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| author | Andrea Arcangeli <aarcange@redhat.com> | 2015-09-04 15:46:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-04 16:54:41 -0700 |
| commit | 19a809afe2fe089317226bbe5c5a1ce7f53dcdca (patch) | |
| tree | 578abd63bf6a68dce4d7e20be1641e0111890914 /mm/mempolicy.c | |
| parent | 6b251fc96cf2cdf1ce4b5db055547e2a5679bc77 (diff) | |
| download | lwn-19a809afe2fe089317226bbe5c5a1ce7f53dcdca.tar.gz lwn-19a809afe2fe089317226bbe5c5a1ce7f53dcdca.zip | |
userfaultfd: teach vma_merge to merge across vma->vm_userfaultfd_ctx
vma->vm_userfaultfd_ctx is yet another vma parameter that vma_merge
must be aware about so that we can merge vmas back like they were
originally before arming the userfaultfd on some memory range.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Cc: Sanidhya Kashyap <sanidhya.gatech@gmail.com>
Cc: zhang.zhanghailiang@huawei.com
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Andres Lagar-Cavilla <andreslc@google.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Hugh Dickins <hughd@google.com>
Cc: Peter Feiner <pfeiner@google.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Huangpeng (Peter)" <peter.huangpeng@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mempolicy.c')
| -rw-r--r-- | mm/mempolicy.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 99d4c1d0b858..a7f1e0d1d6b8 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -722,8 +722,8 @@ static int mbind_range(struct mm_struct *mm, unsigned long start, pgoff = vma->vm_pgoff + ((vmstart - vma->vm_start) >> PAGE_SHIFT); prev = vma_merge(mm, prev, vmstart, vmend, vma->vm_flags, - vma->anon_vma, vma->vm_file, pgoff, - new_pol); + vma->anon_vma, vma->vm_file, pgoff, + new_pol, vma->vm_userfaultfd_ctx); if (prev) { vma = prev; next = vma->vm_next; |