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authorPaul Gortmaker <paul.gortmaker@windriver.com>2014-08-08 14:19:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-08 15:57:18 -0700
commit4dfe694f616e00e6fd83e5bbcd7a3c4d7113493d (patch)
tree88cfc07a6e22fc75ba7260e83c0bd485353bc3c4 /init
parent6f4535ed7d626c3760243b9c5223baaa358a5fdd (diff)
downloadlinux-stericsson-4dfe694f616e00e6fd83e5bbcd7a3c4d7113493d.tar.gz
init: make rootdelay=N consistent with rootwait behaviour
Currently rootdelay=N and rootwait behave differently (aside from the obvious unbounded wait duration) because they are at different places in the init sequence. The difference manifests itself for md devices because the call to md_run_setup() lives between rootdelay and rootwait, so if you try to use rootdelay=20 to try and allow a slow RAID0 array to assemble, you get this: [ 4.526011] sd 6:0:0:0: [sdc] Attached SCSI removable disk [ 22.972079] md: Waiting for all devices to be available before autodetect i.e. you've achieved nothing other than delaying the probing 20s, when what you wanted was a 20s delay _after_ the probing for md devices was initiated. Here we move the rootdelay code to be right beside the rootwait code, so that their behaviour is consistent. It should be noted that in doing so, the actions based on the saved_root_name[0] and initrd_load() were previously put on hold by rootdelay=N and now currently will not be delayed. However, I think consistent behaviour is more important than matching historical behaviour of delaying the above two operations. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init')
-rw-r--r--init/do_mounts.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/init/do_mounts.c b/init/do_mounts.c
index 82f22885c87e..b6237c31b0e2 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -539,12 +539,6 @@ void __init prepare_namespace(void)
{
int is_floppy;
- if (root_delay) {
- printk(KERN_INFO "Waiting %d sec before mounting root device...\n",
- root_delay);
- ssleep(root_delay);
- }
-
/*
* wait for the known devices to complete their probing
*
@@ -571,6 +565,12 @@ void __init prepare_namespace(void)
if (initrd_load())
goto out;
+ if (root_delay) {
+ pr_info("Waiting %d sec before mounting root device...\n",
+ root_delay);
+ ssleep(root_delay);
+ }
+
/* wait for any asynchronous scanning to complete */
if ((ROOT_DEV == 0) && root_wait) {
printk(KERN_INFO "Waiting for root device %s...\n",