diff options
Diffstat (limited to 'fs/cifs/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 606ca8bb7102..4de737575959 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -508,6 +508,18 @@ static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon, #endif +struct mid_q_entry; + +/* + * This is the prototype for the mid callback function. When creating one, + * take special care to avoid deadlocks. Things to bear in mind: + * + * - it will be called by cifsd + * - the GlobalMid_Lock will be held + * - the mid will be removed from the pending_mid_q list + */ +typedef void (mid_callback_t)(struct mid_q_entry *mid); + /* one of these for every pending CIFS request to the server */ struct mid_q_entry { struct list_head qhead; /* mids waiting on reply from this server */ @@ -519,7 +531,8 @@ struct mid_q_entry { unsigned long when_sent; /* time when smb send finished */ unsigned long when_received; /* when demux complete (taken off wire) */ #endif - struct task_struct *tsk; /* task waiting for response */ + mid_callback_t *callback; /* call completion callback */ + void *callback_data; /* general purpose pointer for callback */ struct smb_hdr *resp_buf; /* response buffer */ int midState; /* wish this were enum but can not pass to wait_event */ __u8 command; /* smb command code */ |