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| author | Mike Rapoport <rppt@linux.vnet.ibm.com> | 2017-07-10 15:49:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-10 16:32:32 -0700 |
| commit | 230ca982ba69ae63294017a3800800ad79d5f003 (patch) | |
| tree | fdcf1f80a9dfda7e60c865095db948b5aa234113 /mm/oom_kill.c | |
| parent | 76b6f9b7edccdfcc7ad1588f24ba01e19db725f3 (diff) | |
| download | linux-230ca982ba69ae63294017a3800800ad79d5f003.tar.bz2 | |
userfaultfd: non-cooperative: add madvise() event for MADV_FREE request
MADV_FREE is identical to MADV_DONTNEED from the point of view of uffd
monitor. The monitor has to stop handling #PF events in the range being
freed. We are reusing userfaultfd_remove callback along with the logic
required to re-get and re-validate the VMA which may change or disappear
because userfaultfd_remove releases mmap_sem.
Link: http://lkml.kernel.org/r/1497876311-18615-1-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.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>
Diffstat (limited to 'mm/oom_kill.c')
0 files changed, 0 insertions, 0 deletions