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authorTejun Heo <tj@kernel.org>2008-09-01 13:44:35 +0200
committerJens Axboe <jens.axboe@oracle.com>2008-10-09 08:56:11 +0200
commit55dc7db70a73a3809a2334063c9b5b0d8ccebdaa (patch)
treee0e52ad2a0e6d3142945346f5acd7979c2b10e8d /init/do_mounts.c
parent2bbedcb4c1abac498f18e5770d62ae66ff235ada (diff)
downloadlinux-aarch64-55dc7db70a73a3809a2334063c9b5b0d8ccebdaa.tar.gz
init: DEBUG_BLOCK_EXT_DEVT requires explicit root= param
DEBUG_BLOCK_EXT_DEVT shuffles SCSI and IDE device numbers and root device number set using rdev become meaningless. Root devices should be explicitly specified using textual names. Warn about it if root can't be found and DEBUG_BLOCK_EXT_DEVT is enabled. Also, add warning to the help text. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'init/do_mounts.c')
-rw-r--r--init/do_mounts.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/init/do_mounts.c b/init/do_mounts.c
index 3715feb8446d..d055b1914c3d 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -263,6 +263,10 @@ retry:
printk("Please append a correct \"root=\" boot option; here are the available partitions:\n");
printk_all_partitions();
+#ifdef CONFIG_DEBUG_BLOCK_EXT_DEVT
+ printk("DEBUG_BLOCK_EXT_DEVT is enabled, you need to specify "
+ "explicit textual name for \"root=\" boot option.\n");
+#endif
panic("VFS: Unable to mount root fs on %s", b);
}