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[SCSI] scsi_dh: Change the scsidh_activate interface to be asynchronous

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Make scsi_dh_activate() function asynchronous, by taking in two additional
parameters, one is the callback function and the other is the data to call
the callback function with.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Chandra Seetharaman
2009-10-21 09:22:46 -07:00
committed by James Bottomley
parent 42e62a7437
commit 3ae31f6a7b
8 changed files with 42 additions and 20 deletions
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include/scsi/scsi_dh.h
+4 -2
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@@ -56,14 +56,16 @@ enum {
SCSI_DH_DRIVER_MAX,
};
#if defined(CONFIG_SCSI_DH) || defined(CONFIG_SCSI_DH_MODULE)
extern int scsi_dh_activate(struct request_queue *);
extern int scsi_dh_activate(struct request_queue *, activate_complete, void *);
extern int scsi_dh_handler_exist(const char *);
extern int scsi_dh_attach(struct request_queue *, const char *);
extern void scsi_dh_detach(struct request_queue *);
extern int scsi_dh_set_params(struct request_queue *, const char *);
#else
static inline int scsi_dh_activate(struct request_queue *req)
static inline int scsi_dh_activate(struct request_queue *req,
activate_complete fn, void *data)
{
fn(data, 0);
return 0;
}
static inline int scsi_dh_handler_exist(const char *name)