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Jens Axboe 67d59247d4 block: don't allow multiple bios for IOCB_NOWAIT issue 
If we're doing a large IO request which needs to be split into multiple
bios for issue, then we can run into the same situation as the below
marked commit fixes - parts will complete just fine, one or more parts
will fail to allocate a request. This will result in a partially
completed read or write request, where the caller gets EAGAIN even though
parts of the IO completed just fine.

Do the same for large bios as we do for splits - fail a NOWAIT request
with EAGAIN. This isn't technically fixing an issue in the below marked
patch, but for stable purposes, we should have either none of them or
both.

This depends on: 613b14884b85 ("block: handle bio_split_to_limits() NULL return")

Cc: stable@vger.kernel.org # 5.15+
Fixes: 9cea62b2cbab ("block: don't allow splitting of a REQ_NOWAIT bio")
Link: https://github.com/axboe/liburing/issues/766
Reported-and-tested-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-01-29 15:18:34 -07:00
..
partitions
block: don't add partitions if GD_SUPPRESS_PART_SCAN is set
2022-09-03 11:29:03 -06:00
badblocks.c
block/badblocks: Remove redundant assignments
2022-04-23 07:15:26 -06:00
bdev.c
block: bdev & blktrace: use consistent function doc. notation
2022-12-01 09:16:46 -07:00
bfq-cgroup.c
block, bfq: inject I/O to underutilized actuators
2023-01-29 15:18:33 -07:00
bfq-iosched.c
block, bfq: balance I/O injection among underutilized actuators
2023-01-29 15:18:33 -07:00
bfq-iosched.h
block, bfq: inject I/O to underutilized actuators
2023-01-29 15:18:33 -07:00
bfq-wf2q.c
block, bfq: inject I/O to underutilized actuators
2023-01-29 15:18:33 -07:00
bio-integrity.c
block: pass struct queue_limits to the bio splitting helpers
2022-08-02 21:08:53 -06:00
bio.c
block: add a BUILD_BUG_ON() for adding more bio flags than we have space
2023-01-29 15:18:33 -07:00
blk-cgroup-fc-appid.c
cgroup: Homogenize cgroup_get_from_id() return value
2022-08-26 10:57:41 -10:00
blk-cgroup-rwstat.c
blk-cgroup: Fix the recursive blkg rwstat
2021-03-05 11:32:15 -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
blk-cgroup: fix missing pd_online_fn() while activating policy
2023-01-16 19:04:07 -07:00
blk-cgroup.h
blk-cgroup: Optimize blkcg_rstat_flush()
2022-11-16 16:58:44 -07:00
blk-core.c
block: Drop spurious might_sleep() from blk_put_queue()
2023-01-08 20:29:28 -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: pass a gendisk to blk_crypto_sysfs_{,un}register
2022-11-30 11:09:00 -07:00
blk-crypto-profile.c
blk-crypto: Add a missing include directive
2022-11-23 10:38:54 -07:00
blk-crypto-sysfs.c
block: untangle request_queue refcounting from sysfs
2022-11-30 11:09:00 -07:00
blk-crypto.c
for-6.2/block-2022-12-08
2022-12-13 10:43:59 -08:00
blk-flush.c
block: change request end_io handler to pass back a return value
2022-09-30 07:49:09 -06:00
blk-ia-ranges.c
block: untangle request_queue refcounting from sysfs
2022-11-30 11:09:00 -07:00
blk-integrity.c
blk-crypto: remove blk_crypto_unregister()
2021-11-29 06:38:51 -07:00
blk-ioc.c
block: fix default IO priority handling again
2022-06-27 06:29:12 -06:00
blk-iocost.c
treewide: Convert del_timer*() to timer_shutdown*()
2022-12-25 13:38:09 -08:00
blk-iolatency.c
treewide: Convert del_timer*() to timer_shutdown*()
2022-12-25 13:38:09 -08:00
blk-ioprio.c
blk-ioprio: pass a gendisk to blk_ioprio_init and blk_ioprio_exit
2022-09-26 19:09:31 -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
block: set FOLL_PCI_P2PDMA in bio_map_user_iov()
2022-11-09 11:29:21 -07:00
blk-merge.c
block: don't allow splitting of a REQ_NOWAIT bio
2023-01-04 13:24:44 -07:00
blk-mq-cpumap.c
block: Change the return type of blk_mq_map_queues() into void
2022-08-22 10:07:53 -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
for-6.1/block-2022-10-03
2022-10-07 09:19:14 -07:00
