---
name: "proc_pid_mountstats"
section: "5"
platform: "linux"
package: "man-pages"
version: "6.19-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/proc_pid_mountstats"
---

# proc\_pid\_mountstats(5)

mount statistics

## NAME

/proc/pid/mountstats - mount statistics

## DESCRIPTION

- */proc/*pid*/mountstats* (since Linux 2.6.17)

  This file exports information (statistics, configuration information) about the mounts in the process's mount namespace (see [**mount\_namespaces**(7)](/mount_namespaces/7.md)). Lines in this file have the form:

-

  ```
  device /dev/sda7 mounted on /home with fstype ext3 [stats]
  (       1      )            ( 2 )             (3 ) (  4  )
  ```

-

  The fields in each line are:

  - (1)

    The name of the mounted device (or "nodevice" if there is no corresponding device).

  - (2)

    The mount point within the filesystem tree.

  - (3)

    The filesystem type.

  - (4)

    Optional statistics and configuration information. Currently (as at Linux 2.6.26), only NFS filesystems export information via this field.

-

  This file is readable only by the owner of the process.

## SEE ALSO

[**proc**(5)](/proc/5.md)