rrpc cannot handle bios of size > 256kb due to NVME's 64 bit completion
bitmap. If a larger bio comes, split it explicitly.
Signed-off-by: Javier González <jav...@cnexlabs.com>
---
drivers/lightnvm/rrpc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index 8deef2e..0b8251f 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -984,6 +984,12 @@ static blk_qc_t rrpc_make_rq(struct request_queue *q,
struct bio *bio)
struct nvm_rq *rqd;
int err;
+ /*
+ * Multipage is supported up until 256kb due to NVME's 64 bit completion
+ * bitmap.
+ */
+ blk_queue_split(q, &bio, q->bio_split);
+
if (bio_op(bio) == REQ_OP_DISCARD) {
rrpc_discard(rrpc, bio);
return BLK_QC_T_NONE;
--
2.7.4
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