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2008-11-13sh: __copy_user function can corrupt the stack in case of exceptionStuart MENEFY1-3/+8
The __copy_user function can corrupt the stack in the case of a non-trivial length of data, and either of the first two move instructions cause an exception. This is because the fixup for these two instructions is mapped to the no_pop case, but these instructions execute after the stack is pushed. This change creates an explicit NO_POP exception mapping macro, and uses it for the two instructions executed in the trivial case where no stack pushes occur. More information at ST Linux bugzilla: https://bugzilla.stlinux.com/show_bug.cgi?id=4824 Signed-off-by: Dylan Reid <dylan_reid@bose.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-13sh: Fixed the TMU0 reload value on resumeFrancesco VIRLINZI1-1/+1
This patch fixes the TMU0 interrupt frequency on suspend/resume. During the resume the kernel reprograms the TMU0.ClockEvent mode but if the mode is periodic than the TMU0.TCOR is updated with a random wrong value without taking care latest valid saved value. There was no problem with No_HZ system where TMU0.TCOR isn't used. Signed-off-by: Francesco M. Virlinzi <francesco.virlinzi@st.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-13sh: Don't factor in PAGE_OFFSET for valid_phys_addr_range() check.Paul Mundt1-1/+1
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-13sh: early printk port type fixMagnus Damm1-0/+1
Add PORT_SCIF to unbreak the early printk code. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-13i2c: fix i2c-sh_mobile rx underrunMagnus Damm1-1/+2
Fix receive path underrun in i2c-sh_mobile driver. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-12sh: Provide a sane valid_phys_addr_range() to prevent TLB reset with PMB.Paul Mundt4-2/+37
With the PMB enabled, only P1SEG and up are covered by the PMB mappings, meaning that situations where out-of-bounds physical addresses are read from will lead to TLB reset after the PMB miss, allowing for use cases like dd if=/dev/mem to reset the TLB. Fix this up to make sure the reference is between __MEMORY_START (phys) and __pa(high_memory). This is coherent across all variants of sh/sh64 with and without MMU, though the PMB bug itself is only applicable to SH-4A parts. Reported-by: Hideo Saito <saito@densan.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-12usb: r8a66597-hcd: fix wrong data access in SuperH on-chip USBYoshihiro Shimoda1-2/+3
When I used SuperH on-chip USB, there was the problem that accessed r8a66597_root_hub which was not allocated. Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-12fix sci type for SH7723Yoshihiro Shimoda1-3/+3
This patch changes sci type of SH7723 from PORT_SCI to PORT_SCIFA. Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-12serial: sh-sci: fix cannot work SH7723 SCIFAYoshihiro Shimoda3-17/+22
SH7723 has SCIFA. This module is similer SCI register map, but it has FIFO. So this patch adds new type(PORT_SCIFA) and change some type checking. Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-10sh: Handle fixmap TLB eviction more coherently.Paul Mundt3-3/+32
There was a race in the kmap_coherent() implementation. While we guarded against preemption, there was nothing preventing eviction of the pre-faulted fixmap entry from the UTLB. Under certain workloads this would result in the fixmap entries used for cache colouring being evicted from the UTLB in the midst of a copy_page(). In addition to pre-faulting, we also make sure to preserve the PTEs in the kernel page table and introduce a cached PTE for kmap_coherent() usage. This follows a similar change on MIPS ("[MIPS] Fix aliasing bug in copy_to_user_page / copy_from_user_page"). Reported-by: Hideo Saito <saito@densan.co.jp> Reported-by: CHIKAMA Masaki <masaki.chikama@gmail.com> Tested-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-09Linux 2.6.28-rc4v2.6.28-rc4Linus Torvalds1-1/+1
2008-11-09regression: disable timer peek-ahead for 2.6.28Arjan van de Ven1-1/+3
It's showing up as regressions; disabling it very likely just papers over an underlying issue, but time is running out for 2.6.28, lets get back to this for 2.6.29 Fixes: #11826 and #11893 Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-09Merge branch 'master' of ↵Linus Torvalds1-2/+22
git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: kbuild: Fixup deb-pkg target to generate separate firmware deb
2008-11-09kbuild: Fixup deb-pkg target to generate separate firmware debJonathan McDowell1-2/+22
The below is a simplistic fix for "make deb-pkg"; it splits the firmware out to a linux-firmware-image package and adds an (unversioned) Suggests to the linux package for this firmware. Signed-Off-By: Jonathan McDowell <noodles@earth.li> Acked-by: Frans Pop <elendil@planet.nl> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-11-09Don't ask twice about not including staging driversLinus Torvalds1-1/+1
