From: Paolo 'Blaisorblade' Giarrusso Date: Wed, 21 Sep 2005 16:40:29 +0000 (+0200) Subject: [PATCH] uml: comment about cast build fix X-Git-Tag: v2.6.14-rc3~119 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=a46c9047642d70f5619e4a14129d74dd1f6ea74f;p=linux-2.6-omap-h63xx.git [PATCH] uml: comment about cast build fix 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 Signed-off-by: Linus Torvalds --- diff --git a/arch/um/os-Linux/aio.c b/arch/um/os-Linux/aio.c index 298d5632128..f6e64026f99 100644 --- 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) event.data; if(update_aio(aio, event.res)){ do_aio(ctx, aio);