*mount* [*-l*] [*-t* _fstype_]
-*mount* *-a* [*-fFnrsvw*] [*-t* _fstype_] [*-O* _optlist_]
+*mount* *-a* [*-F*] [*-fnrsvw*] [*-t* _fstype_] [*-O* _optlist_]
*mount* [*-fnrsvw*] [*-o* _options_] _device_|_mountpoint_
-*mount* [*-fnrsvw*] [*-t* _fstype_] [*-o* _options_] _device mountpoint_
+*mount* [*-fnrsvw*] [*-o* _options_] [*-t* _fstype_] _device mountpoint_
*mount* *--bind*|*--rbind*|*--move* _olddir newdir_
-*mount* *--make-*[*shared*|*slave*|*private*|*unbindable*|*rshared*|*rslave*|*rprivate*|*runbindable*] _mountpoint_
+*mount* *--make-*[*r*]{*shared*|*slave*|*private*|*unbindable*} _mountpoint_
+
== DESCRIPTION
*X-mount.noloop*::
Do not create and mount a loop device, even if the source of the mount is a regular file.
-*X-mount.subdir=*__directory__::
-Allow mounting sub-directory from a filesystem instead of the root directory. For now, this feature is implemented by temporary filesystem root directory mount in unshared namespace and then bind the sub-directory to the final mount point and umount the root of the filesystem. The sub-directory mount shows up atomically for the rest of the system although it is implemented by multiple *mount*(2) syscalls.
+**X-mount.subdir=**_directory_::
+Allow mounting a sub-directory of a filesystem instead of the root directory. For now, this feature is implemented by a temporary filesystem root-directory mount in an unshared namespace and then binding the sub-directory to the final mount point and unmounting the root of the filesystem. The sub-directory mount shows up atomically for the rest of the system although it is implemented by multiple *mount*(2) syscalls.
+
Note that this feature will not work in session with an unshared private mount namespace (after *unshare --mount*) on old kernels or with *mount*(8) without support for file-descriptors-based mount kernel API. In this case, you need *unshare --mount --propagation shared*.
+
*panic*;;
If an error is encountered, cause a kernel panic.
-[**lock**|**umount**|*repair*];;
+**lock**|**umount**|*repair*;;
These mount options don't do anything at present; when an error is encountered only a console message is printed.
=== Mount options for umsdos
**verity.roothashsig=**__path__::
Path to *pkcs7*(1ssl) signature of root hash hex string. Requires crypt_activate_by_signed_key() from cryptsetup and kernel built with *CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG*. For device reuse, signatures have to be either used by all mounts of a device or by none. Optional.
-**verity.oncorruption=**__ignore__|__restart__|__panic__::
+**verity.oncorruption=**{*ignore*|*restart*|*panic*}::
Instruct the kernel to ignore, reboot or panic when corruption is detected. By default the I/O operation simply fails. Requires Linux 4.1 or newer, and libcrypsetup 2.3.4 or newer. Optional.
+
Supported since util-linux v2.35.