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linux/arch/sh/include/asm
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Nadav Amit caa8b9ed84 hugetlbfs: flush TLBs correctly after huge_pmd_unshare 
commit a4a118f2ee upstream.

When __unmap_hugepage_range() calls to huge_pmd_unshare() succeed, a TLB
flush is missing.  This TLB flush must be performed before releasing the
i_mmap_rwsem, in order to prevent an unshared PMDs page from being
released and reused before the TLB flush took place.

Arguably, a comprehensive solution would use mmu_gather interface to
batch the TLB flushes and the PMDs page release, however it is not an
easy solution: (1) try_to_unmap_one() and try_to_migrate_one() also call
huge_pmd_unshare() and they cannot use the mmu_gather interface; and (2)
deferring the release of the page reference for the PMDs page until
after i_mmap_rwsem is dropeed can confuse huge_pmd_unshare() into
thinking PMDs are shared when they are not.

Fix __unmap_hugepage_range() by adding the missing TLB flush, and
forcing a flush when unshare is successful.

Fixes: 24669e5847 ("hugetlb: use mmu_gather instead of a temporary linked list for accumulating pages)" # 3.6
Signed-off-by: Nadav Amit <namit@vmware.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-05-16 12:21:06 +09:00
..
adc.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
addrspace.h
sh: nommu: use 32-bit phys mode.
2010-11-04 12:32:24 +09:00
alignment.h
sh: Split out the unaligned counters and user bits.
2010-01-12 16:12:25 +09:00
asm-offsets.h
kbuild: move asm-offsets.h to include/generated
2009-12-12 13:08:14 +01:00
atomic-grb.h
locking/atomic, arch/sh: Implement atomic_fetch_{add,sub,and,or,xor}()
2016-06-16 10:48:29 +02:00
atomic-irq.h
locking/atomic, arch/sh: Implement atomic_fetch_{add,sub,and,or,xor}()
2016-06-16 10:48:29 +02:00
atomic-llsc.h
locking/atomic, arch/sh: Fix ATOMIC_FETCH_OP()
2016-09-22 14:47:02 +02:00
atomic.h
sh: add J2 atomics using the cas.l instruction
2016-08-05 03:29:34 +00:00
barrier.h
sh: add J2 atomics using the cas.l instruction
2016-08-05 03:29:34 +00:00
bitops-cas.h
sh: add J2 atomics using the cas.l instruction
2016-08-05 03:29:34 +00:00
bitops-grb.h
sh: Convert to generic bitops for IRQ-toggling implementation.
2008-12-22 18:42:53 +09:00
bitops-llsc.h
sh: Relax inline assembly constraints
2009-01-29 11:57:09 +09:00
bitops-op32.h
sh: Provide optimized non-atomic bitops for SH-2A.
2008-12-22 18:42:54 +09:00
bitops.h
sh: add J2 atomics using the cas.l instruction
2016-08-05 03:29:34 +00:00
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
sh: Idle loop chainsawing for SMP-based light sleep.
2009-10-16 17:20:58 +09:00
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
Merge branch 'for-35' of git://repo.or.cz/linux-kbuild
2010-06-01 08:55:52 -07:00
cacheflush.h
sh: Assume new page cache pages have dirty dcache lines.
2010-12-01 15:39:51 +09:00
checksum_32.h
ipv6: Pass proto to csum_ipv6_magic as __u8 instead of unsigned short
2016-03-13 23:55:13 -04:00
checksum.h
UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers
2012-10-02 18:01:25 +01:00
clock.h
sh: sh header sh_clk_ops rename
2012-03-12 22:19:10 +01:00
cmpxchg-cas.h
sh: add J2 atomics using the cas.l instruction
2016-08-05 03:29:34 +00:00
cmpxchg-grb.h
sh: support 1 and 2 byte xchg
2016-01-12 20:47:01 +02:00
cmpxchg-irq.h
sh: support 1 and 2 byte xchg
2016-01-12 20:47:01 +02:00
cmpxchg-llsc.h
sh: move xchg_cmpxchg to a header by itself
2016-01-12 20:47:02 +02:00
cmpxchg-xchg.h
sh: cmpxchg: fix a bit shift bug in big_endian os
2016-07-31 03:33:32 +00:00
cmpxchg.h
sh: add J2 atomics using the cas.l instruction
2016-08-05 03:29:34 +00:00
device.h
sh: Defer to asm-generic/device.h.
2012-01-13 16:27:38 +09:00
dma-mapping.h
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
dma-register.h
dmaengine: shdma: Add more register documentation
2014-07-09 10:55:57 +02:00
dma.h
sh: Kill off MAX_DMA_ADDRESS leftovers.
