[PATCH 05/20] lightnvm: rrpc: split bios of size > 256kb

From	"Javier González" <jg@lightnvm.io>
Newsgroups	linux.kernel
Subject	[PATCH 05/20] lightnvm: rrpc: split bios of size > 256kb
Date	2016-11-18 15:50 +0100
Message-ID	<sESEj-8qT-45@gated-at.bofh.it> (permalink)
References	<sESEh-8qT-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

From: Javier González <jg@lightnvm.io>

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>
---
 drivers/lightnvm/rrpc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index 2b71b7e..60ca9d4 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -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;
-- 
2.7.4

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

[PATCH 05/20] lightnvm: rrpc: split bios of size > 256kb "Javier González" <jg@lightnvm.io> - 2016-11-18 15:50 +0100

csiph-web