diff options
| author | Andrea Arcangeli <[email protected]> | 2017-02-22 15:42:46 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2017-02-22 16:41:28 -0800 |
| commit | 09fa5296a40d01e014b4851def20b975feb98fd5 (patch) | |
| tree | 4b937777549f85e69134d5a1af48b849f174ddb0 /tools/perf/scripts/python | |
| parent | 0594f58dbd954f7747553c041d7cbbf9b6ef1947 (diff) | |
userfaultfd: non-cooperative: wake userfaults after UFFDIO_UNREGISTER
Userfaults may still happen after the userfaultfd monitor thread
received a UFFD_EVENT_MADVDONTNEED until UFFDIO_UNREGISTER is run.
Wake any pending userfault within UFFDIO_UNREGISTER protected by the
mmap_sem for writing, so they will not be reported to userland leading
to UFFDIO_COPY returning -EINVAL (as the range was already unregistered)
and they will not hang permanently either.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Andrea Arcangeli <[email protected]>
Cc: "Dr. David Alan Gilbert" <[email protected]>
Cc: Hillf Danton <[email protected]>
Cc: Michael Rapoport <[email protected]>
Cc: Mike Kravetz <[email protected]>
Cc: Mike Rapoport <[email protected]>
Cc: Pavel Emelyanov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions