btrfs-progs: use kernel for mounted disk for show

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As of now btrfs filesystem show reads directly from
disks. So sometimes output can be stale, mainly when
user wants to cross verify their operation like,
label or device delete or add... etc. so this
patch will read from the kernel ioctl if it finds
that disk is mounted.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

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Anand Jain 2013-10-08 11:41:38 +08:00 committed by Chris Mason

parent a7131ad124

commit 6c2c30ce03

3 changed files with 204 additions and 21 deletions

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