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Subject[PATCH 09/10] uml: comment about cast build fix
From: Paolo 'Blaisorblade' Giarrusso <>

Explain why the casting we do to silence this warning is indeed safe.

It is because the field we're casting from, though being 64-bit wide, was filled
with a pointer in first place by ourselves.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <>
arch/um/os-Linux/aio.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/um/os-Linux/aio.c b/arch/um/os-Linux/aio.c
--- a/arch/um/os-Linux/aio.c
+++ b/arch/um/os-Linux/aio.c
@@ -144,6 +144,7 @@ static int aio_thread(void *arg)
"errno = %d\n", errno);
else {
+ /* This is safe as we've just a pointer here. */
aio = (struct aio_context *) (long);
if(update_aio(aio, event.res)){
do_aio(ctx, aio);
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