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
..
sn
[IA64-SGI] Shub2 BTE address fix
2006-02-06 09:28:10 -08:00
a.out.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
acpi-ext.h
[ACPI] fix IA64 build warning
2005-08-04 22:29:34 -04:00
acpi.h
[IA64] Add ACPI based P-state support
2005-08-26 15:09:24 -07:00
agp.h
[PATCH] AGP fix for Xen VMM
2005-06-07 12:35:43 -07:00
asmmacro.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
break.h
[PATCH] Kprobes/IA64: kdebug die notification mechanism
2005-06-23 09:45:22 -07:00
bug.h
[PATCH] remove gcc-2 checks
2006-01-08 20:14:02 -08:00
bugs.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
cacheflush.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
checksum.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
compat.h
[PATCH] ia64: task_pt_regs()
2006-01-12 09:08:58 -08:00
cpu.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
cyclone.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
delay.h
[IA64] disable preemption in udelay()
2005-12-16 10:00:24 -08:00
div64.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
dma-mapping.h
[PATCH] ia64: re-implement dma_get_cache_alignment to avoid EXPORT_SYMBOL
2005-11-07 07:53:23 -08:00
dma.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
elf.h
[PATCH] auxiliary vector cleanups
2005-09-07 16:57:21 -07:00
emergency-restart.h
[PATCH] Add emergency_restart()
2005-07-26 14:35:41 -07:00
errno.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
fcntl.h
[PATCH] Clean up struct flock definitions
2005-09-07 16:57:38 -07:00
fpswa.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
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
gcc_intrin.h
[IA64] fix fls()
2005-04-21 11:07:59 -07:00
hardirq.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
hw_irq.h
[PATCH] x86/x86_64: deferred handling of writes to /proc/irqxx/smp_affinity
2005-09-07 16:57:15 -07:00
ia32.h
[IA64] Change SET_PERSONALITY to comply with comment in binfmt_elf.c.
2005-12-06 09:12:34 -08:00
ia64regs.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ide.h
[PATCH] ia64: drop arch-specific IDE MAX_HWIFS definition
2006-02-03 08:32:11 -08:00
intel_intrin.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
intrinsics.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
io.h
[PATCH] /dev/mem: validate mmap requests
2006-01-08 20:14:02 -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
iosapic.h
[IA64] Minor cleanups - remove unnecessary function prototype in iosapic.h
2005-09-07 14:00:40 -07:00
ipcbuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
irq.h
[IA64] Manual merge fix for 3 files
2005-09-08 14:27:13 -07:00
kdebug.h
[IA64] Extend notify_die() hooks for IA64
2005-11-07 11:27:13 -08:00
kmap_types.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
kprobes.h
[IA64] prevent accidental modification of args in jprobe handler
2006-01-13 14:45:21 -08:00
kregs.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
[IA64] Fix missing parameter for local_add/sub
2005-12-07 11:30:11 -08:00
machvec.h
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
2005-10-28 21:09:26 -07:00
machvec_dig.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
machvec_hpsim.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
machvec_hpzx1.h
[IA64] more robust zx1/sx1000 machvec support
2005-09-14 16:22:11 -07:00
machvec_hpzx1_swiotlb.h
[IA64] more robust zx1/sx1000 machvec support
2005-09-14 16:22:11 -07:00
machvec_init.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
machvec_sn2.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
mca.h
[IA64] Wire in the MCA/INIT handler stacks
2005-09-22 13:24:19 -07:00
mca_asm.h
[PATCH] MCA/INIT: use per cpu stacks
2005-09-11 14:08:41 -07:00
meminit.h
Pull sparsemem-v5 into release branch
2005-10-28 14:32:56 -07:00
mman.h
[PATCH] madvise MADV_DONTFORK/MADV_DOFORK
2006-02-14 16:09:34 -08:00
mmu.h
[IA64] Fix race in mm-context wrap-around logic.
