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From 0258872e2b45b589481e6796aa983f8749be9ada Mon Sep 17 00:00:00 2001
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From: Karel Zak <kzak@redhat.com>
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Date: Thu, 10 Aug 2017 12:37:34 +0200
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Subject: [PATCH 157/173] losetup: add info about lazy detach to manpage
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Upstream: http://github.com/karelzak/util-linux/commit/60eedb0a53f14aa1169713a72325421db8e1c647
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Addresses: http://bugzilla.redhat.com/show_bug.cgi?id=1566390
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Signed-off-by: Karel Zak <kzak@redhat.com>
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---
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 sys-utils/losetup.8 | 5 ++++-
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 1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/sys-utils/losetup.8 b/sys-utils/losetup.8
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index 9a8c1d597..45c220187 100644
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--- a/sys-utils/losetup.8
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+++ b/sys-utils/losetup.8
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@@ -80,7 +80,10 @@ without --list) is deprecated.
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 .IP "\fB\-c, \-\-set-capacity\fP \fIloopdev\fP
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 force loop driver to reread size of the file associated with the specified loop device
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 .IP "\fB\-d, \-\-detach\fP \fIloopdev\fP..."
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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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 .IP "\fB\-D, \-\-detach-all\fP"
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 detach all associated loop devices
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 .IP "\fB\-f, \-\-find\fP"
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-- 
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2.14.4
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