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lightnvm: rrpc: split bios of size > 256kb 

rrpc cannot handle bios of size > 256kb due to NVMe using a 64 bit
bitmap to signal I/O completion. If a larger bio comes, split it
explicitly.

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Javier González 2016-11-28 22:38:58 +01:00 committed by Jens Axboe
parent 402ab9a89d
commit f0b01b6a61
1 changed files with 2 additions and 0 deletions
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drivers/lightnvm/rrpc.c
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@ -943,6 +943,8 @@ static blk_qc_t rrpc_make_rq(struct request_queue *q, struct bio *bio)
struct nvm_rq *rqd;
int err;
blk_queue_split(q, &bio, q->bio_split);
if (bio_op(bio) == REQ_OP_DISCARD) {
rrpc_discard(rrpc, bio);
return BLK_QC_T_NONE;