diff --git a/blockdevice/stats.go b/blockdevice/stats.go
index bc6b6a17..1287b166 100644
--- a/blockdevice/stats.go
+++ b/blockdevice/stats.go
@@ -21,7 +21,8 @@ import (
 	"os"
 	"strings"
 
-	filesystem "github.com/prometheus/procfs/internal/fs"
+	"github.com/prometheus/procfs"
+	"github.com/prometheus/procfs/internal/fs"
 	"github.com/prometheus/procfs/internal/util"
 )
 
@@ -215,30 +216,30 @@ const (
 // FS represents the pseudo-filesystems proc and sys, which provides an
 // interface to kernel data structures.
 type FS struct {
-	proc *filesystem.FS
-	sys  *filesystem.FS
+	proc *fs.FS
+	sys  *fs.FS
 }
 
 // NewDefaultFS returns a new blockdevice fs using the default mountPoints for proc and sys.
 // It will error if either of these mount points can't be read.
 func NewDefaultFS() (FS, error) {
-	return NewFS(filesystem.DefaultProcMountPoint, filesystem.DefaultSysMountPoint)
+	return NewFS(fs.DefaultProcMountPoint, fs.DefaultSysMountPoint)
 }
 
 // NewFS returns a new blockdevice fs using the given mountPoints for proc and sys.
 // It will error if either of these mount points can't be read.
 func NewFS(procMountPoint string, sysMountPoint string) (FS, error) {
 	if strings.TrimSpace(procMountPoint) == "" {
-		procMountPoint = filesystem.DefaultProcMountPoint
+		procMountPoint = fs.DefaultProcMountPoint
 	}
-	procfs, err := filesystem.NewFS(procMountPoint)
+	procfs, err := fs.NewFS(procMountPoint)
 	if err != nil {
 		return FS{}, err
 	}
 	if strings.TrimSpace(sysMountPoint) == "" {
-		sysMountPoint = filesystem.DefaultSysMountPoint
+		sysMountPoint = fs.DefaultSysMountPoint
 	}
-	sysfs, err := filesystem.NewFS(sysMountPoint)
+	sysfs, err := fs.NewFS(sysMountPoint)
 	if err != nil {
 		return FS{}, err
 	}
@@ -483,5 +484,5 @@ func (fs FS) SysBlockDeviceSize(device string) (uint64, error) {
 	if err != nil {
 		return 0, err
 	}
-	return filesystem.SectorSize * size, nil
+	return procfs.SectorSize * size, nil
 }
diff --git a/btrfs/get.go b/btrfs/get.go
index ac9c205c..4fce6212 100644
--- a/btrfs/get.go
+++ b/btrfs/get.go
@@ -22,6 +22,7 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/prometheus/procfs"
 	"github.com/prometheus/procfs/internal/fs"
 	"github.com/prometheus/procfs/internal/util"
 )
@@ -208,7 +209,7 @@ func (r *reader) readDeviceInfo(d string) map[string]*Device {
 	info := make(map[string]*Device, len(devs))
 	for _, n := range devs {
 		info[n] = &Device{
-			Size: fs.SectorSize * r.readValue("devices/"+n+"/size"),
+			Size: procfs.SectorSize * r.readValue("devices/"+n+"/size"),
 		}
 	}
 
diff --git a/fs.go b/fs.go
index 4980c875..9bdaccc7 100644
--- a/fs.go
+++ b/fs.go
@@ -24,8 +24,14 @@ type FS struct {
 	isReal bool
 }
 
-// DefaultMountPoint is the common mount point of the proc filesystem.
-const DefaultMountPoint = fs.DefaultProcMountPoint
+const (
+	// DefaultMountPoint is the common mount point of the proc filesystem.
+	DefaultMountPoint = fs.DefaultProcMountPoint
+
+	// SectorSize represents the size of a sector in bytes.
+	// It is specific to Linux block I/O operations.
+	SectorSize = 512
+)
 
 // NewDefaultFS returns a new proc FS mounted under the default proc mountPoint.
 // It will error if the mount point directory can't be read or is a file.
diff --git a/internal/fs/fs.go b/internal/fs/fs.go
index a98c700f..3a43e839 100644
--- a/internal/fs/fs.go
+++ b/internal/fs/fs.go
@@ -31,10 +31,6 @@ const (
 
 	// DefaultSelinuxMountPoint is the common mount point of the selinuxfs.
 	DefaultSelinuxMountPoint = "/sys/fs/selinux"
-
-	// SectorSize represents the size of a sector in bytes.
-	// It is specific to Linux block I/O operations.
-	SectorSize = 512
 )
 
 // FS represents a pseudo-filesystem, normally /proc or /sys, which provides an