1 files changed, 52 insertions, 0 deletions

diff --git a/patches/boot_time_opt_guest/0103-init-wait-for-partition-and-retry-scan.patch b/patches/boot_time_opt_guest/0103-init-wait-for-partition-and-retry-scan.patch
new file mode 100644
index 0000000..98b7b5f
--- /dev/null
+++ b/patches/boot_time_opt_guest/0103-init-wait-for-partition-and-retry-scan.patch
@@ -0,0 +1,52 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Arjan van de Ven <arjan@linux.intel.com>
+Date: Wed, 17 May 2017 01:52:11 +0000
+Subject: [PATCH] init: wait for partition and retry scan
+
+As Clear Linux boots fast the device is not ready when
+the mounting code is reached, so a retry device scan will
+be performed every 0.5 sec for at least 40 sec
+and synchronize the async task.
+
+Signed-off-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
+---
+ init/do_mounts.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/init/do_mounts.c b/init/do_mounts.c
+index b5f9604d0c98..6022ead20701 100644
+--- a/init/do_mounts.c
++++ b/init/do_mounts.c
+@@ -225,11 +225,19 @@ dev_t name_to_dev_t(const char *name)
+        char *p;
+        dev_t res = 0;
+        int part;
++       /* we will wait at least 40 sec */
++       int needtowait = 40<<1;
+ 
+ #ifdef CONFIG_BLOCK
+        if (strncmp(name, "PARTUUID=", 9) == 0) {
+                name += 9;
+                res = devt_from_partuuid(name);
++               while (!res && needtowait) {
++                       /* waiting 0.5 sec */
++                       msleep(500);
++                       res = devt_from_partuuid(name);
++                       needtowait--;
++               }
+                if (!res)
+                        goto fail;
+                goto done;
+@@ -596,7 +604,9 @@ void __init prepare_namespace(void)
+         * For example, it is not atypical to wait 5 seconds here
+         * for the touchpad of a laptop to initialize.
+         */
++       async_synchronize_full();
+        wait_for_device_probe();
++       async_synchronize_full();
+ 
+        md_run_setup();
+ 
+-- 
+https://clearlinux.org
+