Btrfs: Fix add_extent_mapping to check for duplicates across the whole range
authorChris Mason <chris.mason@oracle.com>
Wed, 20 Aug 2008 12:51:50 +0000 (08:51 -0400)
committerChris Mason <chris.mason@oracle.com>
Thu, 25 Sep 2008 15:04:06 +0000 (11:04 -0400)
commit7c2fe32a238eb12422beca5cbd5194a594baa559
treea95bada9d991780e0611e94529e63c8178f4f3be
parent902b22f341efa00be802418a0a8c57bddcd269a6
Btrfs: Fix add_extent_mapping to check for duplicates across the whole range

add_extent_mapping was allowing the insertion of overlapping extents.
This never used to happen because it only inserted the extents from disk
and those were never overlapping.

But, with the data=ordered code, the disk and memory representations of the
file are not the same.  add_extent_mapping needs to ensure a new extent
does not overlap before it inserts.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
fs/btrfs/extent_map.c
fs/btrfs/inode.c