2012-05-19 18:50:09 +09:00
dmabrg.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
dwarf.h
sh: Optimise FDE/CIE lookup by using red-black trees
2010-02-08 11:29:15 +09:00
elf.h
sh: Fix FDPIC binary loader
2013-01-11 21:02:57 +09:00
entry-macros.S
sh: Remove implicit sign extension from assembler immediates
2009-08-24 17:09:53 +09:00
fb.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
fixmap.h
sh: use generic fixmap.h
2014-01-23 16:36:54 -08:00
flat.h
flat: fix data sections alignment
2009-05-29 08:40:02 -07:00
fpu.h
sh: move fpu_counter into ARCH specific thread_struct
2013-11-13 12:09:13 +09:00
freq.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
ftrace.h
ftrace: Format MCOUNT_ADDR address as type unsigned long
2015-07-20 22:30:53 -04:00
futex-cas.h
sh: add working futex atomic ops on userspace addresses for smp
2016-08-05 03:29:36 +00:00
futex-irq.h
sh: add working futex atomic ops on userspace addresses for smp
2016-08-05 03:29:36 +00:00
futex-llsc.h
sh: add working futex atomic ops on userspace addresses for smp
2016-08-05 03:29:36 +00:00
futex.h
futex: Remove duplicated code and fix undefined behaviour
2018-05-19 10:27:00 +02:00
gpio.h
sh: Remove unused sh_pfc_register_info() function
2013-01-25 09:24:30 +09:00
hardirq.h
sh: Count NMIs in irq_cpustat_t.
2009-10-14 16:42:28 +09:00
hd64461.h
sh: mach-hp6xx: Fix up the hp6xx build for hd64461 changes.
2009-05-20 11:27:13 +09:00
heartbeat.h
sh: Prevent heartbeat from scribbling over non-LED bits.
2009-08-18 21:16:29 +09:00
hugetlb.h
mm/hugetlb: remove arch_prepare/release_hugepage from arch headers
2015-06-25 17:00:35 -07:00
hw_breakpoint.h
UAPI: (Scripted) Disintegrate arch/sh/include/asm
2012-10-09 09:47:37 +01:00
hw_irq.h
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
i2c-sh7760.h
sh: edosk7760 evt2irq migration.
2012-05-18 14:52:31 +09:00
io_generic.h
sh: machvec IO death.
2010-11-01 09:49:04 -04:00
io_noioport.h
sh: fix build error by adding generic ioport_{map/unmap}()
2014-08-06 18:01:13 -07:00
io_trapped.h
Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP
2014-04-07 16:36:11 -07:00
io.h
sh: prevent warnings when using iounmap
2023-05-15 14:08:10 +09:00
irq.h
sh: Kill off machvec IRQ hinting.
2012-05-21 17:54:01 +09:00
irqflags.h
Fix IRQ flag handling naming
2010-10-07 14:08:55 +01:00
Kbuild
locking/rwsem, sh: Drop superfluous arch specific implementation
2016-04-13 10:42:19 +02:00
kdebug.h
sh64: Convert to unwinder API.
2012-05-24 15:03:46 +09:00
kexec.h
sh: convert kexec crash kernel management to LMB.
2010-05-07 14:54:55 +09:00
kgdb.h
sh: kgdb: Unset CACHE_FLUSH_IS_SAFE for SMP.
2012-04-11 10:48:24 +09:00
kmap_types.h
kmap_types: make most arches use generic header file
2009-06-16 19:47:51 -07:00
kprobes.h
sh: Add kprobe-based event tracer.
2010-06-14 15:16:53 +09:00
linkage.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
machvec.h
Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP
2014-04-07 16:36:11 -07:00
mmu_context_32.h
sh: Mass ctrl_in/outX to __raw_read/writeX conversion.
2010-01-26 12:58:40 +09:00
mmu_context_64.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
mmu_context.h
Fix weird uses of num_online_cpus().
2015-03-10 13:54:42 +10:30
mmu.h
sh: Fix up NUMA build for 29-bit.
2010-03-10 16:29:48 +09:00
mmzone.h
Fix node_start/end_pfn() definition for mm/page_cgroup.c
2011-06-27 14:13:09 -07:00
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
sh: Add SH-4A optimized fastpath mutex implementation.
2008-12-22 18:42:55 +09:00
page.h
sh: add copy_user_page() alias for __copy_user()
2015-10-16 11:42:28 -07:00
pci.h
PCI: Move pci_dma_* helpers to common code
2016-03-07 10:40:02 -06:00
perf_event.h
irq_work: Add generic hardirq context callbacks
2010-10-18 19:58:50 +02:00
pgalloc.h
tree wide: get rid of __GFP_REPEAT for order-0 allocations part I
2016-06-24 17:23:52 -07:00
pgtable_32.h
sh: drop _PAGE_FILE and pte_file()-related helpers
2015-02-10 14:30:33 -08:00
pgtable_64.h
sh: drop _PAGE_FILE and pte_file()-related helpers
2015-02-10 14:30:33 -08:00
pgtable-2level.h
sh: Rename split-level pgtable headers.
2010-01-13 19:18:39 +09:00
pgtable-3level.h
sh: Rename split-level pgtable headers.
