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ioctl_userfaultfd.2: Minor fixes to Mike Rapoport's patch 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2017-04-27 19:24:14 +02:00
parent 66487517a0
commit 42630fa9ae
1 changed files with 15 additions and 17 deletions
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32
man2/ioctl_userfaultfd.2
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@ -140,41 +140,39 @@ When this feature is enabled,
the userfaultfd objects associated with a parent process are duplicated
into the child process during
.BR fork (2)
system call and the
.I UFFD_EVENT_FORK
is delivered to the userfaultfd monitor
and a
.B UFFD_EVENT_FORK
ievent is delivered to the userfaultfd monitor
.TP
.B UFFD_FEATURE_EVENT_REMAP
If this feature is enabled,
when the faulting process invokes
.BR mremap (2)
system call
.BR mremap (2),
the userfaultfd monitor will receive an event of type
.I UFFD_EVENT_REMAP.
.BR UFFD_EVENT_REMAP .
.TP
.B UFFD_FEATURE_EVENT_REMOVE
If this feature is enabled,
when the faulting process calls
.BR madvise(2)
system call with
.I MADV_DONTNEED
.BR madvise (2)
with the
.B MADV_DONTNEED
or
.I MADV_REMOVE
advice to free a virtual memory area
.B MADV_REMOVE
advice value to free a virtual memory area
the userfaultfd monitor will receive an event of type
.I UFFD_EVENT_REMOVE.
.BR UFFD_EVENT_REMOVE .
.TP
.B UFFD_FEATURE_EVENT_UNMAP
If this feature is enabled,
when the faulting process unmaps virtual memory either explicitly with
.BR munmap (2)
system call, or implicitly either during
.BR munmap (2),
or implicitly during either
.BR mmap (2)
or
.BR mremap (2)
system call,
.BR mremap (2).
the userfaultfd monitor will receive an event of type
.I UFFD_EVENT_UNMAP
.BR UFFD_EVENT_UNMAP .
.TP
.B UFFD_FEATURE_MISSING_HUGETLBFS
If this feature bit is set,