The patch titled
Subject: init/do_mounts.c: add create_dev() failure log
has been added to the -mm tree. Its filename is
init-do_mounts-add-create_dev-failure-log.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/init-do_mounts-add-create_dev-failure-log.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/init-do_mounts-add-create_dev-failure-log.patch
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------------------------------------------------------
From: Vishnu Pratap Singh <vishnu.ps@xxxxxxxxxxx>
Subject: init/do_mounts.c: add create_dev() failure log
If create_dev() function fails to create the root mount device
(/dev/root), then it goes to panic as root device not found but there is
no printk in this case. So I have added the log in case it fails to
create the root device. It will help in debugging.
Signed-off-by: Vishnu Pratap Singh <vishnu.ps@xxxxxxxxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
Cc: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
Cc: Mike Snitzer <snitzer@xxxxxxxxxx>
Cc: Dan Ehrenberg <dehrenberg@xxxxxxxxxxxx>
Cc: Miklos Szeredi <mszeredi@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
init/do_mounts.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN init/do_mounts.c~init-do_mounts-add-create_dev-failure-log init/do_mounts.c
--- a/init/do_mounts.c~init-do_mounts-add-create_dev-failure-log
+++ a/init/do_mounts.c
@@ -533,7 +533,8 @@ void __init mount_root(void)
}
#endif
#ifdef CONFIG_BLOCK
- create_dev("/dev/root", ROOT_DEV);
+ if (create_dev("/dev/root", ROOT_DEV) < 0)
+ pr_err("Failed to create %s device !\n", "/dev/root");
mount_block_root("/dev/root", root_mountflags);
#endif
}
_
Patches currently in -mm which might be from vishnu.ps@xxxxxxxxxxx are
init-do_mounts-add-create_dev-failure-log.patch
init-do_mounts-add-create_dev-failure-log-fix.patch
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