From: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx> Subject: userfaultfd: non-cooperative: dup_userfaultfd: use mm_count instead of mm_users Since commit d2005e3f41d4 (userfaultfd: don't pin the user memory in userfaultfd_file_create()) userfaultfd uses mm_count rather than mm_users to pin mm_struct. Make dup_userfaultfd consistent with this behaviour Link: http://lkml.kernel.org/r/20161216144821.5183-11-aarcange@xxxxxxxxxx Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx> Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx> Cc: "Dr. David Alan Gilbert" <dgilbert@xxxxxxxxxx> Cc: Hillf Danton <hillf.zj@xxxxxxxxxxxxxxx> Cc: Michael Rapoport <RAPOPORT@xxxxxxxxxx> Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx> Cc: Pavel Emelyanov <xemul@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/userfaultfd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN fs/userfaultfd.c~userfaultfd-non-cooperative-dup_userfaultfd-use-mm_count-instead-of-mm_users fs/userfaultfd.c --- a/fs/userfaultfd.c~userfaultfd-non-cooperative-dup_userfaultfd-use-mm_count-instead-of-mm_users +++ a/fs/userfaultfd.c @@ -558,7 +558,7 @@ int dup_userfaultfd(struct vm_area_struc ctx->features = octx->features; ctx->released = false; ctx->mm = vma->vm_mm; - atomic_inc(&ctx->mm->mm_users); + atomic_inc(&ctx->mm->mm_count); userfaultfd_ctx_get(octx); fctx->orig = octx; _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
