Btrfs: set UNWRITTEN for prealloc'ed extents in fiemap
We should be doing this, it's weird we hadn't been doing this. Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NChris Mason <clm@fb.com>
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We should be doing this, it's weird we hadn't been doing this. Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NChris Mason <clm@fb.com>