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5d3a551c28
linux/arch/ia64/include/asm
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Will Deacon 5d3a551c28 mm: hugetlb: add arch hook for clearing page flags before entering pool 
The core page allocator ensures that page flags are zeroed when freeing
pages via free_pages_check.  A number of architectures (ARM, PPC, MIPS)
rely on this property to treat new pages as dirty with respect to the data
cache and perform the appropriate flushing before mapping the pages into
userspace.

This can lead to cache synchronisation problems when using hugepages,
since the allocator keeps its own pool of pages above the usual page
allocator and does not reset the page flags when freeing a page into the
pool.

This patch adds a new architecture hook, arch_clear_hugepage_flags, so
that architectures which rely on the page flags being in a particular
state for fresh allocations can adjust the flags accordingly when a page
is freed into the pool.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Michal Hocko <mhocko@suse.cz>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-09 16:22:24 +09:00
..
native ia64/pv_ops: paravirtualize gate.S. 2009-03-26 11:01:46 -07:00
sn Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
uv Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
xen xen/arm: Introduce xen_ulong_t for unsigned long 2012-09-14 13:34:43 +00:00
acpi-ext.h
acpi.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
agp.h agp: kill phys_to_gart() and gart_to_phys() 2009-08-03 09:05:00 +01:00
asm-offsets.h kbuild: move asm-offsets.h to include/generated 2009-12-12 13:08:14 +01:00
asmmacro.h Rename .data..patch.XXX to .data..patch.XXX. 2010-03-03 11:25:59 +01:00
atomic.h [IA64] Redefine ATOMIC_INIT and ATOMIC64_INIT to drop the casts 2012-07-26 10:55:26 -07:00
auxvec.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
barrier.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
bitops.h asm-generic: add another generic ext2 atomic bitops 2011-07-26 16:49:46 -07:00
bitsperlong.h asm-generic: introduce asm/bitsperlong.h 2009-06-11 21:02:14 +02:00
break.h
bug.h
bugs.h
byteorder.h byteorder: make swab.h include asm/swab.h like a regular header 2009-01-14 19:56:50 -08:00
cache.h Rename .data.read_mostly to .data..read_mostly. 2010-03-03 11:26:00 +01:00
cacheflush.h block: add helpers to run flush_dcache_page() against a bio and a request's pages 2009-11-26 09:16:19 +01:00
checksum.h
clocksource.h clocksource: Change __ARCH_HAS_CLOCKSOURCE_DATA to a CONFIG option 2011-07-21 13:34:05 -07:00
cmpxchg.h ia64: populate the cmpxchg header with appropriate code 2012-04-13 13:15:16 -04:00
cpu.h
cputime.h Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-01-06 08:44:54 -08:00
current.h
cyclone.h
delay.h
device.h iommu: Rename the DMAR and INTR_REMAP config options 2011-09-21 10:22:03 +02:00
div64.h
dma-mapping.h X86 & IA64: adapt for dma_map_ops changes 2012-03-28 16:36:31 +02:00
dma.h
dmi.h include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
elf.h elf coredump: replace ELF_CORE_EXTRA_* macros by functions 2010-03-06 11:26:45 -08:00
emergency-restart.h
errno.h
esi.h
exec.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
fb.h
fcntl.h
fpswa.h
fpu.h Revert "Neither asm/types.h nor linux/types.h is required for arch/ia64/include/asm/fpu.h" 2009-07-17 06:35:05 -07:00
ftrace.h [IA64] sanity in #include files. Move fnptr to types.h 2010-01-06 15:52:35 -08:00
futex.h ia64: fix futex_atomic_cmpxchg_inatomic() 2012-04-16 18:30:01 -07:00
gcc_intrin.h [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
gpio.h gpiolib/arches: Centralise bolierplate asm/gpio.h 2012-05-11 18:00:14 -06:00
hardirq.h [IA64] Move local_softirq_pending() definition 2010-10-19 13:31:11 +02:00
hpsim.h hpsim, initialize chip for assigned irqs 2012-03-08 12:26:30 -08:00
hugetlb.h mm: hugetlb: add arch hook for clearing page flags before entering pool 2012-10-09 16:22:24 +09:00
hw_irq.h ia64: Remove redundant declaration of irq_desc[] 2011-03-29 14:48:05 +02:00
ia64regs.h
idle.h [IA64] xen_domu_defconfig: fix build issues/warnings 2009-05-05 11:43:13 -07:00
intel_intrin.h
intrinsics.h ia64: populate the cmpxchg header with appropriate code 2012-04-13 13:15:16 -04:00
io.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
ioctl.h
ioctls.h ioctl: Use asm-generic/ioctls.h on ia64 (enables termiox) 2010-10-22 10:20:00 -07:00
iommu_table.h ia64, iommu: Add a dummy iommu_table.h file in IA64. 2010-10-08 13:11:11 -07:00
iommu.h iommu: Remove group_mf 2012-06-25 13:48:30 +02:00
iosapic.h
ipcbuf.h consolidate a bunch of ipcbuf.h instances 2012-01-03 22:55:18 -05:00
irq_regs.h
irq_remapping.h iommu: rename intr_remapping.[ch] to irq_remapping.[ch] 2012-05-07 14:35:00 +02:00
irq.h ia64: move nr-irqs.h to include/generated 2009-12-12 13:08:14 +01:00
irqflags.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
Kbuild [IA64] Add cmpxchg.h to exported userspace headers 2012-05-16 14:04:38 -07:00
kdebug.h
kexec.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
