btrfs: Show device attr correctly for symlinks
Symlinks and files of other types show different device numbers, though they are on the same partition: $ touch tmp; ln -s tmp tmp2; stat tmp tmp2 File: `tmp' Size: 0 Blocks: 0 IO Block: 4096 regular empty file Device: 15h/21d Inode: 984027 Links: 1 --- snip --- File: `tmp2' -> `tmp' Size: 3 Blocks: 0 IO Block: 4096 symbolic link Device: 13h/19d Inode: 984028 Links: 1 Reported-by: NToke Høiland-Jørgensen <toke@toke.dk> Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Signed-off-by: NChris Mason <chris.mason@oracle.com>
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