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authorMike Rapoport <rppt@linux.vnet.ibm.com>2017-02-25 01:56:02 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-25 04:46:54 +0300
commitd811914d87576c562e849c00d9f9beff45038801 (patch)
tree7f31dbf8e5febb2396b7428d3c821792e5ce9787 /mm/madvise.c
parent0262d9c845ec349edf93f69688a5129c36cc2232 (diff)
downloadlinux-d811914d87576c562e849c00d9f9beff45038801.tar.xz
userfaultfd: non-cooperative: rename *EVENT_MADVDONTNEED to *EVENT_REMOVE
Patch series "userfaultfd: non-cooperative: add madvise() event for MADV_REMOVE request". These patches add notification of madvise(MADV_REMOVE) event to non-cooperative userfaultfd monitor. The first pacth renames EVENT_MADVDONTNEED to EVENT_REMOVE along with relevant functions and structures. Using _REMOVE instead of _MADVDONTNEED describes the event semantics more clearly and I hope it's not too late for such change in the ABI. This patch (of 3): The UFFD_EVENT_MADVDONTNEED purpose is to notify uffd monitor about removal of certain range from address space tracked by userfaultfd. Hence, UFFD_EVENT_REMOVE seems to better reflect the operation semantics. Respectively, 'madv_dn' field of uffd_msg is renamed to 'remove' and the madvise_userfault_dontneed callback is renamed to userfaultfd_remove. Link: http://lkml.kernel.org/r/1484814154-1557-2-git-send-email-rppt@linux.vnet.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Reviewed-by: Andrea Arcangeli <aarcange@redhat.com> Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/madvise.c')
-rw-r--r--mm/madvise.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/madvise.c b/mm/madvise.c
index b530a4986035..ab5ef141cc9b 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -479,7 +479,7 @@ static long madvise_dontneed(struct vm_area_struct *vma,
if (!can_madv_dontneed_vma(vma))
return -EINVAL;
- madvise_userfault_dontneed(vma, prev, start, end);
+ userfaultfd_remove(vma, prev, start, end);
zap_page_range(vma, start, end - start);
return 0;
}