kmap_types.h kmap_types: make most arches use generic header file 2009-06-16 19:47:51 -07:00
kprobes.h [IA64] sanity in #include files. Move fnptr to types.h 2010-01-06 15:52:35 -08:00
kregs.h
kvm_host.h KVM: Fix page-crossing MMIO 2012-04-19 20:35:07 -03:00
kvm_para.h kvmclock: Add functions to check if the host has stopped the vm 2012-04-08 12:48:59 +03:00
kvm.h KVM: Introduce __KVM_HAVE_IRQ_LINE 2012-06-18 16:06:35 +03:00
libata-portmap.h
linkage.h
local64.h arch: Implement local64_t 2010-06-09 11:12:36 +02:00
local.h
machvec_dig_vtd.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec_dig.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec_hpsim.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec_hpzx1_swiotlb.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec_hpzx1.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec_init.h [IA64] SN specific version of dma_get_required_mask() 2009-01-15 10:42:16 -08:00
machvec_sn2.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec_uv.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec_xen.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
machvec.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
mc146818rtc.h
mca_asm.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
mca.h [IA64] Save I-resources to ia64_sal_os_state 2009-12-14 16:37:58 -08:00
meminit.h ia64: don't alias VMALLOC_END to vmalloc_end 2009-10-02 13:28:55 +09:00
mman.h mm: remove duplicate asm/mman.h files 2009-09-22 07:17:42 -07:00
mmu_context.h cpumask: use mm_cpumask() wrapper: ia64 2009-03-16 14:12:48 +10:30
mmu.h
mmzone.h [IA64] removing redundant ifdef 2010-05-18 14:45:52 -07:00
module.h ia64/pv_ops/bp/module: support binary patching for kernel module. 2009-03-26 11:02:51 -07:00
msgbuf.h
msidef.h ia64: Move the macro definitions related to MSI to one header file. 2009-03-24 11:03:12 +02:00
mutex.h
nodedata.h
numa.h [IA64] Fix a node distance bug 2012-09-10 14:14:48 -07:00
page.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
pal.h Fix common misspellings 2011-03-31 11:26:23 -03:00
param.h
paravirt_patch.h ia64/pv_op/binarypatch: add helper functions to support binary patching for paravirt_ops. 2009-03-26 11:02:31 -07:00
paravirt_privop.h [IA64] fix allmodconfig compilation breakage. 2009-04-20 09:46:29 -07:00
paravirt.h static keys: Introduce 'struct static_key', static_key_true()/false() and static_key_slow_[inc|dec]() 2012-02-24 10:05:59 +01:00
parport.h
patch.h
pci.h Disintegrate and delete asm/system.h 2012-03-28 15:58:21 -07:00
percpu.h Merge branch 'for-35' of git://repo.or.cz/linux-kbuild 2010-06-01 08:55:52 -07:00
perfmon_default_smpl.h Fix common misspellings 2011-03-31 11:26:23 -03:00
perfmon.h fix typos 'comamnd' -> 'command' in comments 2011-02-02 11:31:21 +01:00
pgalloc.h mm: Pass virtual address to [__]p{te,ud,md}_free_tlb() 2009-07-27 12:10:38 -07:00
pgtable.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
poll.h
posix_types.h bury __kernel_nlink_t, make internal nlink_t consistent 2012-05-30 21:04:50 -04:00
processor.h [IA64] Rename platform_name to ia64_platform_name 2012-07-25 11:47:16 -07:00
ptrace_offsets.h
ptrace.h Audit: push audit success and retcode into arch ptrace.h 2012-01-17 16:16:56 -05:00
pvclock-abi.h
resource.h
rse.h
rwsem.h rwsem: Move duplicate function prototypes to linux/rwsem.h 2011-01-27 12:30:39 +01:00
sal.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
scatterlist.h remove needless ISA_DMA_THRESHOLD 2010-08-07 18:15:50 +02:00
sections.h
segment.h
sembuf.h
serial.h
setup.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h Add _addr_lsb field to ia64 siginfo 2010-10-12 09:37:10 +02:00
signal.h asm-generic: rename termios.h, signal.h and mman.h 2009-06-11 21:01:52 +02:00
smp.h cpumask: remove arch_send_call_function_ipi 2009-09-24 09:34:47 +09:30
socket.h net: Add framework to allow sending packets with customized CRC. 2012-02-24 01:37:35 -08:00
sockios.h
sparsemem.h
spinlock_types.h locking: Convert raw_rwlock to arch_rwlock 2009-12-14 23:55:32 +01:00
spinlock.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
stat.h
statfs.h
string.h
swab.h headers_check fix: ia64, swab.h 2009-02-01 11:01:25 +05:30
swiotlb.h swiotlb: Remove duplicate swiotlb_force extern declarations 2009-11-15 09:03:10 +01:00
switch_to.h cputime: Consolidate vtime handling on context switch 2012-08-20 13:05:28 +02:00
sync_bitops.h
syscall.h [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
termbits.h tty: Add EXTPROC support for LINEMODE 2010-08-10 13:47:39 -07:00
termios.h
thread_info.h set_restore_sigmask() is never called without SIGPENDING (and never should be) 2012-06-01 12:58:50 -04:00
timex.h ia64/pv_ops/pv_time_ops: add sched_clock hook. 2009-03-26 10:50:42 -07:00
tlb.h ia64: mmu_gather rework 2011-05-25 08:39:15 -07:00
tlbflush.h
topology.h sched/numa: Rewrite the CONFIG_NUMA sched domain support 2012-05-09 15:00:55 +02:00
types.h consolidate umode_t declarations 2012-01-03 22:55:17 -05:00
uaccess.h
ucontext.h
unaligned.h
uncached.h
unistd.h ia64: Add accept4() syscall 2012-01-09 12:55:10 -08:00
unwind.h
user.h
ustack.h
vga.h
xor.h