scsi/osd: open code blk_make_request
I wish the OSD code could simply use blk_rq_map_* helpers like
everyone else, but the complex nature of deciding if we have
DATA IN and/or DATA OUT buffers might make this impossible
(at least for a mere human like me).
But using blk_rq_append_bio at least allows sharing the setup code
between request with or without dat a buffers, and given that this
is the last user of blk_make_request it allows getting rid of that
somewhat awkward interface.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Boaz Harrosh <ooo@electrozaur.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/drivers/scsi/osd/osd_initiator.c b/drivers/scsi/osd/osd_initiator.c
index daa4dc1..2f2a991 100644
--- a/drivers/scsi/osd/osd_initiator.c
+++ b/drivers/scsi/osd/osd_initiator.c
@@ -1558,18 +1558,25 @@
static struct request *_make_request(struct request_queue *q, bool has_write,
struct _osd_io_info *oii, gfp_t flags)
{
- if (oii->bio)
- return blk_make_request(q, oii->bio, flags);
- else {
- struct request *req;
+ struct request *req;
+ struct bio *bio = oii->bio;
+ int ret;
- req = blk_get_request(q, has_write ? WRITE : READ, flags);
- if (IS_ERR(req))
- return req;
-
- blk_rq_set_block_pc(req);
+ req = blk_get_request(q, has_write ? WRITE : READ, flags);
+ if (IS_ERR(req))
return req;
+ blk_rq_set_block_pc(req);
+
+ for_each_bio(bio) {
+ struct bio *bounce_bio = bio;
+
+ blk_queue_bounce(req->q, &bounce_bio);
+ ret = blk_rq_append_bio(req, bounce_bio);
+ if (ret)
+ return ERR_PTR(ret);
}
+
+ return req;
}
static int _init_blk_request(struct osd_request *or,