Christoph Hellwig 9f87fc4d72 block: queue data commands from the flush state machine at the head ... We used to insert the data commands following a pre-flush to the head of the queue until commit 1e82fadfc6 ("blk-mq: do not do head insertions post-pre-flush commands"). Not doing this seems to cause hangs of such commands on NFS workloads when exported from file systems with SATA SSDs. I have no idea why this would starve these workloads, but doing a semantic revert of this patch (which looks quite different due to various other changes) fixes the hangs. Fixes: 1e82fadfc6 ("blk-mq: do not do head insertions post-pre-flush commands") Reported-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Chuck Lever <chuck.lever@oracle.com> Link: https://lore.kernel.org/r/20230714143014.11879-1-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>		2023-07-14 08:42:58 -06:00
..
partitions	block/partition: fix signedness issue for Amiga partitions	2023-07-05 16:34:56 -06:00
badblocks.c	block/badblocks: Remove redundant assignments	2022-04-23 07:15:26 -06:00
bdev.c	block: Improve kernel-doc headers	2023-06-21 13:18:15 -06:00
bfq-cgroup.c	blkcg: Restructure blkg_conf_prep() and friends	2023-04-13 06:46:49 -06:00
bfq-iosched.c	SCSI misc on 20230629	2023-06-30 11:57:07 -07:00
bfq-iosched.h	block, bfq: remove BFQ_WEIGHT_LEGACY_DFL	2023-04-06 16:17:32 -06:00
bfq-wf2q.c	block, bfq: inject I/O to underutilized actuators	2023-01-29 15:18:33 -07:00
bio-integrity.c	block: bio-integrity: Copy flags when bio_integrity_payload is cloned	2023-02-16 11:05:41 -07:00
bio.c	block: add bio_add_folio_nofail	2023-06-01 09:13:31 -06:00
blk-cgroup-fc-appid.c	block: Replace all non-returning strlcpy with strscpy	2023-06-01 09:13:31 -06:00
blk-cgroup-rwstat.c	Revert "blk-cgroup: pin the gendisk in struct blkcg_gq"	2023-02-14 14:24:09 -07:00
blk-cgroup-rwstat.h	block: Use the new blk_opf_t type	2022-07-14 12:14:30 -06:00
blk-cgroup.c	Merge branch 'for-6.5/block-late' into block-6.5	2023-06-28 16:08:19 -06:00
blk-cgroup.h	for-6.4/block-2023-04-21	2023-04-26 12:52:58 -07:00
blk-core.c	SCSI misc on 20230629	2023-06-30 11:57:07 -07:00
blk-crypto-fallback.c	treewide: use get_random_bytes() when possible	2022-10-11 17:42:58 -06:00
blk-crypto-internal.h	blk-crypto: remove blk_crypto_insert_cloned_request()	2023-03-16 09:35:09 -06:00
blk-crypto-profile.c	blk-crypto: use dynamic lock class for blk_crypto_profile::lock	2023-07-05 16:36:12 -06:00
blk-crypto-sysfs.c	block: make kobj_type structures constant	2023-02-09 09:38:16 -07:00
blk-crypto.c	blk-crypto: make blk_crypto_evict_key() more robust	2023-03-16 09:35:09 -06:00
blk-flush.c	block: queue data commands from the flush state machine at the head	2023-07-14 08:42:58 -06:00
blk-ia-ranges.c	block: make kobj_type structures constant	2023-02-09 09:38:16 -07:00
blk-integrity.c	blk-integrity: register sysfs attributes on struct device	2023-04-26 18:22:50 -06:00
blk-ioc.c	blk-ioc: fix recursive spin_lock/unlock_irq() in ioc_clear_queue()	2023-06-07 07:51:00 -06:00
blk-iocost.c	blk-iocost: move wbt_enable/disable_default() out of spinlock	2023-06-26 09:53:36 -06:00
blk-iolatency.c	blk-iolatency: Make initialization lazy	2023-04-13 06:46:49 -06:00
blk-ioprio.c	blk-ioprio: Introduce promote-to-rt policy	2023-06-06 22:26:26 -06:00
blk-ioprio.h	blk-ioprio: pass a gendisk to blk_ioprio_init and blk_ioprio_exit	2022-09-26 19:09:31 -06:00
blk-lib.c	blk-lib: fix blkdev_issue_secure_erase	2022-09-15 00:25:17 -06:00
blk-map.c	for-6.5/block-2023-06-23	2023-06-26 12:47:20 -07:00
blk-merge.c	blk-mq: release crypto keyslot before reporting I/O complete	2023-03-16 09:35:09 -06:00
blk-mq-cpumap.c	blk-mq: include <linux/blk-mq.h> in block/blk-mq.h	2023-04-13 06:52:29 -06:00
blk-mq-debugfs-zoned.c	block: move zone related fields to struct gendisk	2022-07-06 06:46:26 -06:00
blk-mq-debugfs.c	blk-mq: fix potential io hang by wrong 'wake_batch'	2023-06-12 09:55:53 -06:00
