Linus Torvalds 1cf35d4771 mm: split 'tlb_flush_mmu()' into tlb flushing and memory freeing parts ... The mmu-gather operation 'tlb_flush_mmu()' has done two things: the actual tlb flush operation, and the batched freeing of the pages that the TLB entries pointed at. This splits the operation into separate phases, so that the forced batched flushing done by zap_pte_range() can now do the actual TLB flush while still holding the page table lock, but delay the batched freeing of all the pages to after the lock has been dropped. This in turn allows us to avoid a race condition between set_page_dirty() (as called by zap_pte_range() when it finds a dirty shared memory pte) and page_mkclean(): because we now flush all the dirty page data from the TLB's while holding the pte lock, page_mkclean() will be held up walking the (recently cleaned) page tables until after the TLB entries have been flushed from all CPU's. Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Tested-by: Dave Hansen <dave.hansen@intel.com> Acked-by: Hugh Dickins <hughd@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King - ARM Linux <linux@arm.linux.org.uk> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-04-25 16:05:40 -07:00
..
adc.h
addrspace.h
alignment.h
asm-offsets.h
atomic-grb.h
atomic-irq.h	Disintegrate asm/system.h for SH	2012-03-28 18:30:03 +01:00
atomic-llsc.h
atomic.h	sh: Fix up tracepoint build fallout from static key introduction.	2012-04-27 11:12:38 +09:30
barrier.h	arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h	2014-01-12 10:37:15 +01:00
bitops-grb.h
bitops-llsc.h
bitops-op32.h
bitops.h	Disintegrate asm/system.h for SH	2012-03-28 18:30:03 +01:00
bl_bit_32.h	Disintegrate asm/system.h for SH	2012-03-28 18:30:03 +01:00
bl_bit_64.h	Disintegrate asm/system.h for SH	2012-03-28 18:30:03 +01:00
bl_bit.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
bug.h	sh: Consolidate die definitions for trap handlers.	2012-06-14 14:18:51 +09:00
bugs.h
cache_insns_32.h	Disintegrate asm/system.h for SH	2012-03-28 18:30:03 +01:00
cache_insns_64.h	Disintegrate asm/system.h for SH	2012-03-28 18:30:03 +01:00
cache_insns.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
cache.h
cacheflush.h
checksum_32.h
checksum.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
clkdev.h	clk: Add common __clk_get(), __clk_put() implementations	2013-12-04 17:19:44 +01:00
clock.h
cmpxchg-grb.h
cmpxchg-irq.h	Disintegrate asm/system.h for SH	2012-03-28 18:30:03 +01:00
cmpxchg-llsc.h
cmpxchg.h	Disintegrate asm/system.h for SH	2012-03-28 18:30:03 +01:00
device.h
dma-mapping.h	sh: dma_debug: add debug_dma_mapping_error support	2012-11-28 15:29:00 +01:00
dma-register.h
dma.h	sh: Kill off MAX_DMA_ADDRESS leftovers.	2012-05-19 18:50:09 +09:00
dmabrg.h
dwarf.h
elf.h	sh: Fix FDPIC binary loader	2013-01-11 21:02:57 +09:00
entry-macros.S
fb.h
fixmap.h	sh: use generic fixmap.h	2014-01-23 16:36:54 -08:00
flat.h
fpu.h	sh: move fpu_counter into ARCH specific thread_struct	2013-11-13 12:09:13 +09:00
freq.h
ftrace.h
futex-irq.h	Disintegrate asm/system.h for SH	2012-03-28 18:30:03 +01:00
futex.h
gpio.h	sh: Remove unused sh_pfc_register_info() function	2013-01-25 09:24:30 +09:00
hardirq.h
hd64461.h
heartbeat.h
hugetlb.h	mm/hugetlb: add more arch-defined huge_pte functions	2013-04-29 15:54:33 -07:00
hw_breakpoint.h	UAPI: (Scripted) Disintegrate arch/sh/include/asm	2012-10-09 09:47:37 +01:00
hw_irq.h
i2c-sh7760.h	sh: edosk7760 evt2irq migration.	2012-05-18 14:52:31 +09:00
io_generic.h
io_noioport.h	SH: Convert out[bwl] macros to inline functions	2012-07-12 13:12:13 +09:00
io_trapped.h	Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP	2014-04-07 16:36:11 -07:00
io.h	Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP	2014-04-07 16:36:11 -07:00
irq.h	sh: Kill off machvec IRQ hinting.	2012-05-21 17:54:01 +09:00
irqflags.h
Kbuild	locking/mcs: Allow architecture specific asm files to be used for contended case	2014-02-09 21:18:52 +01:00
