diff options
| author | Jens Axboe <axboe@fb.com> | 2014-04-16 21:37:30 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-04-16 21:37:30 -0600 |
| commit | dc4a93078b8a6a10d2dcaba76ab488d6dbe73922 (patch) | |
| tree | cee24991c2d4fa7d6ad6e2be790fde880c0223ed /drivers/scsi/sd.c | |
| parent | fb1be43301ce045b5e563416e701573464a2ed96 (diff) | |
sd/skd: stuff discard page in request->completion_data
Store the pointer to the page there, so we can always safely
reference it from end_io context where ->bio may have been
cleared.
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/scsi/sd.c')
| -rw-r--r-- | drivers/scsi/sd.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 06d154d20faa..96af195224f2 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -737,6 +737,7 @@ static int sd_setup_discard_cmnd(struct scsi_device *sdp, struct request *rq) goto out; } + rq->completion_data = page; blk_add_request_payload(rq, page, len); ret = scsi_setup_blk_pc_cmnd(sdp, rq); rq->__data_len = nr_bytes; @@ -839,11 +840,9 @@ static void sd_unprep_fn(struct request_queue *q, struct request *rq) { struct scsi_cmnd *SCpnt = rq->special; - if (rq->cmd_flags & REQ_DISCARD) { - struct bio *bio = rq->bio; + if (rq->cmd_flags & REQ_DISCARD) + __free_page(rq->completion_data); - __free_page(bio->bi_io_vec->bv_page); - } if (SCpnt->cmnd != rq->cmd) { mempool_free(SCpnt->cmnd, sd_cdb_pool); SCpnt->cmnd = NULL; |