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Btrfs: Fix hole insertion corner cases
authorChris Mason <chris.mason@oracle.com>
Tue, 22 Jan 2008 21:47:59 +0000 (16:47 -0500)
committerChris Mason <chris.mason@oracle.com>
Thu, 25 Sep 2008 15:03:59 +0000 (11:03 -0400)
There were a few places that could cause duplicate extent insertion,
this adjusts the code that creates holes to avoid it.

lookup_extent_map is changed to correctly return all of the extents in a
range, even when there are none matching at the start of the range.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

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