X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Fscsi%2Fscsi_tcq.h;h=cf4c219c0b5cb9ab758046737b2ca814164b01a0;hb=2b142900784c6e38c8d39fa57d5f95ef08e735d8;hp=c247a28259bc77fa453994b3492a457f8b99bb7c;hpb=9361401eb7619c033e2394e4f9f6d410d6719ac7;p=safe%2Fjmp%2Flinux-2.6

diff --git a/include/scsi/scsi_tcq.h b/include/scsi/scsi_tcq.h
index c247a28..cf4c219 100644
--- a/include/scsi/scsi_tcq.h
+++ b/include/scsi/scsi_tcq.h
@@ -144,5 +144,25 @@ static inline int scsi_init_shared_tag_map(struct Scsi_Host *shost, int depth)
 	return shost->bqt ? 0 : -ENOMEM;
 }
 
+/**
+ * scsi_host_find_tag - find the tagged command by host
+ * @shost:	pointer to scsi_host
+ * @tag:	tag of the scsi_cmnd
+ *
+ * Notes:
+ *	Only works with tags allocated by the generic blk layer.
+ **/
+static inline struct scsi_cmnd *scsi_host_find_tag(struct Scsi_Host *shost,
+						int tag)
+{
+	struct request *req;
+
+	if (tag != SCSI_NO_TAG) {
+		req = blk_map_queue_find_tag(shost->bqt, tag);
+		return req ? (struct scsi_cmnd *)req->special : NULL;
+	}
+	return NULL;
+}
+
 #endif /* CONFIG_BLOCK */
 #endif /* _SCSI_SCSI_TCQ_H */