[dm-devel] [PATCH RFT/RFC 1/4] export block layer helpers
Mike Christie
michaelc at cs.wisc.edu
Fri Sep 30 19:42:12 UTC 2005
Export some block layer helpers need to perform async
operations.
Signed-off-by: Mike Christie <michaelc at cs.wisc.edu>
diff --git a/drivers/block/ll_rw_blk.c b/drivers/block/ll_rw_blk.c
--- a/drivers/block/ll_rw_blk.c
+++ b/drivers/block/ll_rw_blk.c
@@ -2302,6 +2302,8 @@ void blk_execute_rq_nowait(request_queue
generic_unplug_device(q);
}
+EXPORT_SYMBOL_GPL(blk_execute_rq_nowait);
+
/**
* blk_execute_rq - insert a request into queue for execution
* @q: queue to insert the request in
@@ -2445,7 +2447,7 @@ void disk_round_stats(struct gendisk *di
/*
* queue lock must be held
*/
-static void __blk_put_request(request_queue_t *q, struct request *req)
+void __blk_put_request(request_queue_t *q, struct request *req)
{
struct request_list *rl = req->rl;
@@ -2473,6 +2475,8 @@ static void __blk_put_request(request_qu
}
}
+EXPORT_SYMBOL_GPL(__blk_put_request);
+
void blk_put_request(struct request *req)
{
/*
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -548,6 +548,7 @@ extern void blk_unregister_queue(struct
extern void register_disk(struct gendisk *dev);
extern void generic_make_request(struct bio *bio);
extern void blk_put_request(struct request *);
+extern void __blk_put_request(request_queue_t *, struct request *);
extern void blk_end_sync_rq(struct request *rq);
extern void blk_attempt_remerge(request_queue_t *, struct request *);
extern struct request *blk_get_request(request_queue_t *, int, int);
@@ -569,6 +570,10 @@ extern int blk_rq_map_kern(request_queue
extern int blk_rq_map_user_iov(request_queue_t *, struct request *, struct sg_iovec *, int);
extern int blk_execute_rq(request_queue_t *, struct gendisk *,
struct request *, int);
+extern void blk_execute_rq_nowait(request_queue_t *, struct gendisk *,
+ struct request *, int,
+ void (*done)(struct request *));
+
static inline request_queue_t *bdev_get_queue(struct block_device *bdev)
{
return bdev->bd_disk->queue;
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