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1e30a014e3
linux/include/asm-powerpc
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David Gibson 9da61aef0f [PATCH] hugepage: Fix hugepage logic in free_pgtables() 
free_pgtables() has special logic to call hugetlb_free_pgd_range() instead
of the normal free_pgd_range() on hugepage VMAs.  However, the test it uses
to do so is incorrect: it calls is_hugepage_only_range on a hugepage sized
range at the start of the vma.  is_hugepage_only_range() will return true
if the given range has any intersection with a hugepage address region, and
in this case the given region need not be hugepage aligned.  So, for
example, this test can return true if called on, say, a 4k VMA immediately
preceding a (nicely aligned) hugepage VMA.

At present we get away with this because the powerpc version of
hugetlb_free_pgd_range() is just a call to free_pgd_range().  On ia64 (the
only other arch with a non-trivial is_hugepage_only_range()) we get away
with it for a different reason; the hugepage area is not contiguous with
the rest of the user address space, and VMAs are not permitted in between,
so the test can't return a false positive there.

Nonetheless this should be fixed.  We do that in the patch below by
replacing the is_hugepage_only_range() test with an explicit test of the
VMA using is_vm_hugetlb_page().

This in turn changes behaviour for platforms where is_hugepage_only_range()
returns false always (everything except powerpc and ia64).  We address this
by ensuring that hugetlb_free_pgd_range() is defined to be identical to
free_pgd_range() (instead of a no-op) on everything except ia64.  Even so,
it will prevent some otherwise possible coalescing of calls down to
free_pgd_range().  Since this only happens for hugepage VMAs, removing this
small optimization seems unlikely to cause any trouble.

This patch causes no regressions on the libhugetlbfs testsuite - ppc64
POWER5 (8-way), ppc64 G5 (2-way) and i386 Pentium M (UP).