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
block: Change the return type of blk_mq_map_queues() into void
2022-08-22 10:07:53 -06:00
blk-mq-rdma.c
block: Change the return type of blk_mq_map_queues() into void
2022-08-22 10:07:53 -06:00
blk-mq-sched.c
block: split elevator_switch
2022-11-01 09:12:24 -06:00
blk-mq-sched.h
block: move blk_mq_sched_assign_ioc to blk-ioc.c
2021-11-29 06:41:29 -07:00
blk-mq-sysfs.c
blk-mq: fix possible memleak when register 'hctx' failed
2022-11-25 06:34:03 -07:00
blk-mq-tag.c
sbitmap: fix batched wait_cnt accounting
2022-09-12 00:10:34 -06:00
blk-mq-tag.h
blk-mq: blk_mq_tag_busy is no need to return a value
2022-06-27 06:29:12 -06:00
blk-mq-virtio.c
block: Change the return type of blk_mq_map_queues() into void
2022-08-22 10:07:53 -06:00
blk-mq.c
block: fix hctx checks for batch allocation
2023-01-17 09:56:52 -07:00
blk-mq.h
blk-mq: move the srcu_struct used for quiescing to the tagset
2022-11-02 08:35:34 -06:00
blk-pm.c
scsi: block: pm: Always set request queue runtime active in blk_post_runtime_resume()
2021-12-22 23:38:29 -05:00
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: Use atomic_try_cmpxchg in atomic_inc_below
2022-07-12 14:38:52 -06:00
blk-rq-qos.h
block/blk-rq-qos: delete useless enmu RQ_QOS_IOPRIO
2022-09-21 19:50:53 -06:00
blk-settings.c
block: save user max_sectors limit
2023-01-29 15:18:33 -07:00
blk-stat.c
block: make queue stat accounting a reference
2021-12-14 17:23:05 -07:00
blk-stat.h
block: make queue stat accounting a reference
2021-12-14 17:23:05 -07:00
blk-sysfs.c
block: save user max_sectors limit
2023-01-29 15:18:33 -07:00
blk-throttle.c
blk-throttle: Use more suitable time_after check for update of slice_start
2022-12-05 13:45:31 -07:00
blk-throttle.h
blk-throttle: pass a gendisk to blk_throtl_cancel_bios
2022-09-26 19:17:28 -06:00
blk-timeout.c
block: blk-timeout: delete duplicated word
2020-07-31 16:29:47 -06:00
blk-wbt.c
blk-wbt: don't enable throttling if default elevator is bfq
2022-10-23 18:59:17 -06:00
blk-wbt.h
blk-wbt: don't show valid wbt_lat_usec in sysfs while wbt is disabled
2022-10-23 18:59:17 -06:00
blk-zoned.c
block: adapt blk_mq_plug() to not plug for writes that require a zone lock
2022-09-29 07:45:47 -06:00
blk.h
for-6.2/block-2022-12-08
2022-12-13 10:43:59 -08:00
bounce.c
block: change the blk_queue_bounce calling convention
2022-08-02 17:22:54 -06:00
bsg-lib.c
blk-mq: move the call to blk_put_queue out of blk_mq_destroy_queue
2022-10-25 08:25:10 -06:00
bsg.c
Driver Core changes for 6.2-rc1
2022-12-16 03:54:54 -08:00
disk-events.c
block: remove genhd.h
2022-02-02 07:49:59 -07:00
elevator.c
block: untangle request_queue refcounting from sysfs
2022-11-30 11:09:00 -07:00
elevator.h
block: add proper helpers for elevator_type module refcount management
2022-10-23 18:59:17 -06:00
fops.c
block: don't allow multiple bios for IOCB_NOWAIT issue
2023-01-29 15:18:34 -07:00
genhd.c
block-2023-01-06
2023-01-06 13:12:42 -08:00
holder.c
block: don't allow a disk link holder to itself
2022-11-16 15:19:56 -07:00
ioctl.c
block: Do not reread partition table on exclusively open device
2022-12-01 07:44:03 -07:00
ioprio.c
block: Fix handling of tasks without ioprio in ioprio_get(2)
2022-06-27 06:29:12 -06:00
Kconfig
block: Remove "select SRCU"
2023-01-05 08:50:10 -07:00
Kconfig.iosched
block: only build the icq tracking code when needed
2021-12-16 10:59:02 -07:00
kyber-iosched.c
treewide: Convert del_timer*() to timer_shutdown*()
2022-12-25 13:38:09 -08:00
Makefile
blk-cgroup: move blkcg_{get,set}_fc_appid out of line
2022-05-02 14:06:20 -06:00
mq-deadline.c
block: mq-deadline: Rename deadline_is_seq_writes()
2022-11-28 19:27:45 -07:00
opal_proto.h
block: sed-opal: Add ioctl to return device status
2022-08-22 07:52:51 -06:00
sed-opal.c
for-6.2/block-2022-12-08
2022-12-13 10:43:59 -08:00
t10-pi.c
block: add pi for extended integrity
2022-03-07 12:48:35 -07:00