2rh_* functions MIPS: Markeins: Remove runtime debug prints MIPS: EMMA: Fold arch/mips/emma/{common,markeins}/irq*.c into markeins/irq.c MIPS: EMMA2RH: Remove emma2rh_gpio_irq_base MIPS: EMMA2RH: Remove emma2rh_sw_irq_base MIPS: EMMA2RH: Remove emma2rh_irq_base global variable MIPS: EMMA2RH: Remove emma2rh_sync on read operation MIPS: EMMA: Move <asm/emma2rh> to <asm/emma> dir MIPS: EMMA: Move arch/mips/emma2rh/ into arch/mips/emma/ MIPS: EMMA: Kconfig reorganization MIPS: Add CONFIG_CPU_R5500 for NEC VR5500 series processors MIPS: RB532: Disable the right device MIPS: Add support for NXP PNX833x (STB222/5) into linux kernel MIPS: TXx9: CONFIG_TOSHIBA_RBTX4939 spelling MIPS: Fix KGDB build error INPUT: sgi_btns: Add license specification MIPS: IP22: ip22-int.c header file weeding. ...
2008-10-27Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: firewire: fw-sbp2: fix races firewire: fw-sbp2: delay first login to avoid retries firewire: fw-ohci: initialization failure path fixes firewire: fw-ohci: don't leak dma memory on module removal firewire: fix struct fw_node memory leak firewire: Survive more than 256 bus resets
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