blk-mq-debugfs.h	block: remove per-disk debugfs files in blk_unregister_queue	2022-06-17 07:31:05 -06:00
blk-mq-pci.c	blk-mq: include <linux/blk-mq.h> in block/blk-mq.h	2023-04-13 06:52:29 -06:00
blk-mq-sched.c	blk-mq: cleanup __blk_mq_sched_dispatch_requests	2023-04-13 06:57:18 -06:00
blk-mq-sched.h	blk-mq: make sure elevator callbacks aren't called for passthrough request	2023-05-18 19:42:54 -06:00
blk-mq-sysfs.c	blk-mq: include <linux/blk-mq.h> in block/blk-mq.h	2023-04-13 06:52:29 -06:00
blk-mq-tag.c	for-6.5/block-2023-06-23	2023-06-26 12:47:20 -07:00
blk-mq-virtio.c	blk-mq: include <linux/blk-mq.h> in block/blk-mq.h	2023-04-13 06:52:29 -06:00
blk-mq.c	blk-mq: fix start_time_ns and alloc_time_ns for pre-allocated rq	2023-07-13 12:30:57 -06:00
blk-mq.h	blk-mq: fix potential io hang by wrong 'wake_batch'	2023-06-12 09:55:53 -06:00
blk-pm.c	blk-mq: include <linux/blk-mq.h> in block/blk-mq.h	2023-04-13 06:52:29 -06:00
blk-pm.h	block: Remove unused blk_pm_*() function definitions	2021-02-22 06:33:48 -07:00
blk-rq-qos.c	block/rq_qos: protect rq_qos apis with a new lock	2023-05-23 11:13:19 -06:00
blk-rq-qos.h	blk-iolatency: s/blkcg_rq_qos/iolat_rq_qos/	2023-04-13 06:46:49 -06:00
blk-settings.c	block: fix revalidate performance regression	2023-05-29 08:40:32 -06:00
blk-stat.c	blk-mq: include <linux/blk-mq.h> in block/blk-mq.h	2023-04-13 06:52:29 -06:00
blk-stat.h	block: make queue stat accounting a reference	2021-12-14 17:23:05 -07:00
blk-sysfs.c	blk-sysfs: add a new attr_group for blk_mq	2023-06-26 09:53:36 -06:00
blk-throttle.c	blk-throttle: Fix io statistics for cgroup v1	2023-06-25 08:00:39 -06:00
blk-throttle.h	blk-throttle: Fix io statistics for cgroup v1	2023-06-25 08:00:39 -06:00
blk-timeout.c	block: blk-timeout: delete duplicated word	2020-07-31 16:29:47 -06:00
blk-wbt.c	Merge branch 'for-6.5/block-late' into block-6.5	2023-06-28 16:08:19 -06:00
blk-wbt.h	blk-wbt: don't create wbt sysfs entry if CONFIG_BLK_WBT is disabled	2023-06-26 09:53:36 -06:00
blk-zoned.c	block: replace fmode_t with a block-specific type for block open flags	2023-06-12 08:04:05 -06:00
blk.h	block: remove BIO_PAGE_REFFED	2023-06-16 10:08:09 -06:00
bounce.c	block: change the blk_queue_bounce calling convention	2022-08-02 17:22:54 -06:00
bsg-lib.c	scsi: replace the fmode_t argument to ->sg_io_fn with a simple bool	2023-06-12 08:04:04 -06:00
bsg.c	SCSI misc on 20230629	2023-06-30 11:57:07 -07:00
disk-events.c	block: increment diskseq on all media change events	2023-06-20 07:16:24 -06:00
early-lookup.c	block: don't return -EINVAL for not found names in devt_from_devname	2023-06-22 09:09:33 -06:00
elevator.c	block: Replace all non-returning strlcpy with strscpy	2023-06-01 09:13:31 -06:00
elevator.h	blk-mq: pass a flags argument to elevator_type->insert_requests	2023-04-13 06:52:30 -06:00
fops.c	- Yosry Ahmed brought back some cgroup v1 stats in OOM logs.	2023-06-28 10:28:11 -07:00
genhd.c	block: fix the exclusive open mask in disk_scan_partitions	2023-06-21 07:37:52 -06:00
holder.c	block: don't allow a disk link holder to itself	2022-11-16 15:19:56 -07:00
ioctl.c	block: fine-granular CAP_SYS_ADMIN for Persistent Reservation	2023-06-20 12:49:23 -06:00
ioprio.c	scsi: block: Improve ioprio value validity checks	2023-06-16 12:04:30 -04:00
Kconfig	for-6.4/block-2023-04-21	2023-04-26 12:52:58 -07:00
Kconfig.iosched	block: Default to use cgroup support for BFQ	2023-01-30 09:42:42 -07:00
kyber-iosched.c	blk-mq: pass a flags argument to elevator_type->insert_requests	2023-04-13 06:52:30 -06:00
Makefile	block: move the code to do early boot lookup of block devices to block/	2023-06-05 10:57:40 -06:00
mq-deadline.c	block/mq-deadline: Fix a bug in deadline_from_pos()	2023-07-12 11:37:41 -06:00
opal_proto.h	sed-opal: allow user authority to get locking range attributes.	2023-04-05 07:46:25 -06:00
sed-opal.c	sed-opal: geometry feature reporting command	2023-04-19 14:07:13 -06:00
t10-pi.c	block: add pi for extended integrity	2022-03-07 12:48:35 -07:00