diff options
| author | Christoph Hellwig <hch@lst.de> | 2016-07-19 12:31:53 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-07-21 02:38:35 +0300 |
| commit | 4613c5f1df92f3cb5a8f89c7dfefc37402c16bd8 (patch) | |
| tree | e31b141cd7540e79c4d0bc199f5a4a71db261b69 /drivers | |
| parent | dd9cf04611c566f980638ec0c592c38ea5d463ce (diff) | |
| download | linux-4613c5f1df92f3cb5a8f89c7dfefc37402c16bd8.tar.xz | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/osd/osd_initiator.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/drivers/scsi/osd/osd_initiator.c b/drivers/scsi/osd/osd_initiator.c index daa4dc17f172..2f2a9910e30e 100644 --- a/drivers/scsi/osd/osd_initiator.c +++ b/drivers/scsi/osd/osd_initiator.c @@ -1558,18 +1558,25 @@ static int _osd_req_finalize_data_integrity(struct osd_request *or, 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; - - req = blk_get_request(q, has_write ? WRITE : READ, flags); - if (IS_ERR(req)) - return req; + struct request *req; + struct bio *bio = oii->bio; + int ret; - 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, |