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block: export __make_request

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Avoid the hacks need for request based device mappers currently by simply
exporting the symbol instead of trying to get it through the back door.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Christoph Hellwig
2011-09-12 12:08:27 +02:00
committed by Jens Axboe
parent 484fc254b8
commit 166e1f901b
3 changed files with 5 additions and 15 deletions
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13
drivers/md/dm.c
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@@ -180,9 +180,6 @@ struct mapped_device {
/* forced geometry settings */
struct hd_geometry geometry;
/* For saving the address of __make_request for request based dm */
make_request_fn *saved_make_request_fn;
/* sysfs handle */
struct kobject kobj;
@@ -1420,13 +1417,6 @@ static int _dm_request(struct request_queue *q, struct bio *bio)
return 0;
}
static int dm_make_request(struct request_queue *q, struct bio *bio)
{
struct mapped_device *md = q->queuedata;
return md->saved_make_request_fn(q, bio); /* call __make_request() */
}
static int dm_request_based(struct mapped_device *md)
{
return blk_queue_stackable(md->queue);
@@ -1437,7 +1427,7 @@ static int dm_request(struct request_queue *q, struct bio *bio)
struct mapped_device *md = q->queuedata;
if (dm_request_based(md))
return dm_make_request(q, bio);
return __make_request(q, bio);
return _dm_request(q, bio);
}
@@ -2172,7 +2162,6 @@ static int dm_init_request_based_queue(struct mapped_device *md)
return 0;
md->queue = q;
md->saved_make_request_fn = md->queue->make_request_fn;
dm_init_md_queue(md);
blk_queue_softirq_done(md->queue, dm_softirq_done);
blk_queue_prep_rq(md->queue, dm_prep_fn);