[$] Trust in and maintenance of filesystems

The Linux kernel supports a wide variety of filesystems, many of which are
no longer in heavy use — or, perhaps, any use at all. The kernel code
implementing the less-popular filesystems tends to be relatively unpopular
as well, receiving little in the way of maintenance. Keeping old
filesystems alive does place a burden on kernel developers, though, so it
is not surprising that there is pressure to remove the least popular ones.
At the 2023 Kernel Maintainers Summit, the developers talked about these
filesystems and what can be done about them.