diff options
Diffstat (limited to 'device/io_req.h')
| -rw-r--r-- | device/io_req.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/device/io_req.h b/device/io_req.h index b80b3dde..e66e0800 100644 --- a/device/io_req.h +++ b/device/io_req.h @@ -95,6 +95,8 @@ struct io_req { * locking is needed in this sequence. Unfortunately, a synchronous wait * for a buffer requires a lock to avoid problems if the wait and interrupt * happen simultaneously on different processors. + * + * Shall be taken at splio only */ #define ior_lock(ior) simple_lock(&(ior)->io_req_lock) |