| commit | 077413082f9ade9ca4d9774dbdc81ee7256d8089 | [log] [tgz] |
|---|---|---|
| author | Alex Elder <elder@inktank.com> | Tue Feb 05 23:41:50 2013 -0600 |
| committer | Sage Weil <sage@inktank.com> | Wed Feb 13 18:29:11 2013 -0800 |
| tree | 825678f1ad0b9108bb2beb7e6f1e29415d49d27c | |
| parent | a14ea269dd6b5e48a2941ba73b202cd7cd5d716d [diff] |
rbd: add barriers near done flag operations
Somehow, I missed this little item in Documentation/atomic_ops.txt:
*** WARNING: atomic_read() and atomic_set() DO NOT IMPLY BARRIERS! ***
Create and use some helper functions that include the proper memory
barriers for manipulating the done field.
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>