Chaitanya Kulkarni 150dfb6c83 nvmet: don't use BLK_MQ_REQ_NOWAIT for passthru ... By default, we set the passthru request allocation flag such that it returns the error in the following code path and we fail the I/O when BLK_MQ_REQ_NOWAIT is used for request allocation :- nvme_alloc_request()  blk_mq_alloc_request()   blk_mq_queue_enter()    if (flag & BLK_MQ_REQ_NOWAIT)         return -EBUSY; <-- return if busy. On some controllers using BLK_MQ_REQ_NOWAIT ends up in I/O error where the controller is perfectly healthy and not in a degraded state. Block layer request allocation does allow us to wait instead of immediately returning the error when we BLK_MQ_REQ_NOWAIT flag is not used. This has shown to fix the I/O error problem reported under heavy random write workload. Remove the BLK_MQ_REQ_NOWAIT parameter for passthru request allocation which resolves this issue. Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Christoph Hellwig <hch@lst.de>		2020-10-22 15:28:02 +02:00
..
admin-cmd.c	nvmet: handle keep-alive timer when kato is modified by a set features cmd	2020-09-27 09:14:19 +02:00
configfs.c	nvmet: fix a memory leak	2020-08-21 17:14:27 -06:00
core.c	nvmet: fix uninitialized work for zero kato	2020-10-22 15:27:14 +02:00
discovery.c	nvmet: introduce flags member in nvmet_fabrics_ops	2020-07-08 16:16:17 +02:00
fabrics-cmd.c	nvmet: add metadata/T10-PI support	2020-05-27 07:12:40 +02:00
fc.c	nvmet-fc: fix missing check for no hostport struct	2020-09-27 09:14:19 +02:00
fcloop.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
io-cmd-bdev.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
io-cmd-file.c	nvmet: rename nvmet_check_data_len to nvmet_check_transfer_len	2020-05-27 07:12:39 +02:00
Kconfig	nvmet: introduce the passthru Kconfig option	2020-07-29 07:45:21 +02:00
loop.c	nvme-loop: don't put ctrl on nvme_init_ctrl error	2020-10-07 07:56:16 +02:00
Makefile	nvmet: add passthru code to process commands	2020-07-29 07:45:21 +02:00
nvmet.h	nvmet: handle keep-alive timer when kato is modified by a set features cmd	2020-09-27 09:14:19 +02:00
passthru.c	nvmet: don't use BLK_MQ_REQ_NOWAIT for passthru	2020-10-22 15:28:02 +02:00
rdma.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
tcp.c	nvmet-tcp: have queue io_work context run on sock incoming cpu	2020-09-27 09:14:18 +02:00
trace.c	nvmet: trace: parse Get LBA Status command in detail	2019-08-29 12:55:01 -07:00
trace.h	nvmet: add async event tracing support	2020-05-27 07:12:38 +02:00