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Cc: William Lee Irwin III <wli@holomorphy.com>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-22 07:54:03 -08:00
..
iseries [PATCH] powerpc: iSeries fixes for build with no PCI 2006-01-12 20:09:30 +11:00
8253pit.h
a.out.h
abs_addr.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
agp.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
asm-compat.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
atomic.h [PATCH] powerpc: reformat atomic_add_unless 2006-01-13 21:18:54 +11:00
auxvec.h
backlight.h
bitops.h [PATCH] powerpc: use lwsync in atomics, bitops, lock functions 2006-01-13 21:18:50 +11:00
bootx.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
btext.h [PATCH] powerpc: Unify udbg (#2) 2006-01-09 14:49:54 +11:00
bug.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
bugs.h
byteorder.h
cache.h [PATCH] Kill L1_CACHE_SHIFT_MAX 2006-01-08 20:13:39 -08:00
cacheflush.h
checksum.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
compat.h [PATCH] powerpc signal __user annotations 2006-02-08 01:03:46 -05:00
cputable.h [PATCH] powerpc: Expose SMT and L1 icache snoop userland features 2006-03-03 22:00:23 +11:00
cputime.h
current.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
dbdma.h
delay.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
div64.h
dma-mapping.h [PATCH] remove bogus asm/bug.h includes. 2006-02-07 20:56:35 -05:00
dma.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
eeh_event.h [PATCH] powerpc: PCI Error Recovery: PPC64 core recovery routines 2006-01-10 15:28:32 +11:00
eeh.h [PATCH] powerpc: restore eeh_add_device_late() prototype stub 2006-03-08 14:14:00 -08:00
elf.h powerpc: Provide a suitable AT_PLATFORM value 2006-01-14 10:11:39 +11:00
emergency-restart.h
errno.h
fcntl.h
firmware.h [PATCH] powerpc: Create a trampoline for the fwnmi vectors 2006-01-09 14:52:17 +11:00
floppy.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
futex.h [PATCH] powerpc: use lwsync in atomics, bitops, lock functions 2006-01-13 21:18:50 +11:00
grackle.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
hardirq.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
heathrow.h powerpc: Fix some #ifndef __KERNEL__ that should be #ifdef 2006-01-09 15:14:05 +11:00
hvcall.h [PATCH] powerpc: Add some more pSeries hypervisor call constants 2006-01-13 20:56:38 +11:00
hvconsole.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
hvcserver.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
hw_irq.h
i8259.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
ibmebus.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
ide.h
io.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
ioctl.h
ioctls.h
iommu.h [PATCH] powerpc: clean up iommu.h a bit 2006-01-12 20:09:30 +11:00
ipc.h
ipcbuf.h
ipic.h [PATCH] powerpc: moved ipic code to arch/powerpc 2006-01-09 14:48:57 +11:00
irq.h
kdebug.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
kdump.h [PATCH] powerpc: Reroute interrupts from 0 + offset to PHYSICAL_START + offset 2006-01-09 14:52:21 +11:00
kexec.h [PATCH] fix kexec asm 2006-03-08 14:15:04 -08:00
keylargo.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
kmap_types.h
kprobes.h [PATCH] kprobes: fix build breakage 2006-01-10 08:01:40 -08:00
linkage.h
lmb.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
local.h
lppaca.h [PATCH] Fix sparse parse error in lppaca.h 2006-01-17 17:18:25 -08:00
machdep.h [PATCH] cell: enable pause(0) in cpu_idle 2006-01-09 15:44:32 +11:00
macio.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
mc146818rtc.h
mediabay.h
mman.h [PATCH] add asm-generic/mman.h 2006-02-15 15:32:22 -08:00
mmu_context.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
mmu.h [PATCH] powerpc: Only calculate htab_size in one place for kexec 2006-02-24 11:36:18 +11:00
mmzone.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
module.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
mpic.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
msgbuf.h
mutex.h [PATCH] mutex subsystem, add default include/asm-*/mutex.h files 2006-01-09 15:59:19 -08:00
namei.h
numnodes.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
nvram.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
of_device.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
ohare.h powerpc: Fix some #ifndef __KERNEL__ that should be #ifdef 2006-01-09 15:14:05 +11:00
oprofile_impl.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
paca.h [PATCH] powerpc: Remove lppaca structure from the PACA 2006-01-13 21:17:39 +11:00
page_32.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
page_64.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
page.h powerpc/32: Fix compile error caused by pud_t/pgt_t confusion 2006-01-11 16:27:21 +11:00
param.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
parport.h [PATCH] powerpc: parallel port init fix 2006-01-11 14:49:24 +11:00
pci-bridge.h [PATCH] powerpc: small pci cleanups 2006-01-12 20:09:30 +11:00
pci.h [PATCH] powerpc: make pcibios_claim_one_bus available to other code 2006-01-09 14:51:08 +11:00
percpu.h [PATCH] powerpc/64: per cpu data optimisations 2006-01-11 14:49:45 +11:00
pgalloc.h [PATCH] powerpc: Fix accidentally-working typo in __pud_free_tlb 2006-02-17 13:59:27 -08:00
pgtable-4k.h [PATCH] powerpc: Fix incorrect pud_ERROR() message 2006-03-03 22:00:52 +11:00
pgtable-64k.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
pgtable.h [PATCH] hugepage: Fix hugepage logic in free_pgtables() 2006-03-22 07:54:03 -08:00
pmac_feature.h [PATCH] 3/5 powerpc: Add platform functions interpreter 2006-01-09 15:47:18 +11:00
pmac_low_i2c.h [PATCH] 3/5 powerpc: Add platform functions interpreter 2006-01-09 15:47:18 +11:00
pmac_pfunc.h [PATCH] powerpc: enable irq's for platform functions. 2006-02-01 08:53:10 -08:00
pmc.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
poll.h
posix_types.h
ppc_asm.h [PATCH] powerpc: Cleanup LOADADDR etc. asm macros 2006-01-13 21:16:23 +11:00
ppc-pci.h [PATCH] powerpc: properly configure DDR/P5IOC children devs 2006-03-16 16:55:07 +11:00
processor.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
prom.h [PATCH] powerpc: Don't overwrite flat device tree with kdump kernel 2006-02-07 21:32:44 +11:00
pSeries_reconfig.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
ptrace.h [PATCH] syscall entry/exit revamp 2006-01-09 14:49:01 +11:00
reg_8xx.h
reg.h [PATCH] powerpc: Fix runlatch performance issues 2006-02-24 11:36:31 +11:00
resource.h
rtas.h [PATCH] powerpc: Make early debugging configurable via Kconfig 2006-01-11 14:48:26 +11:00
rtc.h
rwsem.h
scatterlist.h
seccomp.h powerpc: Fix some #ifndef __KERNEL__ that should be #ifdef 2006-01-09 15:14:05 +11:00
sections.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
semaphore.h
sembuf.h
serial.h powerpc: Introduce a new config symbol to control 16550 early debug code 2006-01-10 16:19:05 +11:00
setup.h
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
smp.h
smu.h [PATCH] powerpc: Thermal control for dual core G5s 2006-02-07 22:05:14 -08:00
socket.h
sockios.h
sparsemem.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
spinlock_types.h
spinlock.h [PATCH] powerpc: use lwsync in atomics, bitops, lock functions 2006-01-13 21:18:50 +11:00
spu_csa.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
spu.h [PATCH] spufs: set irq affinity for running threads 2006-01-09 15:44:57 +11:00
sstep.h
stat.h
statfs.h
string.h
synch.h [PATCH] powerpc: use lwsync in atomics, bitops, lock functions 2006-01-13 21:18:50 +11:00
system.h [PATCH] powerpc: use lwsync in atomics, bitops, lock functions 2006-01-13 21:18:50 +11:00
tce.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
termbits.h
termios.h
thread_info.h powerpc: Fix various syscall/signal/swapcontext bugs 2006-03-08 13:24:22 +11:00
time.h [PATCH] powerpc: Remove lppaca structure from the PACA 2006-01-13 21:17:39 +11:00
timex.h
tlb.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
tlbflush.h
topology.h [PATCH] scheduler cache-hot-autodetect 2006-01-12 09:08:50 -08:00
types.h
uaccess.h
ucontext.h
udbg.h [PATCH] powerpc: Make early debugging configurable via Kconfig 2006-01-11 14:48:26 +11:00
unaligned.h
uninorth.h
unistd.h [PATCH] powerpc: unshare system call registration 2006-02-10 16:34:54 +11:00
user.h
vdso_datapage.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
vdso.h
vga.h
vio.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
xmon.h
xor.h