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ext4: fix error handling in ext4_ext_shift_extents

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Fix error handling by adding some.  :-)

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Dmitry Monakhov 2014-04-13 15:05:42 -04:00 committed by Theodore Ts'o
parent e2cbd58741
commit 8dc79ec4c0
1 changed files with 9 additions and 2 deletions
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11
fs/ext4/extents.c
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@ -5314,11 +5314,18 @@ ext4_ext_shift_extents(struct inode *inode, handle_t *handle,
* enough to accomodate the shift.
*/
path = ext4_ext_find_extent(inode, start - 1, NULL, 0);
if (IS_ERR(path))
return PTR_ERR(path);
depth = path->p_depth;
extent = path[depth].p_ext;
ex_start = le32_to_cpu(extent->ee_block);
ex_end = le32_to_cpu(extent->ee_block) +
if (extent) {
ex_start = le32_to_cpu(extent->ee_block);
ex_end = le32_to_cpu(extent->ee_block) +
ext4_ext_get_actual_len(extent);
} else {
ex_start = 0;
ex_end = 0;
}
ext4_ext_drop_refs(path);
kfree(path);