linux_dsm_epyc7002/arch
Mike Rapoport 897ab3e0c4 userfaultfd: non-cooperative: add event for memory unmaps
When a non-cooperative userfaultfd monitor copies pages in the
background, it may encounter regions that were already unmapped.
Addition of UFFD_EVENT_UNMAP allows the uffd monitor to track precisely
changes in the virtual memory layout.

Since there might be different uffd contexts for the affected VMAs, we
first should create a temporary representation for the unmap event for
each uffd context and then notify them one by one to the appropriate
userfault file descriptors.

The event notification occurs after the mmap_sem has been released.

[arnd@arndb.de: fix nommu build]
  Link: http://lkml.kernel.org/r/20170203165141.3665284-1-arnd@arndb.de
[mhocko@suse.com: fix nommu build]
  Link: http://lkml.kernel.org/r/20170202091503.GA22823@dhcp22.suse.cz
Link: http://lkml.kernel.org/r/1485542673-24387-3-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-24 17:46:55 -08:00
..
alpha Final extable.h related changes. 2017-02-21 14:28:55 -08:00
arc ARC updates for 4.11 rc1 2017-02-22 10:33:53 -08:00
arm ARM: SoC driver updates 2017-02-23 15:57:04 -08:00
arm64 ARM: 64-bit DT updates for v4.11 2017-02-23 15:52:14 -08:00
avr32 sched/cputime: Remove generic asm headers 2017-02-01 09:14:07 +01:00
blackfin Less anger inducing pull request for 4.11 2017-02-23 18:58:18 -08:00
c6x sched/cputime: Remove generic asm headers 2017-02-01 09:14:07 +01:00
cris cris: use generic current.h 2017-02-24 17:46:53 -08:00
frv Final extable.h related changes. 2017-02-21 14:28:55 -08:00
h8300 sched/cputime: Remove generic asm headers 2017-02-01 09:14:07 +01:00
hexagon Final extable.h related changes. 2017-02-21 14:28:55 -08:00
ia64 arch, mm: remove arch specific show_mem 2017-02-22 16:41:30 -08:00
m32r m32r: fix build warning 2017-02-22 16:41:27 -08:00
m68k powerpc updates for 4.11 part 1. 2017-02-22 10:30:38 -08:00
metag Final extable.h related changes. 2017-02-21 14:28:55 -08:00
microblaze Final extable.h related changes. 2017-02-21 14:28:55 -08:00
mips userfaultfd: non-cooperative: add event for memory unmaps 2017-02-24 17:46:55 -08:00
mn10300 Final extable.h related changes. 2017-02-21 14:28:55 -08:00
nios2 Final extable.h related changes. 2017-02-21 14:28:55 -08:00
openrisc Final extable.h related changes. 2017-02-21 14:28:55 -08:00
parisc arch, mm: remove arch specific show_mem 2017-02-22 16:41:30 -08:00
powerpc mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf 2017-02-24 17:46:54 -08:00
s390 memblock: embed memblock type name within struct memblock_type 2017-02-24 17:46:54 -08:00
score score: remove asm/current.h 2017-02-22 16:41:27 -08:00
sh TTY/Serial driver patches for 4.11-rc1 2017-02-22 12:17:25 -08:00
sparc lib/show_mem.c: teach show_mem to work with the given nodemask 2017-02-22 16:41:30 -08:00
tile userfaultfd: non-cooperative: add event for memory unmaps 2017-02-24 17:46:55 -08:00
um Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-02-20 13:23:30 -08:00
unicore32 arch, mm: remove arch specific show_mem 2017-02-22 16:41:30 -08:00
x86 userfaultfd: non-cooperative: add event for memory unmaps 2017-02-24 17:46:55 -08:00
xtensa Final extable.h related changes. 2017-02-21 14:28:55 -08:00
.gitignore
Kconfig mm, x86: add support for PUD-sized transparent hugepages 2017-02-24 17:46:54 -08:00