Fixed timeout of partitions re-read on slow machines

Makefile

 all:
 	tar xf parted-3.4.tar.xz
-	cd parted-3.4 && ./configure --prefix=/usr --disable-static
 	patch -Np1 -d parted-3.4 < parted-3.4-fixed_test.patch
+	patch -Np1 -d parted-3.4 < parted-3.4-fix_sync_timeout.patch
+	cd parted-3.4 && ./configure --prefix=/usr --disable-static
 	$(MAKE) -C parted-3.4
 	$(MAKE) -C parted-3.4/doc html
 	cd parted-3.4 && makeinfo --html      -o doc/html       doc/parted.texi

parted-3.4-fix_sync_timeout.patch

+diff -uNr parted-3.4/libparted/arch/linux.c parted-3.4-fix_sync_timeout/libparted/arch/linux.c
+--- parted-3.4/libparted/arch/linux.c	2021-01-25 19:49:56.000000000 +0000
++++ parted-3.4-fix_sync_timeout/libparted/arch/linux.c	1970-01-01 00:42:58.916001229 +0000
+@@ -3147,7 +3147,7 @@
+                 /* Attempt to remove the partition, retrying for
+                    up to max_sleep_seconds upon any failure due to EBUSY. */
+                 unsigned int sleep_microseconds = 10000;
+-                unsigned int max_sleep_seconds = 1;
++                unsigned int max_sleep_seconds = 3;
+                 unsigned int n_sleep = (max_sleep_seconds
+                                         * 1000000 / sleep_microseconds);
+                 do {