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Groups > linux.kernel > #1531710

[PATCH 07/23] lightnvm: rrpc: split bios of size > 256kb

From Matias Bjørling <m@bjorling.me>
Newsgroups linux.kernel
Subject [PATCH 07/23] lightnvm: rrpc: split bios of size > 256kb
Date 2016-11-28 22:50 +0100
Message-ID <sIBYf-7z9-77@gated-at.bofh.it> (permalink)
References <sIBOx-7vt-19@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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;
-- 
2.9.3

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Thread

[PATCH 00/23] LightNVM patches for 4.10 Matias Bjørling <m@bjorling.me> - 2016-11-28 22:40 +0100
  [PATCH 16/23] lightnvm: remove get_lun operation on gennvm Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 11/23] lightnvm: remove unnecessary variables in rrpc Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 05/23] lightnvm: export set bad block table Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 01/23] nvme: lightnvm: frees wrong cmd structure Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 13/23] lightnvm: remove gen_lun abstraction Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 21/23] lightnvm: introduce max_phys_sects helper function Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 14/23] lightnvm: manage lun partitions internally in mm Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 04/23] lightnvm: do not protect block 0 Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 20/23] lightnvm: introduce helpers for generic ops in rrpc Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 03/23] lightnvm: enable to send hint to erase command Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 09/23] lightnvm: cleanup unused target operations Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 17/23] lightnvm: remove debug lun statistics from gennvm Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 07/23] lightnvm: rrpc: split bios of size > 256kb Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 12/23] lightnvm: use constant name instead of value Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 02/23] nvme: lightnvm: attach lightnvm sysfs to nvme block device Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 08/23] lightnvm: remove sysfs configuration interface Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 19/23] lightnvm: eliminate nvm_lun abstraction in mm Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 10/23] lightnvm: make address conversion functions global Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 22/23] lightnvm: use target nvm on target-specific ops. Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 23/23] lightnvm: transform target get/set bad block Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 18/23] lightnvm: eliminate nvm_block abstraction on mm Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100
  [PATCH 06/23] lightnvm: add ECC error codes Matias Bjørling <m@bjorling.me> - 2016-11-28 22:50 +0100

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