The "Exclude staging drivers" question is there so that we don't build staging drivers for allyesconfig or allnoconfig settings, but it's very irritating when you've already said "no" to staging drivers earlier. There is absolutely no point in declining twice - once you've declined the staging drivers, you're done. So make the second question depend on the first question having been answered in the affirmative. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-09Merge branch 'for-2.6.28' of git://linux-nfs.org/~bfields/linuxLinus Torvalds1-4/+1
* 'for-2.6.28' of git://linux-nfs.org/~bfields/linux: Fix nfsd truncation of readdir results
2008-11-09Merge branch 'cpus4096' of ↵Linus Torvalds6-2/+701
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'cpus4096' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: cpumask: introduce new API, without changing anything, v3 cpumask: new API, v2 cpumask: introduce new API, without changing anything
2008-11-09Fix nfsd truncation of readdir resultsDoug Nazar1-4/+1
Commit 8d7c4203 "nfsd: fix failure to set eof in readdir in some situations" introduced a bug: on a directory in an exported ext3 filesystem with dir_index unset, a READDIR will only return about 250 entries, even if the directory was larger. Bisected it back to this commit; reverting it fixes the problem. It turns out that in this case ext3 reads a block at a time, then returns from readdir, which means we can end up with buf.full==0 but with more entries in the directory still to be read. Before 8d7c4203 (but after c002a6c797 "Optimise NFS readdir hack slightly"), this would cause us to return the READDIR result immediately, but with the eof bit unset. That could cause a performance regression (because the client would need more roundtrips to the server to read the whole directory), but no loss in correctness, since the cleared eof bit caused the client to send another readdir. After 8d7c4203, the setting of the eof bit made this a correctness problem. So, move nfserr_eof into the loop and remove the buf.full check so that we loop until buf.used==0. The following seems to do the right thing and reduces the network traffic since we don't return a READDIR result until the buffer is full. Tested on an empty directory & large directory; eof is properly sent and there are no more short buffers. Signed-off-by: Doug Nazar <nazard@dragoninc.ca> Cc: David Woodhouse <David.Woodhouse@intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-11-09cpumask: introduce new API, without changing anything, v3Rusty Russell2-7/+54
Impact: cleanup Clean up based on feedback from Andrew Morton and others: - change to inline functions instead of macros - add __init to bootmem method - add a missing debug check Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-09net: unix: fix inflight counting bug in garbage collectorMiklos Szeredi3-19/+62
Previously I assumed that the receive queues of candidates don't change during the GC. This is only half true, nothing can be received from the queues (see comment in unix_gc()), but buffers could be added through the other half of the socket pair, which may still have file descriptors referring to it. This can result in inc_inflight_move_tail() erronously increasing the "inflight" counter for a unix socket for which dec_inflight() wasn't previously called. This in turn can trigger the "BUG_ON(total_refs < inflight_refs)" in a later garbage collection run. Fix this by only manipulating the "inflight" counter for sockets which are candidates themselves. Duplicating the file references in unix_attach_fds() is also needed to prevent a socket becoming a candidate for GC while the skb that contains it is not yet queued. Reported-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> CC: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-09clarify usage expectations for cnt32_to_63()Nicolas Pitre1-6/+16
Currently, all existing users of cnt32_to_63() are fine since the CPU architectures where it is used don't do read access reordering, and user mode preemption is disabled already. It is nevertheless a good idea to better elaborate usage requirements wrt preemption, and use an explicit memory barrier on SMP to avoid different CPUs accessing the counter value in the wrong order. On UP a simple compiler barrier is sufficient. Signed-off-by: Nicolas Pitre <nico@marvell.com> Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-09Merge branch 'for-linus' of ↵Linus Torvalds10-21/+22
git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: mmc: struct device - replace bus_id with dev_name(), dev_set_name() mmc: increase SD write timeout for crappy cards
2008-11-09regulator: Use menuconfig in KconfigTakashi Iwai1-11/+4
Use menuconfig instead of flat configs so that you can disable/enable regulator items with one selection. Also, use depends instead of reverse selections to make life easier, too. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2008-11-08mmc: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers9-20/+17
Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-Off-By: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-11-08mmc: increase SD write timeout for crappy cardsPierre Ossman1-1/+5