2010-01-13 19:18:39 +09:00
pgtable.h
mm: make FIRST_USER_ADDRESS unsigned long on all archs
2015-02-11 17:06:03 -08:00
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
sh: add support for J-Core J2 processor
2016-08-05 03:29:31 +00:00
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
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
reboot.h
sh: machine_ops based reboot support.
2010-01-20 16:42:52 +09:00
romimage-macros.h
sh: add romimage-macros.h
2009-09-11 13:19:16 +09:00
rtc.h
rtc: sh: provide rtc_class_ops directly
2016-06-04 00:22:46 +02:00
seccomp.h
sh: seccomp support.
2008-08-02 04:39:32 +09:00
sections.h
nosave: consolidate __nosave_{begin,end} in <asm/sections.h>
2014-10-09 22:26:04 -04:00
segment.h
sh: macro whitespace fixes
2015-01-13 15:24:08 +02:00
setup.h
UAPI: (Scripted) Disintegrate arch/sh/include/asm
2012-10-09 09:47:37 +01:00
sfp-machine.h
sh: define __BIG_ENDIAN for math-emu
2023-05-16 12:16:18 +09:00
sh7760fb.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
sh_bios.h
sh: Kill off more unused sh_bios callbacks.
2010-01-12 15:26:11 +09:00
shmparam.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
siu.h
sh: remove unused DMA device pointer from SIU platform data
2012-07-20 11:23:44 +05:30
smc37c93x.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
smp-ops.h
sh: CPU hotplug support.
2010-04-26 19:08:55 +09:00
smp.h
sh: fix smp-shx3 build regression from removal of arch localtimer
2016-03-29 22:03:50 +00:00
sparsemem.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
spi.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
spinlock_types.h
locking: Convert raw_rwlock to arch_rwlock
2009-12-14 23:55:32 +01:00
spinlock-cas.h
sh: add J2 atomics using the cas.l instruction
2016-08-05 03:29:34 +00:00
spinlock-llsc.h
sh: add J2 atomics using the cas.l instruction
2016-08-05 03:29:34 +00:00
spinlock.h
sh: add J2 atomics using the cas.l instruction
2016-08-05 03:29:34 +00:00
sram.h
sh: Provide a generic SRAM pool for tiny memories.
2010-10-15 02:09:00 +09:00
stackprotector.h
sh: initial stack protector support.
2012-04-19 15:45:57 +09:00
stacktrace.h
sh: remove warning and warning_symbol from struct stacktrace_ops
2011-05-23 14:42:15 +09:00
string_32.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
string_64.h
sh: Add SH-5 optimized memcpy()/memset()/strcpy()/strlen().
2008-12-22 18:44:05 +09:00
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
sched, sh: Fold finish_arch_switch() into switch_to()
2015-08-04 09:38:05 +02:00
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
SH: define syscall_get_arch() for superh
2014-09-23 16:20:01 -04:00
syscall_64.h
SH: define syscall_get_arch() for superh
2014-09-23 16:20:01 -04:00
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
signal: consolidate {TS,TLF}_RESTORE_SIGMASK code
2016-08-02 19:35:23 -04:00
timex.h
sh: Only provide a PCLK definition for legacy CPG CPUs.
2009-12-29 11:09:30 +09:00
tlb_64.h
sh: Fix up broken kerneldoc comments.
2008-08-04 12:51:06 +09:00
tlb.h
hugetlbfs: flush TLBs correctly after huge_pmd_unshare
2023-05-16 12:21:06 +09:00
tlbflush.h
sh: Provide a global TLB flush for U/I-TLB clear.
2010-07-02 15:44:09 +09:00
topology.h
sh: fix function signature of cpu_coregroup_mask to match pointer type
2016-03-30 00:47:49 +00:00
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
sh64: failing __get_user() should zero
2016-09-13 17:50:14 -04:00
uaccess.h
exceptions: detritus removal
2016-09-27 21:15:14 -04:00
unaligned-sh4a.h
Fix common misspellings
2011-03-31 11:26:23 -03:00
unaligned.h
sh: Convert to asm-generic/unaligned.h.
2009-06-14 23:24:43 +09:00
uncached.h
sh: nommu: Support building without an uncached mapping.
2010-11-04 12:46:19 +09:00
unistd.h
sys_sgetmask/sys_ssetmask: add CONFIG_SGETMASK_SYSCALL
2014-06-04 16:54:14 -07:00
unwinder.h
sh: unwinder: Introduce UNWINDER_BUG() and UNWINDER_BUG_ON()
2009-08-21 13:02:44 +01:00
user.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
vga.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
vmlinux.lds.h
sh64: fix up memory offset calculation.
2010-02-12 15:41:45 +09:00
watchdog.h
sh: Mass ctrl_in/outX to __raw_read/writeX conversion.
2010-01-26 12:58:40 +09:00
word-at-a-time.h
sh: use the new generic strnlen_user() function
2012-06-13 10:28:37 +09:00