libosd: Use new blk_rq_map_kern

Now that blk_rq_map_kern will append the buffer onto the
request we can use it easily for adding extra segments
(eg. attributes)

This patch is dependent on a block layer patch titled:
   [BLOCK] allow blk_rq_map_kern to append to requests

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/drivers/scsi/osd/osd_initiator.c b/drivers/scsi/osd/osd_initiator.c
index d178a8b..bf66e30 100644 (file)
--- a/drivers/scsi/osd/osd_initiator.c
+++ b/drivers/scsi/osd/osd_initiator.c
@@ -826,26 +826,6 @@ int osd_req_add_set_attr_list(struct osd_request *or,
 }
 EXPORT_SYMBOL(osd_req_add_set_attr_list);
 
-static int _append_map_kern(struct request *req,
-       void *buff, unsigned len, gfp_t flags)
-{
-       struct bio *bio;
-       int ret;
-
-       bio = bio_map_kern(req->q, buff, len, flags);
-       if (IS_ERR(bio)) {
-               OSD_ERR("Failed bio_map_kern(%p, %d) => %ld\n", buff, len,
-                       PTR_ERR(bio));
-               return PTR_ERR(bio);
-       }
-       ret = blk_rq_append_bio(req->q, req, bio);
-       if (ret) {
-               OSD_ERR("Failed blk_rq_append_bio(%p) => %d\n", bio, ret);
-               bio_put(bio);
-       }
-       return ret;
-}
-
 static int _req_append_segment(struct osd_request *or,
        unsigned padding, struct _osd_req_data_segment *seg,
        struct _osd_req_data_segment *last_seg, struct _osd_io_info *io)
@@ -861,14 +841,14 @@ static int _req_append_segment(struct osd_request *or,
                else
                        pad_buff = io->pad_buff;
 
-               ret = _append_map_kern(io->req, pad_buff, padding,
+               ret = blk_rq_map_kern(io->req->q, io->req, pad_buff, padding,
                                       or->alloc_flags);
                if (ret)
                        return ret;
                io->total_bytes += padding;
        }
 
-       ret = _append_map_kern(io->req, seg->buff, seg->total_bytes,
+       ret = blk_rq_map_kern(io->req->q, io->req, seg->buff, seg->total_bytes,
                               or->alloc_flags);
        if (ret)
                return ret;