see
.BR proc (5)
for more details.
-If you need a currently unsupported filesystem, insert the corresponding
-module or recompile the kernel.
There is also a legacy
.BR sysfs (2)
-system call (availability of which is controlled by the
+system call (whose availability is controlled by the
.\" commit: 6af9f7bf3c399e0ab1eee048e13572c6d4e15fe9
.B CONFIG_SYSFS_SYSCALL
kernel build configuration option since Linux 3.15)
-that enables enumeration of currently available filesystem types regardless of
+that enables enumeration of the currently available filesystem types
+regardless of
.I /proc
availability and/or sanity.
.PP
+If you need a currently unsupported filesystem, insert the corresponding
+module or recompile the kernel.
+.PP
In order to use a filesystem, you have to
.I mount
it; see