| commit | fe5fe90639b62a75349dd1f1c74c4a984397171c | [log] [tgz] |
|---|---|---|
| author | Mikulas Patocka <mpatocka@redhat.com> | Fri Oct 12 16:59:46 2012 +0100 |
| committer | Alasdair G Kergon <agk@redhat.com> | Fri Oct 12 16:59:46 2012 +0100 |
| tree | 50332fca2fb4ff5851c4e1bfd8151d41ba83d781 | |
| parent | 54499afbb80e44ae5511984486b4b33d6229fceb [diff] |
dm: use ACCESS_ONCE for sysfs values Use the ACCESS_ONCE macro in dm-bufio and dm-verity where a variable can be modified asynchronously (through sysfs) and we want to prevent compiler optimizations that assume that the variable hasn't changed. (See Documentation/atomic_ops.txt.) Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>