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| author | Karel Zak | 2016-08-30 10:25:44 +0200 |
|---|---|---|
| committer | Karel Zak | 2016-08-30 10:25:44 +0200 |
| commit | d00eb87ba284635e72b10880dfcf409276fa41b0 (patch) | |
| tree | 7e16d7e4f1b7601201440337257651588f2119f2 /sys-utils/umount.8 | |
| parent | libblkid: Avoid OOB access on illegal ZFS superblocks (diff) | |
| download | kernel-qcow2-util-linux-d00eb87ba284635e72b10880dfcf409276fa41b0.tar.gz kernel-qcow2-util-linux-d00eb87ba284635e72b10880dfcf409276fa41b0.tar.xz kernel-qcow2-util-linux-d00eb87ba284635e72b10880dfcf409276fa41b0.zip | |
umount: fix obsolete info about loop= in umount.8
Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=1370959
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'sys-utils/umount.8')
| -rw-r--r-- | sys-utils/umount.8 | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/sys-utils/umount.8 b/sys-utils/umount.8 index ac22c879d..caef3b048 100644 --- a/sys-utils/umount.8 +++ b/sys-utils/umount.8 @@ -80,7 +80,9 @@ helpers. .TP .BR \-d , " \-\-detach\-loop" When the unmounted device was a loop device, also free this loop -device. +device. This option is unnecessary for devices initialized by +.BR mount (8), +in this case "autoclear" functionality is enabled by default. .TP .B \-\-fake Causes everything to be done except for the actual system call or umount helper @@ -156,12 +158,14 @@ Display help text and exit. .SH "LOOP DEVICE" The .B umount -command will free the loop device associated with a mount when -it finds the option \fBloop=...\fR in -.IR /etc/mtab , -or when the \fB\-d\fR option was given. Any still associated loop devices -can be freed by using \fBlosetup -d\fR; see -.BR losetup (8). +command will automatically detach loop device previously initialized by +.BR mount (8) +command independently of /etc/mtab. + +In this case the device is initialized with "autoclear" flag (see +.BR losetup (8) +output for more details), otherwise it's necessary to use the option \fB \-\-detach\-loop\fR +or call \fBlosetup -d <device>\fR. The autoclear feature is supported since Linux 2.6.25. .SH EXTERNAL HELPERS The syntax of external unmount helpers is: .PP |