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linux/fs/ext4/extents.c
Eryu Guan 30d8953ff1 ext4: check for zero length extent explicitly 
commit 2f974865ff upstream.

The following commit introduced a bug when checking for zero length extent

5946d08 ext4: check for overlapping extents in ext4_valid_extent_entries()

Zero length extent could pass the check if lblock is zero.

Adding the explicit check for zero length back.

Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
2015-05-28 10:00:03 +01:00

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