diff options
| author | Andrea Arcangeli <aarcange@redhat.com> | 2019-11-30 17:57:58 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-01 12:59:10 -0800 |
| commit | 9d4678eb170c4c632174d1fec8ecee31c2f314f9 (patch) | |
| tree | 42c77ee3dd514f345e0cf52b1d5cebe0697a4ed6 /fs/super.c | |
| parent | 643aa36eadebdcdcaeecf538f0549a619ad78ea0 (diff) | |
| download | lwn-9d4678eb170c4c632174d1fec8ecee31c2f314f9.tar.gz lwn-9d4678eb170c4c632174d1fec8ecee31c2f314f9.zip | |
fs/userfaultfd.c: wp: clear VM_UFFD_MISSING or VM_UFFD_WP during userfaultfd_register()
If the registration is repeated without VM_UFFD_MISSING or VM_UFFD_WP they
need to be cleared. Currently setting UFFDIO_REGISTER_MODE_WP returns
-EINVAL, so this patch is a noop until the UFFDIO_REGISTER_MODE_WP support
is applied.
Link: http://lkml.kernel.org/r/20191004232834.GP13922@redhat.com
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reported-by: Wei Yang <richardw.yang@linux.intel.com>
Reviewed-by: Wei Yang <richardw.yang@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/super.c')
0 files changed, 0 insertions, 0 deletions