It seems that some cards are slightly out of spec and occasionally will not be able to complete a write in the alloted 250 ms [1]. Incease the timeout slightly to allow even these cards to function properly. [1] http://lkml.org/lkml/2008/9/23/390 Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-11-08Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds3-4/+8
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: optimize sched_clock() a bit sched: improve sched_clock() performance
2008-11-08Merge branch 'oprofile-fixes-for-linus' of ↵Linus Torvalds3-9/+8
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'oprofile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: oprofile: Fix p6 counter overflow check Cell OProfile: Incorrect local array size in activate spu profiling function Revert "Cell OProfile: Incorrect local array size in activate spu profiling function" oprofile: fix memory ordering Cell OProfile: Incorrect local array size in activate spu profiling function Change UTF8 chars in Kconfig help text about Oprofile AMD barcelona
2008-11-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6Linus Torvalds2-3/+19
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: Staging: make usbip depend on CONFIG_NET Staging: only build the tree if we really want to
2008-11-08Fix __pfn_to_page(pfn) for CONFIG_DISCONTIGMEM=yRafael J. Wysocki1-1/+1
Fix the __pfn_to_page(pfn) macro so that it doesn't evaluate its argument twice in the CONFIG_DISCONTIGMEM=y case, because 'pfn' may be a result of a funtion call having side effects. For example, the hibernation code applies pfn_to_page(pfn) to the result of a function returning the pfn corresponding to the next set bit in a bitmap and the current bit position is modified on each call. This leads to "interesting" failures for CONFIG_DISCONTIGMEM=y due to the current behavior of __pfn_to_page(pfn). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-08sched: optimize sched_clock() a bitIngo Molnar1-1/+1
sched_clock() uses cycles_2_ns() needlessly - which is an irq-disabling variant of __cycles_2_ns(). Most of the time sched_clock() is called with irqs disabled already. The few places that call it with irqs enabled need to be updated. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-08sched: improve sched_clock() performanceIngo Molnar2-3/+7
in scheduler-intense workloads native_read_tsc() overhead accounts for 20% of the system overhead: 659567 system_call 41222.9375 686796 schedule 435.7843 718382 __switch_to 665.1685 823875 switch_mm 4526.7857 1883122 native_read_tsc 55385.9412 9761990 total 2.8468 this is large part due to the rdtsc_barrier() that is done before and after reading the TSC. But sched_clock() is not a precise clock in the GTOD sense, using such barriers is completely pointless. So remove the barriers and only use them in vget_cycles(). This improves lat_ctx performance by about 5%. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-07Staging: make usbip depend on CONFIG_NETGreg Kroah-Hartman1-1/+1
Thanks to Randy Dunlap for finding this problem. Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-11-07Staging: only build the tree if we really want toGreg Kroah-Hartman1-2/+18
This Kconfig change allows the common 'make allmodconfig' and 'make allyesconfig' build options to skip the staging tree, which is probably what you want to have happen anyway. This makes the linux-next developer's life a lot easier so he doesn't have to worry about changes that break the staging tree, that's for me to worry about... Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-11-07Merge branch 'oprofile-for-tip' of ↵Ingo Molnar3-9/+8
git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile into x86/urgent
2008-11-07Merge branch 'release' of ↵Linus Torvalds12-76/+106
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Reserve elfcorehdr memory in CONFIG_CRASH_DUMP [IA64] fix boot panic caused by offline CPUs [IA64] reorder Kconfig options to match x86 [IA64] Build VT-D iommu support into generic kernel [IA64] remove dead BIO_VMERGE_BOUNDARY definition [IA64] remove duplicated #include from pci-dma.c [IA64] use common header for software IO/TLB [IA64] fix the difference between node_mem_map and node_start_pfn [IA64] Add error_recovery_info field to SAL section header [IA64] Add UV watchlist support. [IA64] Simplify SGI uv vs. sn2 driver issues
2008-11-07[IA64] Reserve elfcorehdr memory in CONFIG_CRASH_DUMPJay Lan1-1/+1
IA64 kdump kernel failed to initialize /proc/vmcore in 2.6.28-rc2. A bug was introduced in this patch commit: d9a9855d0b06ca6d6cc92596fedcc03f8512e062 always reserve elfcore header memory in crash kernel The problem was that the call to reserve_elfcorehdr() should be placed in CONFIG_CRASH_DUMP rather than in CONFIG_CRASH_KERNEL, which does not exist. Signed-off-by: Jay Lan <jlan@sgi.com> Acked-by: Simon Hormon <horms@verge.net.au> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-11-07Merge branch 'for-linus' of ↵Linus Torvalds4-22/+24
