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[PATCH] uml: comment about cast build fix
author
Paolo 'Blaisorblade' Giarrusso
<blaisorblade@yahoo.it>
Wed, 21 Sep 2005 16:40:29 +0000
(18:40 +0200)
committer
Linus Torvalds
<torvalds@g5.osdl.org>
Wed, 21 Sep 2005 23:16:30 +0000
(16:16 -0700)
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 <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
arch/um/os-Linux/aio.c
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diff --git
a/arch/um/os-Linux/aio.c
b/arch/um/os-Linux/aio.c
index 298d5632128b8119d06f90c1639a559b0168d20e..f6e64026f9952b90d1af98625b152ef394c454e9 100644
(file)
--- 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);