diff -Nru fstransform-0.9.3/debian/changelog fstransform-0.9.3/debian/changelog
--- fstransform-0.9.3/debian/changelog	2016-04-29 09:34:32.000000000 +0000
+++ fstransform-0.9.3/debian/changelog	2019-04-04 06:50:30.000000000 +0000
@@ -1,3 +1,25 @@
+fstransform (0.9.3-4) unstable; urgency=medium
+
+  * Backport upstream patch that properly fix a data corruption buf (closes:
+    #925957).
+  * Remove warning message, which is now useless.
+
+ -- Giovanni Mascellani <gio@debian.org>  Thu, 04 Apr 2019 08:50:30 +0200
+
+fstransform (0.9.3-3) unstable; urgency=medium
+
+  [ Giovanni Mascellani ]
+  * Update Vcs-* after migration to salsa.
+  * Display a more explicit warning message about the risk of data corruption
+    when executing with little available memory (closes: #925957).
+
+  [ Ondřej Nový ]
+  * d/copyright: Use https protocol in Format field
+  * d/control: Deprecating priority extra as per policy 4.0.1
+  * d/watch: Use https protocol
+
+ -- Giovanni Mascellani <gio@debian.org>  Sat, 30 Mar 2019 11:24:21 +0100
+
 fstransform (0.9.3-2) unstable; urgency=low
 
   * Bump debian/compat to 9 in order to correctly use default build flags
diff -Nru fstransform-0.9.3/debian/control fstransform-0.9.3/debian/control
--- fstransform-0.9.3/debian/control	2016-04-29 09:34:32.000000000 +0000
+++ fstransform-0.9.3/debian/control	2019-04-04 06:50:30.000000000 +0000
@@ -1,12 +1,12 @@
 Source: fstransform
 Section: admin
-Priority: extra
+Priority: optional
 Maintainer: Giovanni Mascellani <gio@debian.org>
 Build-Depends: debhelper (>= 9.0.0), autotools-dev
 Standards-Version: 3.9.8
 Homepage: http://sourceforge.net/projects/fstransform/
-Vcs-Git: https://anonscm.debian.org/git/collab-maint/fstransform.git
-Vcs-Browser: https://anonscm.debian.org/git/collab-maint/fstransform.git
+Vcs-Browser: https://salsa.debian.org/debian/fstransform
+Vcs-Git: https://salsa.debian.org/debian/fstransform.git
 
 Package: fstransform
 Architecture: any
diff -Nru fstransform-0.9.3/debian/copyright fstransform-0.9.3/debian/copyright
--- fstransform-0.9.3/debian/copyright	2016-04-29 09:34:32.000000000 +0000
+++ fstransform-0.9.3/debian/copyright	2019-04-04 06:50:30.000000000 +0000
@@ -1,4 +1,4 @@
-Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 Upstream-Name: fstransform
 Upstream-Contact: Massimiliano Ghilardi <paperinik@users.sf.net>
 Source: http://sourceforge.net/projects/fstransform/
diff -Nru fstransform-0.9.3/debian/patches/fix_corruption.patch fstransform-0.9.3/debian/patches/fix_corruption.patch
--- fstransform-0.9.3/debian/patches/fix_corruption.patch	1970-01-01 00:00:00.000000000 +0000
+++ fstransform-0.9.3/debian/patches/fix_corruption.patch	2019-04-04 06:50:30.000000000 +0000
@@ -0,0 +1,28 @@
+From 0d36162e7f51251bc198a8b6b3b03dd9eedd6628 Mon Sep 17 00:00:00 2001
+From: Massimiliano Ghilardi <massimiliano.ghilardi@gmail.com>
+Date: Wed, 3 Apr 2019 19:53:29 +0200
+Subject: [PATCH] backport fix #13 to version 0.9.3: fix reproducible
+ filesystem corruption with too-low RAM buffer size: the loop copying
+ continuous segments larger than RAM buffer was bugged, it incremented only
+ one iteration variable instead of all three
+
+---
+ fsremap/src/io/io_posix.cc | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/fsremap/src/io/io_posix.cc b/fsremap/src/io/io_posix.cc
+index 926b023..e56d602 100644
+--- a/fsremap/src/io/io_posix.cc
++++ b/fsremap/src/io/io_posix.cc
+@@ -974,6 +974,8 @@ int fr_io_posix::flush_copy_bytes(fr_dir dir, fr_vector<ft_uoff> & request_vec)
+                         || (err = flush_bytes()) != 0)
+                         break;
+ 
++                    from_offset += (ft_uoff) buf_length;
++                    to_offset += (ft_uoff) buf_length;
+                     length -= (ft_uoff) buf_length;
+                 }
+                 if (err != 0)
+-- 
+2.20.1
+
diff -Nru fstransform-0.9.3/debian/patches/series fstransform-0.9.3/debian/patches/series
--- fstransform-0.9.3/debian/patches/series	1970-01-01 00:00:00.000000000 +0000
+++ fstransform-0.9.3/debian/patches/series	2019-04-04 06:50:30.000000000 +0000
@@ -0,0 +1 @@
+fix_corruption.patch
diff -Nru fstransform-0.9.3/debian/watch fstransform-0.9.3/debian/watch
--- fstransform-0.9.3/debian/watch	2016-04-29 09:34:32.000000000 +0000
+++ fstransform-0.9.3/debian/watch	2019-04-04 06:50:30.000000000 +0000
@@ -1,2 +1,2 @@
 version=4
-http://sf.net/fstransform/fstransform-(.+)-src\.tar\.bz2
+https://sf.net/fstransform/fstransform-(.+)-src\.tar\.bz2