Ming Lei 454be724f6 block: drain queue before waiting for q_usage_counter becoming zero ... Now we track legacy requests with .q_usage_counter in commit 055f6e18e0 ("block: Make q_usage_counter also track legacy requests"), but that commit never runs and drains legacy queue before waiting for this counter becoming zero, then IO hang is caused in the test of pulling disk during IO. This patch fixes the issue by draining requests before waiting for q_usage_counter becoming zero, both Mauricio and chenxiang reported this issue, and observed that it can be fixed by this patch. Link: https://marc.info/?l=linux-block&m=151192424731797&w=2 Fixes: 055f6e18e08f("block: Make q_usage_counter also track legacy requests") Cc: Wen Xiong <wenxiong@us.ibm.com> Tested-by: "chenxiang (M)" <chenxiang66@hisilicon.com> Tested-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2018-01-05 09:09:48 -07:00
..
partitions	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
badblocks.c	badblocks: fix wrong return value in badblocks_set if badblocks are disabled	2017-11-03 11:29:50 -07:00
bfq-cgroup.c	block, bfq: move debug blkio stats behind CONFIG_DEBUG_BLK_CGROUP	2017-11-14 20:13:33 -07:00
bfq-iosched.c	block, bfq: move debug blkio stats behind CONFIG_DEBUG_BLK_CGROUP	2017-11-14 20:13:33 -07:00
bfq-iosched.h	block, bfq: move debug blkio stats behind CONFIG_DEBUG_BLK_CGROUP	2017-11-14 20:13:33 -07:00
bfq-wf2q.c	block, bfq: update blkio stats outside the scheduler lock	2017-11-14 20:13:33 -07:00
bio-integrity.c	block: remove unnecessary NULL checks in bioset_integrity_free()	2017-10-06 13:03:12 -06:00
bio.c	block-throttle: avoid double charge	2017-12-20 11:10:17 -07:00
blk-cgroup.c	blkcg: add sanity check for blkcg policy operations	2017-11-04 12:31:15 -06:00
blk-core.c	block: drain queue before waiting for q_usage_counter becoming zero	2018-01-05 09:09:48 -07:00
blk-exec.c	block: introduce new block status code type	2017-06-09 09:27:32 -06:00
blk-flush.c	blk-mq: don't allocate driver tag upfront for flush rq	2017-11-04 12:40:13 -06:00
blk-integrity.c	block: switch bios to blk_status_t	2017-06-09 09:27:32 -06:00
blk-ioc.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
blk-lib.c	Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block	2017-11-14 15:32:19 -08:00
blk-map.c	block: fix blk_rq_append_bio	2017-12-18 13:55:43 -07:00
blk-merge.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
blk-mq-cpumap.c	blk-mq: map queues to all present CPUs	2017-07-24 10:01:31 -06:00
blk-mq-debugfs.c	Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block	2017-11-14 15:32:19 -08:00
blk-mq-debugfs.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
blk-mq-pci.c	blk-mq-pci: add a fallback when pci_irq_get_affinity returns NULL	2017-08-18 08:08:14 -06:00
blk-mq-rdma.c	block: Add rdma affinity based queue mapping helper	2017-08-08 14:58:03 -04:00
blk-mq-sched.c	blk-mq: only run the hardware queue if IO is pending	2017-11-10 19:55:57 -07:00
blk-mq-sched.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
blk-mq-sysfs.c	blk-mq: untangle debugfs and sysfs	2017-05-04 08:24:13 -06:00
blk-mq-tag.c	block: remove blk_mq_reinit_tagset	2017-10-18 19:27:49 +02:00
blk-mq-tag.h	Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block	2017-11-14 15:32:19 -08:00
blk-mq-virtio.c	blk-mq: provide a default queue mapping for virtio device	2017-02-27 20:54:05 +02:00
blk-mq.c	block: drain queue before waiting for q_usage_counter becoming zero	2018-01-05 09:09:48 -07:00
blk-mq.h	Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block	2017-11-14 15:32:19 -08:00
blk-settings.c	block: remove __bio_kmap_atomic	2017-11-10 19:53:25 -07:00
blk-softirq.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
blk-stat.c	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
blk-stat.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
blk-sysfs.c	blk-sysfs: remove NULL pointer checking in queue_wb_lat_store	2017-11-23 22:00:17 -07:00
blk-tag.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
blk-throttle.c	block-throttle: avoid double charge	2017-12-20 11:10:17 -07:00
blk-timeout.c	block: Fix a race between blk_cleanup_queue() and timeout handling	2017-10-30 13:28:10 -06:00
blk-wbt.c	blk-wbt: fix comments typo	2017-11-23 22:00:20 -07:00
blk-wbt.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
blk-zoned.c	block: replace bi_bdev with a gendisk pointer and partitions index	2017-08-23 12:49:55 -06:00
blk.h	block: drain queue before waiting for q_usage_counter becoming zero	2018-01-05 09:09:48 -07:00
bounce.c	block: don't let passthrough IO go into .make_request_fn()	2017-12-18 13:55:43 -07:00
bsg-lib.c	bsg-lib: fix use-after-free under memory-pressure	2017-10-04 08:35:04 -06:00
bsg.c	block: pass full fmode_t to blk_verify_command	2017-11-10 19:53:25 -07:00
cfq-iosched.c	block/cfq: cache rightmost rb_node	2017-09-08 18:26:49 -07:00
cmdline-parser.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
compat_ioctl.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
deadline-iosched.c	block, scheduler: convert xxx_var_store to void	2017-08-28 10:01:08 -06:00
elevator.c	elevator: allow name aliases	2017-10-25 12:36:50 -06:00
genhd.c	block: genhd.c: fix message typo	2017-11-19 11:02:19 -07:00
ioctl.c	block: move CAP_SYS_ADMIN check in blkdev_roset()	2017-10-25 12:25:00 -06:00
ioprio.c	block: Add fallthrough markers to switch statements	2017-06-21 11:46:07 -06:00
Kconfig	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Kconfig.iosched	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
kyber-iosched.c	kyber: fix another domain token wait queue hang	2017-12-06 12:33:07 -07:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mq-deadline.c	mq-deadline: add 'deadline' as a name alias	2017-10-25 12:36:55 -06:00
noop-iosched.c	block: move existing elevator ops to union	2017-01-17 10:03:33 -07:00
opal_proto.h	block: sed-opal: Set MBRDone on S3 resume path if TPER is MBREnabled	2017-09-11 09:45:52 -06:00
partition-generic.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
scsi_ioctl.c	block: pass full fmode_t to blk_verify_command	2017-11-10 19:53:25 -07:00
sed-opal.c	block: sed-opal: Set MBRDone on S3 resume path if TPER is MBREnabled	2017-09-11 09:45:52 -06:00
t10-pi.c	t10-pi: Move opencoded contants to common header	2017-07-03 16:56:25 -06:00