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: fix range check on mmapped sysfs resource files PCI: remove excess kernel-doc notation PCI: annotate return value of pci_ioremap_bar with __iomem PCI: fix VPD limit quirk for Broadcom 5708S
2008-11-07Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds1-2/+2
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, xen: fix use of pgd_page now that it really does return a page
2008-11-07Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds2-4/+7
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: fine-tune SD_SIBLING_INIT sched: fine-tune SD_MC_INIT sched: fix memory leak in a failure path sched: fix a bug in sched domain degenerate
2008-11-07Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds3-5/+16
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: xen: make sure stray alias mappings are gone before pinning vmap: cope with vm_unmap_aliases before vmalloc_init()
2008-11-07oprofile: Fix p6 counter overflow checkAndi Kleen1-5/+4
Fix the counter overflow check for CPUs with counter width > 32 I had a similar change in a different patch that I didn't submit and I didn't notice the problem earlier because it was always tested together. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
2008-11-07trivial: MPT fusion - remove long dead codeAlan Cox1-108/+0
This triggers false bug reports as it does a bogus kmalloc with locks held but is never really compiled into the kernel. Closes #8329 Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-07trivial: dmi_scan typoAlan Cox1-3/+3
As we've lost our trivial maintainer for the moment I'll send this directly. Only touches a comment Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-07Merge branch 'for_linus' of ↵Linus Torvalds7-30/+69
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: add checksum calculation when clearing UNINIT flag in ext4_new_inode ext4: Mark the buffer_heads as dirty and uptodate after prepare_write ext4: calculate journal credits correctly ext4: wait on all pending commits in ext4_sync_fs() ext4: Convert to host order before using the values. ext4: fix missing ext4_unlock_group in error path jbd2: deregister proc on failure in jbd2_journal_init_inode jbd2: don't give up looking for space so easily in __jbd2_log_wait_for_space jbd: don't give up looking for space so easily in __log_wait_for_space
2008-11-07sched: fine-tune SD_SIBLING_INITIngo Molnar1-1/+1
fine-tune the HT sched-domains parameters as well. On a HT capable box, this increases lat_ctx performance from 23.87 usecs to 1.49 usecs: # before $ ./lat_ctx -s 0 2 "size=0k ovr=1.89 2 23.87 # after $ ./lat_ctx -s 0 2 "size=0k ovr=1.84 2 1.49 Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-07sched: fine-tune SD_MC_INITMike Galbraith1-1/+1
Tune SD_MC_INIT the same way as SD_CPU_INIT: unset SD_BALANCE_NEWIDLE, and set SD_WAKE_BALANCE. This improves vmark by 5%: vmark 132102 125968 125497 messages/sec avg 127855.66 .984 vmark 139404 131719 131272 messages/sec avg 134131.66 1.033 Signed-off-by: Mike Galbraith <efault@gmx.de> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu> # *DOCUMENTATION*
2008-11-07ext4: add checksum calculation when clearing UNINIT flag in ext4_new_inodeFrederic Bohe1-0/+2
When initializing an uninitialized block group in ext4_new_inode(), its block group checksum must be re-calculated. This fixes a race when several threads try to allocate a new inode in an UNINIT'd group. There is some question whether we need to be initializing the block bitmap in ext4_new_inode() at all, but for now, if we are going to init the block group, let's eliminate the race. Signed-off-by: Frederic Bohe <frederic.bohe@bull.net> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2008-11-07ext4: Mark the buffer_heads as dirty and uptodate after prepare_writeAneesh Kumar K.V1-0/+2
We need to make sure we mark the buffer_heads as dirty and uptodate so that block_write_full_page write them correctly. This fixes mmap corruptions that can occur in low memory situations. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2008-11-07cpumask: new API, v2Rusty Russell2-0/+16
- add cpumask_of() - add free_bootmem_cpumask_var() Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-07xen: make sure stray alias mappings are gone before pinningJeremy Fitzhardinge2-5/+9
Xen requires that all mappings of pagetable pages are read-only, so that they can't be updated illegally. As a result, if a page is being turned into a pagetable page, we need to make sure all its mappings are RO. If the page had been used for ioremap or vmalloc, it may still have left over mappings as a result of not having been lazily unmapped. This change makes sure we explicitly mop them all up before pinning the page. Unlike aliases created by kmap, the there can be vmalloc aliases even for non-high pages, so we must do the flush unconditionally. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Linux Memory Management List <linux-mm@kvack.org> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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