File util-linux-loop-reuse-17.patch of Package util-linux-systemd.4767

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File util-linux-loop-reuse-17.patch of Package util-linux-systemd.4767

From f27d989c67eb0d85b3bfc54807e626ff16e71f56 Mon Sep 17 00:00:00 2001
From: Stanislav Brabec <sbrabec@suse.cz>
Date: Wed, 17 Aug 2016 12:54:40 +0200
Subject: [PATCH 17/20] losetup: Prevent AUTOCLEAR detach race

Kernel needs some time to delete a device after losetup --detach. If
the losetup --find --nooverlay is called just after losetup --delete,
it can sometimes attempt to recycle the device that is just being
released.  To prevent this race, clear the AUTOCLEAR flag of the
device.

[kzak@redhat.com: - rebase to the new version of the code]

Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>
Signed-off-by: Karel Zak <kzak@redhat.com>
---
 sys-utils/losetup.c | 6 ++++++
 1 file changed, 6 insertions(+)

Index: util-linux-2.25/sys-utils/losetup.c
===================================================================
--- util-linux-2.25.orig/sys-utils/losetup.c
+++ util-linux-2.25/sys-utils/losetup.c
@@ -462,6 +462,12 @@ static int create_loop(struct loopdev_cx
 				loopcxt_deinit(lc);
 				errx(EXIT_FAILURE, _("%s: overlapping encrypted loop device exists"), file);
 			}
+
+			lc->info.lo_flags &= !LO_FLAGS_AUTOCLEAR;
+			if (loopcxt_set_status(lc)) {
+				loopcxt_deinit(lc);
+				errx(EXIT_FAILURE, _("%s: failed to re-use loop device"), file);
+			}
 			return 0;	/* success, re-use */
 		}
 		default: /* error */

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File util-linux-loop-reuse-17.patch of Package util-linux-systemd.4767

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