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SubjectRe: [PATCH net] vsock/virtio: fix "comparison of distinct pointer types lacks a cast" warning
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Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Wed, 6 Dec 2023 17:41:43 +0100 you wrote:
> After backporting commit 581512a6dc93 ("vsock/virtio: MSG_ZEROCOPY
> flag support") in CentOS Stream 9, CI reported the following error:
>
> In file included from ./include/linux/kernel.h:17,
> from ./include/linux/list.h:9,
> from ./include/linux/preempt.h:11,
> from ./include/linux/spinlock.h:56,
> from net/vmw_vsock/virtio_transport_common.c:9:
> net/vmw_vsock/virtio_transport_common.c: In function ‘virtio_transport_can_zcopy‘:
> ./include/linux/minmax.h:20:35: error: comparison of distinct pointer types lacks a cast [-Werror]
> 20 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
> | ^~
> ./include/linux/minmax.h:26:18: note: in expansion of macro ‘__typecheck‘
> 26 | (__typecheck(x, y) && __no_side_effects(x, y))
> | ^~~~~~~~~~~
> ./include/linux/minmax.h:36:31: note: in expansion of macro ‘__safe_cmp‘
> 36 | __builtin_choose_expr(__safe_cmp(x, y), \
> | ^~~~~~~~~~
> ./include/linux/minmax.h:45:25: note: in expansion of macro ‘__careful_cmp‘
> 45 | #define min(x, y) __careful_cmp(x, y, <)
> | ^~~~~~~~~~~~~
> net/vmw_vsock/virtio_transport_common.c:63:37: note: in expansion of macro ‘min‘
> 63 | int pages_to_send = min(pages_in_iov, MAX_SKB_FRAGS);
>
> [...]

Here is the summary with links:
- [net] vsock/virtio: fix "comparison of distinct pointer types lacks a cast" warning
https://git.kernel.org/netdev/net/c/b0a930e8d90c

You are awesome, thank you!
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