kdebug.h	sh64: Convert to unwinder API.	2012-05-24 15:03:46 +09:00
kexec.h
kgdb.h	sh: kgdb: Unset CACHE_FLUSH_IS_SAFE for SMP.	2012-04-11 10:48:24 +09:00
kmap_types.h
kprobes.h
linkage.h
machvec.h	Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP	2014-04-07 16:36:11 -07:00
mc146818rtc.h
mmu_context_32.h
mmu_context_64.h
mmu_context.h	treewide: fix "distingush" typo	2013-10-14 15:38:33 +02:00
mmu.h
mmzone.h
module.h	Make most arch asm/module.h files use asm-generic/module.h	2012-09-28 14:31:03 +09:30
mutex-llsc.h	arch: Make __mutex_fastpath_lock_retval return whether fastpath succeeded or not	2013-06-26 12:10:55 +02:00
mutex.h
page.h
pci.h
perf_event.h
pgalloc.h	sh: handle pgtable_page_ctor() fail	2013-11-15 09:32:18 +09:00
pgtable_32.h
pgtable_64.h	sh64: Kill off unused fixed I/O mapping window.	2012-05-14 15:16:11 +09:00
pgtable-2level.h
pgtable-3level.h
pgtable.h	consolidate io_remap_pfn_range definitions	2013-06-29 12:46:35 +04:00
posix_types.h	UAPI: (Scripted) Disintegrate arch/sh/include/asm	2012-10-09 09:47:37 +01:00
processor_32.h	sh: move fpu_counter into ARCH specific thread_struct	2013-11-13 12:09:13 +09:00
processor_64.h	sh: move fpu_counter into ARCH specific thread_struct	2013-11-13 12:09:13 +09:00
processor.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
ptrace_32.h	UAPI: (Scripted) Disintegrate arch/sh/include/asm	2012-10-09 09:47:37 +01:00
ptrace_64.h	UAPI: (Scripted) Disintegrate arch/sh/include/asm	2012-10-09 09:47:37 +01:00
ptrace.h	UAPI: (Scripted) Disintegrate arch/sh/include/asm	2012-10-09 09:47:37 +01:00
push-switch.h
reboot.h
romimage-macros.h
rtc.h
rwsem.h
seccomp.h
sections.h	mtd/uclinux: Use generic __bss_stop instead of _ebss	2012-06-27 09:59:43 +02:00
segment.h
setup.h	UAPI: (Scripted) Disintegrate arch/sh/include/asm	2012-10-09 09:47:37 +01:00
sfp-machine.h
sh7760fb.h
sh_bios.h
shmparam.h
siu.h	sh: remove unused DMA device pointer from SIU platform data	2012-07-20 11:23:44 +05:30
smc37c93x.h
smp-ops.h
smp.h
sparsemem.h
spi.h
spinlock_types.h
spinlock.h
sram.h
stackprotector.h	sh: initial stack protector support.	2012-04-19 15:45:57 +09:00
stacktrace.h
string_32.h
string_64.h
string.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
suspend.h	SH: cpuidle: check error code at init	2013-04-22 00:35:53 +02:00
switch_to_32.h	Disintegrate asm/system.h for SH	2012-03-28 18:30:03 +01:00
switch_to_64.h	Disintegrate asm/system.h for SH	2012-03-28 18:30:03 +01:00
switch_to.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
syscall_32.h
syscall_64.h
syscall.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
syscalls_32.h	sh: push extra copy of r0-r2 for syscall parameters	2014-04-03 16:20:52 -07:00
syscalls_64.h	sh: switch to generic fork/vfork/clone	2012-11-28 22:36:47 -05:00
syscalls.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
thread_info.h	preempt: Make PREEMPT_ACTIVE generic	2013-11-13 20:21:47 +01:00
timex.h
tlb_64.h
tlb.h	mm: split 'tlb_flush_mmu()' into tlb flushing and memory freeing parts	2014-04-25 16:05:40 -07:00
tlbflush.h
topology.h	sched/numa: Rewrite the CONFIG_NUMA sched domain support	2012-05-09 15:00:55 +02:00
traps_32.h	sh: don't pass saved userspace state to exception handlers	2014-04-03 16:20:52 -07:00
traps_64.h	sh64: Provide EXPEVT helper.	2012-05-14 13:04:08 +09:00
traps.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
types.h	UAPI: (Scripted) Disintegrate arch/sh/include/asm	2012-10-09 09:47:37 +01:00
uaccess_32.h	sh: use the new generic strnlen_user() function	2012-06-13 10:28:37 +09:00
uaccess_64.h	sh: use the new generic strnlen_user() function	2012-06-13 10:28:37 +09:00
uaccess.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
unaligned-sh4a.h
unaligned.h
uncached.h
unistd.h	consolidate cond_syscall and SYSCALL_ALIAS declarations	2013-03-03 22:55:19 -05:00
unwinder.h
user.h
vga.h
vmlinux.lds.h
watchdog.h
word-at-a-time.h	sh: use the new generic strnlen_user() function	2012-06-13 10:28:37 +09:00