| commit | 6080758d441acd7765314f3e9b6ca843e18e9a68 | [log] [tgz] |
|---|---|---|
| author | Bart Van Assche <bart.vanassche@sandisk.com> | Fri Nov 18 14:28:00 2016 -0800 |
| committer | Mike Snitzer <snitzer@redhat.com> | Thu Dec 08 14:13:08 2016 -0500 |
| tree | ed5a796823ccb7e039b209d7e88a550d3fd74e8f | |
| parent | b23df0d048e5f137ad5c2a116ec0849a98d43b96 [diff] |
dm ioctl: use offsetof() instead of open-coding it Subtracting sizes is a fragile approach because the result is only correct if the compiler has not added any padding at the end of the structure. Hence use offsetof() instead of size subtraction. An additional advantage of offsetof() is that it makes the intent more clear. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>