mntinfo of process

[Nilesh Chate]

Hi,
Considering the the output of
#cat /proc/pid/mountinfo

I have this line for one of my process
39 38 0:10 /1 /dev/console rw,relatime shared:7 - devpts devpts
rw,mode=600,ptmxmode=000

Here,
/1 is root: root of the mount within the filesystem.(man 5 proc)

What is this /1?

Thanks.
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