2005-08-12 15:05:21 -07:00
mmu_context.h
[IA64] make mmu_context.h and tlb.c 80-column friendly
2005-11-03 14:43:50 -08:00
mmzone.h
[PATCH] V5 ia64 SPARSEMEM - conditional changes for SPARSEMEM
2005-10-04 13:21:13 -07:00
module.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
msi.h
[PATCH] PCI: Change MSI to use physical delivery mode always
2005-11-10 16:09:18 -08:00
mutex.h
[PATCH] mutex subsystem, add default include/asm-*/mutex.h files
2006-01-09 15:59:19 -08:00
namei.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
nodedata.h
[PATCH] V5 ia64 SPARSEMEM - conditional changes for SPARSEMEM
2005-10-04 13:21:13 -07:00
numa.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
numnodes.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
page.h
[IA64] - Make pfn_valid more precise for SGI Altix systems
2005-11-29 09:24:10 -08:00
pal.h
[IA64] pal cache flush patch
2006-01-16 15:44:53 -08:00
param.h
[PATCH] ia64: Selectable Timer Interrupt Frequency
2005-06-23 09:45:10 -07:00
parport.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
patch.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pci.h
[PATCH] Make sparc64 use setup-res.c
2005-09-08 14:57:25 -07:00
percpu.h
[PATCH] adjust per_cpu definition in non-SMP case
2005-06-23 09:45:28 -07:00
perfmon.h
[IA64] alternate perfmon handler
2005-05-18 16:14:30 -07:00
perfmon_default_smpl.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pgalloc.h
[IA64] 4-level page tables
2005-11-11 09:37:29 -08:00
pgtable.h
[IA64] 4-level page tables
2005-11-11 09:37:29 -08:00
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
[IA64] avoid broken SAL_CACHE_FLUSH implementations
2006-02-02 13:25:54 -08:00
ptrace.h
[PATCH] ia64: task_pt_regs()
2006-01-12 09:08:58 -08:00
ptrace_offsets.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
resource.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
rse.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
rwsem.h
[PATCH] add sem_is_read/write_locked()
2005-10-29 21:40:35 -07:00
sal.h
[IA64] avoid broken SAL_CACHE_FLUSH implementations
2006-02-02 13:25:54 -08:00
scatterlist.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sections.h
[PATCH] kprobes/ia64: refuse kprobe on ivt code
2005-06-27 15:23:54 -07:00
segment.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
semaphore.h
[IA64] Fix bug in ia64 specific down() function
2006-01-17 14:04:00 -08:00
sembuf.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
serial.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
setup.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
[PATCH] consolidate SIGEV_PAD_SIZE
2005-05-01 08:59:08 -07:00
signal.h
[PATCH] asm/signal.h unification
2005-05-04 07:33:15 -07:00
smp.h
[PATCH] smp_processor_id() cleanup
2005-06-21 18:46:13 -07:00
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
sparsemem.h
[PATCH] V5 ia64 SPARSEMEM - conditional changes for SPARSEMEM
2005-10-04 13:21:13 -07:00
spinlock.h
[PATCH] remove gcc-2 checks
2006-01-08 20:14:02 -08:00
spinlock_types.h
[PATCH] spinlock consolidation
2005-09-10 10:06:21 -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
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
system.h
[IA64] remove staled comments in asm/system.h
2006-02-02 13:20:42 -08:00
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
[IA64] Handle debug traps in fsys mode
2006-01-13 14:16:08 -08:00
timex.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
tlb.h
[PATCH] mm: tlb_finish_mmu forget rss
2005-10-29 21:40:37 -07:00
tlbflush.h
[IA64] Use bitmaps for efficient context allocation/free
2005-10-31 14:36:05 -08:00
topology.h
[PATCH] Export cpu topology in sysfs
2006-02-03 08:32:09 -08:00
types.h
[PATCH] sab: consolidate kmem_bufctl_t
2005-09-05 00:05:48 -07:00
uaccess.h
[PATCH] ia64 basic __user annotations
2005-09-29 08:46:27 -07:00
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
uncached.h
[PATCH] ia64 uncached alloc
2005-06-21 18:46:18 -07:00
unistd.h
[IA64] unshare system call registration for ia64
2006-02-08 15:43:38 -08:00
unwind.h
[IA64] MCA/INIT: remove obsolete unwind code
2005-09-11 14:09:34 -07:00
user.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
ustack.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
vga.h
[IA64-SGI] pcdp: add PCDP pci interface support
2005-06-28 09:09:06 -07:00
xor.h
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00