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Commit 8dc79ec4 authored by Dmitry Monakhov's avatar Dmitry Monakhov Committed by Theodore Ts'o
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ext4: fix error handling in ext4_ext_shift_extents 



Fix error handling by adding some.  :-)

Signed-off-by: default avatarDmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
parent e2cbd587

fs/ext4/extents.c

+9 −2
Original line number Diff line number Diff line
@@ -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;

	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);