On Mon, Feb 10, 2020 at 7:06 AM Alexey Gladkov [off-list ref] wrote:

This is a preparation patch that moves /proc/{self|thread-self} dentries
to be stored inside procfs fs_info struct instead of making them per pid
namespace. Since we want to support multiple procfs instances we need to
make sure that these dentries are also per-superblock instead of
per-pidns,

The changelog makes perfect sense so far...

unmounting a private procfs won't clash with other procfs
mounts.

This doesn't parse as part of the previous sentence.  I'm also not
convinced that this really involves unmounting per se.  Maybe just
delete these words.