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(parent: aa455d6) | patch
Btrfs: do not use missing devices when showing devname
authorJosef Bacik <jbacik@fusionio.com>
Thu, 2 Aug 2012 14:22:20 +0000 (10:22 -0400)
committerChris Mason <chris.mason@oracle.com>
Tue, 28 Aug 2012 20:53:29 +0000 (16:53 -0400)
commit7029d01410219d242a9251b3bd7c51a65dd06483
tree5ed695e48b6d32fd45e582496edc1b3da6f3b5f0tree | snapshot
parentaa455d6070034c9e04cff74867e3593d39e6f227commit | diff
Btrfs: do not use missing devices when showing devname

If you do the following

mkfs.btrfs /dev/sdb /dev/sdc
rmmod btrfs
dd if=/dev/zero of=/dev/sdb bs=1M count=1
mount -o degraded /dev/sdc /mnt/btrfs-test

the box will panic trying to deref the name for the missing dev since it is
the lower numbered devid.  So fix show_devname to not use missing devices.
Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
fs/btrfs/super.c diff | blob | history
Linux Kernel Source Tree.