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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 [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
a.out.h [PATCH] powerpc: Merge include/asm-ppc*/a.out.h into include/asm-powerpc 2005-09-21 19:21:08 +10:00
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 [PATCH] powerpc: Merge vdso's and add vdso support to 32 bits kernel 2005-11-11 22:25:39 +11:00
backlight.h powerpc: Merged asm/backlight.h 2005-10-11 09:59:38 +10:00
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 [PATCH] powerpc: Make check_bugs() static inline 2005-09-09 22:11:35 +10:00
byteorder.h [PATCH] powerpc: merge byteorder.h 2005-09-28 15:42:53 +10:00
cache.h [PATCH] Kill L1_CACHE_SHIFT_MAX 2006-01-08 20:13:39 -08:00
cacheflush.h [PATCH] powerpc: Merge cacheflush.h and cache.h 2005-11-10 13:09:22 +11:00
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 [PATCH] Move the identical files from include/asm-ppc{,64} 2005-08-30 13:32:05 +10:00
current.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
dbdma.h powerpc: Merge various powermac-related header files. 2005-10-20 20:53:39 +10:00
delay.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
div64.h [PATCH] Move the identical files from include/asm-ppc{,64} 2005-08-30 13:32:05 +10:00
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 [PATCH] Move the identical files from include/asm-ppc{,64} 2005-08-30 13:32:05 +10:00
errno.h [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
fcntl.h [PATCH] Consolidate the asm-ppc*/fcntl.h files into asm-powerpc 2005-09-07 16:57:39 -07:00
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 ppc64: remove ppc_irq_dispatch_handler 2005-11-09 16:19:53 +11:00
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 powerpc: merge ide.h 2005-11-08 12:20:34 +11:00
io.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
ioctl.h [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
ioctls.h powerpc: remove duplicate ioctl definitions 2005-11-01 14:36:30 +11:00
iommu.h [PATCH] powerpc: clean up iommu.h a bit 2006-01-12 20:09:30 +11:00
ipc.h [PATCH] Move the identical files from include/asm-ppc{,64} 2005-08-30 13:32:05 +10:00
ipcbuf.h [PATCH] powerpc: Keep fixing merged ipcbuf.h 2005-11-03 16:58:17 +11:00
ipic.h [PATCH] powerpc: moved ipic code to arch/powerpc 2006-01-09 14:48:57 +11:00
irq.h [PATCH] ppc32: fix PQ2 PCI DMA interrupt handling 2005-11-11 22:19:56 +11:00
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 [PATCH] powerpc: Merge kmap_types.h 2005-09-19 09:38:49 +10:00
kprobes.h [PATCH] kprobes: fix build breakage 2006-01-10 08:01:40 -08:00
linkage.h [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
lmb.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
local.h [PATCH] Move all the very similar files to asm-powerpc 2005-08-30 13:32:06 +10:00
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 [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
mediabay.h powerpc: Merge various powermac-related header files. 2005-10-20 20:53:39 +10:00
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 [PATCH] powerpc: Merge a few more include files 2005-09-09 22:11:35 +10:00
mutex.h [PATCH] mutex subsystem, add default include/asm-*/mutex.h files 2006-01-09 15:59:19 -08:00
namei.h [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
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 [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
posix_types.h [PATCH] powerpc: Merge asm-ppc*/posix_types.h 2005-09-21 19:21:07 +10:00
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 [PATCH] powerpc: Merge cacheflush.h and cache.h 2005-11-10 13:09:22 +11:00
reg.h [PATCH] powerpc: Fix runlatch performance issues 2006-02-24 11:36:31 +11:00
resource.h [PATCH] Move all the very similar files to asm-powerpc 2005-08-30 13:32:06 +10:00
rtas.h [PATCH] powerpc: Make early debugging configurable via Kconfig 2006-01-11 14:48:26 +11:00
rtc.h powerpc: Make set_rtc_time() return error code from lower-level function 2005-10-22 15:57:55 +10:00
rwsem.h Merge ../linux-2.6 by hand 2005-10-31 13:37:12 +11:00
scatterlist.h [PATCH] powerpc: merge scatterlist.h 2005-10-27 16:45:52 +10:00
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 Merge ../linux-2.6 by hand 2005-10-31 13:37:12 +11:00
sembuf.h [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
serial.h powerpc: Introduce a new config symbol to control 16550 early debug code 2006-01-10 16:19:05 +11:00
setup.h [PATCH] powerpc: Merge a few more include files 2005-09-09 22:11:35 +10:00
shmbuf.h [PATCH] powerpc: Fix __power64__ typos that should be __powerpc64__ 2005-09-09 22:11:35 +10:00
shmparam.h [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
sigcontext.h powerpc: merge sigcontext.h 2005-11-03 16:24:25 +11:00
siginfo.h [PATCH] ppc64: Add definitions for new PTRACE calls 2005-09-12 17:19:12 +10:00
signal.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
smp.h powerpc: Various UP build fixes 2005-11-07 13:18:13 +11:00
smu.h [PATCH] powerpc: Thermal control for dual core G5s 2006-02-07 22:05:14 -08:00
socket.h [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
sockios.h [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
sparsemem.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
spinlock_types.h [PATCH] powerpc: merge include/asm-ppc*/spinlock_types.h into include/asm-powerpc/spinlock_types.h 2005-09-21 19:21:09 +10:00
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 powerpc: Make single-stepping emulation (mostly) usable on 32-bit 2005-10-28 22:48:08 +10:00
stat.h powerpc: merge stat.h 2005-11-03 16:02:23 +11:00
statfs.h [PATCH] powerpc: merge include/asm-ppc*/statfs.h into include/asm-powerpc/statfs.h 2005-09-21 19:21:10 +10:00
string.h [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
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 [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
termios.h powerpc: use asm-generic/termios.h 2005-11-01 14:36:55 +11:00
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 [PATCH] ppc32: Fix timekeeping 2005-10-12 08:24:47 -07:00
tlb.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
tlbflush.h [PATCH] ppc64: support 64k pages 2005-11-06 16:56:47 -08:00
topology.h [PATCH] scheduler cache-hot-autodetect 2006-01-12 09:08:50 -08:00
types.h [PATCH] ppc64: make dma_addr_t 64 bits 2005-10-27 16:45:50 +10:00
uaccess.h [PATCH] powerpc: Consolidate asm compatibility macros 2005-11-10 13:10:38 +11:00
ucontext.h powerpc: merge ucontext.h 2005-11-03 16:59:17 +11:00
udbg.h [PATCH] powerpc: Make early debugging configurable via Kconfig 2006-01-11 14:48:26 +11:00
unaligned.h [PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix 2005-09-09 22:11:34 +10:00
uninorth.h powerpc: Merge various powermac-related header files. 2005-10-20 20:53:39 +10:00
unistd.h [PATCH] powerpc: unshare system call registration 2006-02-10 16:34:54 +11:00
user.h [PATCH] powerpc: Merge a few more include files 2005-09-09 22:11:35 +10:00
vdso_datapage.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
vdso.h [PATCH] powerpc: Make the vDSO functions set error code (#2) 2005-11-16 14:05:11 +11:00
vga.h [PATCH] powerpc: Merge asm-ppc*/vga.h 2005-09-21 19:21:09 +10:00
vio.h [PATCH] powerpc: sanitize header files for user space includes 2006-01-09 15:13:08 +11:00
xmon.h powerpc: Simplify and clean up the xmon terminal I/O 2005-11-08 22:55:08 +11:00
xor.h [PATCH] Move the identical files from include/asm-ppc{,64} 2005-08-30 13:32:05 +10:00