| Description: | |
| ------------ | |
| This tests checks the wb_kupdate code path by writting data to a sparse file | |
| mounted on a loop back device formated with a user specified filesystem, | |
| and waiting a maximum of 'max_flush_time' for writeback to flush the dirty | |
| datat from the cache to disk. | |
| At the end of the test a keyval is generated which states per iteration the time | |
| taken to write the user specified amount of data to disk. |