It was harmless, but 32bit kernel builds would emit warnings if not
passing through an (unsigned long) cast of the pointer, before storing
it in a __u64.
Warning found by the kbuild test robot.
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
---
fs/userfaultfd.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index 09e8d5b..6fe0efd 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -545,7 +545,7 @@ static int dup_fctx(struct userfaultfd_fork_ctx *fctx)
msg_init(&ewq.msg);
ewq.msg.event = UFFD_EVENT_FORK;
- ewq.msg.arg.reserved.reserved1 = (__u64)fctx->new;
+ ewq.msg.arg.reserved.reserved1 = (unsigned long)fctx->new;
return userfaultfd_event_wait_completion(ctx, &ewq);
}
@@ -799,7 +799,9 @@ static ssize_t userfaultfd_ctx_read(struct userfaultfd_ctx *ctx, int no_wait,
*msg = uwq->msg;
if (uwq->msg.event == UFFD_EVENT_FORK) {
- fork_nctx = (struct userfaultfd_ctx *)uwq->msg.arg.reserved.reserved1;
+ fork_nctx = (struct userfaultfd_ctx *)
+ (unsigned long)
+ uwq->msg.arg.reserved.reserved1;
list_move(&uwq->wq.task_list, &fork_event);
spin_unlock(&ctx->event_wqh.lock);
ret = 0;
--
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