Michael S. Tsirkin
f822566165
[PATCH] madvise MADV_DONTFORK/MADV_DOFORK
...
Currently, copy-on-write may change the physical address of a page even if the
user requested that the page is pinned in memory (either by mlock or by
get_user_pages). This happens if the process forks meanwhile, and the parent
writes to that page. As a result, the page is orphaned: in case of
get_user_pages, the application will never see any data hardware DMA's into
this page after the COW. In case of mlock'd memory, the parent is not getting
the realtime/security benefits of mlock.
In particular, this affects the Infiniband modules which do DMA from and into
user pages all the time.
This patch adds madvise options to control whether memory range is inherited
across fork. Useful e.g. for when hardware is doing DMA from/into these
pages. Could also be useful to an application wanting to speed up its forks
by cutting large areas out of consideration.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Acked-by: Hugh Dickins <hugh@veritas.com>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-14 16:09:34 -08:00
..
a.out.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
adb.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
adb_iop.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
amigahw.h
[PATCH] m68k: namespace pollution fix (custom->amiga_custom)
2006-01-12 09:09:00 -08:00
amigaints.h
[PATCH] m68k: static vs. extern in amigaints.h
2006-01-12 09:09:01 -08:00
amigayle.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
amipcmcia.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
apollodma.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
apollohw.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
atafd.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
atafdreg.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
atari_acsi.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
atari_joystick.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
atari_SLM.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
atari_stdma.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
atari_stram.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
atarihw.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
atariints.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
atarikb.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
atomic.h
[PATCH] mutex subsystem, add atomic_xchg() to all arches
2006-01-09 15:59:17 -08:00
auxvec.h
[PATCH] auxiliary vector cleanups
2005-09-07 16:57:21 -07:00
bitops.h
[FLS64]: generic version
2006-01-03 13:11:06 -08:00
blinken.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
bootinfo.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
bug.h
[PATCH] remove all kernel BUGs
2005-05-01 08:59:01 -07:00
bugs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
bvme6000hw.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
byteorder.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
cache.h
[PATCH] Kill L1_CACHE_SHIFT_MAX
2006-01-08 20:13:39 -08:00
cachectl.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
cacheflush.h
[PATCH] m68k: move cache functions into separate file
2005-09-05 00:06:19 -07:00
checksum.h
[PATCH] m68k: checksum __user annotations
2006-01-12 09:09:03 -08:00
contregs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
cputime.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
current.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
delay.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
div64.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
dma-mapping.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
dma.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
dsp56k.h
[PATCH] m68k: dsp56k __user annotations
2006-01-12 09:09:04 -08:00
dvma.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
elf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
emergency-restart.h
[PATCH] Add emergency_restart()
2005-07-26 14:35:41 -07:00
entry.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
errno.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
fbio.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
fcntl.h
[PATCH] Clean up struct flock64 definitions
2005-09-07 16:57:38 -07:00
floppy.h
[PATCH] m68k: NULL noise removal
2006-01-12 09:09:04 -08:00
fpu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
futex.h
[PATCH] consolidate asm/futex.h
2006-01-08 20:13:39 -08:00
hardirq.h
[PATCH] m68k: compile fix - hardirq checks were in wrong place
2006-01-12 09:08:59 -08:00
hp300hw.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
hw_irq.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
hwtest.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ide.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
idprom.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
intersil.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
io.h
[PATCH] m68k: basic iomem annotations
2006-01-12 09:09:02 -08:00
ioctl.h
[PATCH] Generic ioctl.h
2006-01-10 08:01:34 -08:00
ioctls.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ipc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ipcbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
irq.h
[PATCH] m68k: compile fix - hardirq checks were in wrong place
2006-01-12 09:08:59 -08:00
kmap_types.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
linkage.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
local.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mac_asc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mac_baboon.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mac_iop.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mac_mouse.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mac_oss.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mac_psc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mac_via.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
machdep.h
[PATCH] m68k: kill mach_floppy_setup, convert to proper __setup() in drivers
2006-01-12 09:09:05 -08:00
machines.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
machw.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
macintosh.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
macints.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
math-emu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mc146818rtc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
md.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mman.h
[PATCH] madvise MADV_DONTFORK/MADV_DOFORK
2006-02-14 16:09:34 -08:00
mmu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mmu_context.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
module.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
motorola_pgalloc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
motorola_pgtable.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
movs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
msgbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mutex.h
[PATCH] mutex subsystem, add default include/asm-*/mutex.h files
2006-01-09 15:59:19 -08:00
mvme16xhw.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mvme147hw.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
namei.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
nubus.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
openprom.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
oplib.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
page.h
[PATCH] mm: consolidate get_order
2005-09-05 00:05:39 -07:00
page_offset.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
param.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
parport.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pci.h
[ACPI] PNPACPI vs sound IRQ
2005-07-12 00:03:30 -04:00
percpu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pgalloc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pgtable.h
[PATCH] feature removal of io_remap_page_range()
2005-09-13 08:22:33 -07:00
poll.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
posix_types.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
processor.h
[PATCH] m68k: convert thread flags to use bit fields
2005-11-13 18:14:14 -08:00
ptrace.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
q40_master.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
q40ints.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
raw_io.h
[PATCH] m68k: basic iomem annotations
2006-01-12 09:09:02 -08:00
resource.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
rtc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sbus.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
scatterlist.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sections.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
segment.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
semaphore-helper.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
semaphore.h
[PATCH] semaphore: Remove __MUTEX_INITIALIZER()
2005-10-30 17:37:27 -08:00
sembuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
serial.h
[PATCH] Serial: Split 8250 port table (part 2)
2005-06-29 18:45:19 +01:00
setup.h
[PATCH] ppc32: fix compilation error in include/asm-m68k/setup.h
2005-04-16 15:24:27 -07:00
shm.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
shmbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
shmparam.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sigcontext.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
siginfo.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
signal.h
[PATCH] m68k: signal __user annotations
2006-01-12 09:09:02 -08:00
socket.h
[NET]: Introduce SO_{SND,RCV}BUFFORCE socket options
2005-08-29 15:31:35 -07:00
sockios.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
spinlock.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
stat.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
statfs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
string.h
[PATCH] m68k: cleanup inline mem functions
2005-09-05 00:06:19 -07:00
sun3-head.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sun3_pgalloc.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sun3_pgtable.h
[PATCH] m68k: bogus function argument types (sun3_pgtable.h)
2006-01-12 09:09:01 -08:00
sun3ints.h
[PATCH] m68k: static vs. extern in sun3ints.h
2006-01-12 09:09:01 -08:00
sun3mmu.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sun3x.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sun3xflop.h
[PATCH] m68k: NULL noise removal
2006-01-12 09:09:04 -08:00
sun3xprom.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
suspend.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
swim_iop.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
system.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
termbits.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
termios.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
thread_info.h
[PATCH] missing helper - task_stack_page()
2006-01-12 09:08:50 -08:00
timex.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
tlb.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
tlbflush.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
topology.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
traps.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
types.h
[PATCH] sab: consolidate kmem_bufctl_t
2005-09-05 00:05:48 -07:00
uaccess.h
[PATCH] m68k: cast in strnlen switched to unsigned long
2006-01-12 09:09:04 -08:00
ucontext.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
unaligned.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
unistd.h
[PATCH] unify sys_ptrace prototype
2005-10-30 17:37:20 -08:00
user.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
virtconvert.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
xor.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
zorro.h
[PATCH] m68k: basic iomem annotations
2006-01-12 09:09:02 -08:00