Question about inode_permission() check in unix_find_other()

Hi Networking Subsystem Maintainers,

I have a quick question about inode_permission() check in unix_find_other(),

I was doing a code review on net/unix/af_unix.c and found out that the inode_permission() check is confusing here.

Since the unix socket is presented as a file, and will be permission checked by VFS when user open it,
why do we still need the inode_permission() check in unix_find_other() anyway?

Thank you,
- Tong