Commit 70bfb3a8 authored by Jan Kara's avatar Jan Kara
Browse files

udf: Truncate added extents on failed expansion 



When a file expansion failed because we didn't have enough space for
indirect extents make sure we truncate extents created so far so that we
don't leave extents beyond EOF.

CC: stable@vger.kernel.org
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent 1e0290d6

fs/udf/inode.c

+11 −4
Original line number Diff line number Diff line
@@ -431,8 +431,10 @@ static int udf_do_extend_file(struct inode *inode, 
	}



	if (fake) {

		udf_add_aext(inode, last_pos, &last_ext->extLocation,

		err = udf_add_aext(inode, last_pos, &last_ext->extLocation,

				   last_ext->extLength, 1);

		if (err < 0)

			goto out_err;

		count++;

	} else {

		struct kernel_lb_addr tmploc;
@@ -466,7 +468,7 @@ static int udf_do_extend_file(struct inode *inode, 
		err = udf_add_aext(inode, last_pos, &last_ext->extLocation,

				   last_ext->extLength, 1);

		if (err)

			return err;

			goto out_err;

		count++;

	}

	if (new_block_bytes) {
@@ -475,7 +477,7 @@ static int udf_do_extend_file(struct inode *inode, 
		err = udf_add_aext(inode, last_pos, &last_ext->extLocation,

				   last_ext->extLength, 1);

		if (err)

			return err;

			goto out_err;

		count++;

	}
@@ -489,6 +491,11 @@ static int udf_do_extend_file(struct inode *inode, 
		return -EIO;



	return count;

out_err:

	/* Remove extents we've created so far */

	udf_clear_extent_cache(inode);

	udf_truncate_extents(inode);

	return err;

}



/* Extend the final block of the file to final_block_len bytes */