losetup: add info about lazy detach to manpage
Signed-off-by: Karel Zak <kzak@redhat.com>
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@ -87,7 +87,10 @@ for non-root users. See also \fB\-\-list\fR. The old output format (as printed
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without \fB--list)\fR is deprecated.
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.TP
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.BR \-d , " \-\-detach " \fIloopdev\fR...
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Detach the file or device associated with the specified loop device(s).
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Detach the file or device associated with the specified loop device(s). Note
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that since Linux v3.7 kernel uses "lazy device destruction". The detach
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operation does not return EBUSY error anymore if device is actively used by
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system, but it is marked by autoclear flag and destroyed later.
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.TP
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.BR \-D , " \-\-detach\-all"
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Detach all associated loop devices.
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