Maciej S. Szmigiero fc8ebd01de block, bfq: return nbytes and not zero from struct cftype .write() method ...

The value that struct cftype .write() method returns is then directly
returned to userspace as the value returned by write() syscall, so it
should be the number of bytes actually written (or consumed) and not zero.

Returning zero from write() syscall makes programs like /bin/echo or bash
spin.

Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Fixes: e21b7a0b9887 ("block, bfq: add full hierarchical scheduling and cgroups support")
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2018-08-16 13:11:16 -06:00

..

partitions

partitions/aix: append null character to print data from disk

2018-07-27 09:17:41 -06:00

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: return nbytes and not zero from struct cftype .write() method

2018-08-16 13:11:16 -06:00

bfq-iosched.c

block, bfq: reduce write overcharge

2018-08-16 13:08:13 -06:00

bfq-iosched.h

block, bfq: add/remove entity weights correctly

2018-07-09 09:07:52 -06:00

bfq-wf2q.c

block, bfq: improve code of bfq_bfqq_charge_time

2018-08-16 13:08:15 -06:00

bio-integrity.c

block: move bio_integrity_{intervals,bytes} into blkdev.h

2018-07-26 15:49:41 -06:00

bio.c

block: bvec_nr_vecs() returns value for wrong slab

2018-08-09 08:25:04 -06:00

blk-cgroup.c

blk-cgroup: hold the queue ref during throttling

2018-08-01 09:16:03 -06:00

blk-core.c

block: don't warn for flush on read-only device

2018-08-14 10:52:40 -06:00

blk-exec.c

blk-mq-sched: remove unused 'can_block' arg from blk_mq_sched_insert_request

2018-01-17 09:49:21 -07:00

blk-flush.c

block: fix use-after-free in block flush handling

2018-06-09 06:37:14 -06:00

blk-integrity.c

block drivers/block: Use octal not symbolic permissions

2018-05-24 13:38:59 -06:00

blk-ioc.c

block, mm: remove unnecessary __GFP_HIGH flag

2018-07-09 09:07:54 -06:00

blk-iolatency.c

block: make iolatency avg_lat exponentially decay

2018-08-02 09:58:14 -06:00

blk-lib.c

block: fix infinite loop if the device loses discard capability

2018-07-09 09:07:54 -06:00

blk-map.c

Merge branch 'for-4.16/block' of git://git.kernel.dk/linux-block

2018-01-29 11:51:49 -08:00

blk-merge.c

block: don't use blocking queue entered for recursive bio submits

2018-06-02 20:35:00 -06:00

blk-mq-cpumap.c

blk-mq: don't keep offline CPUs mapped to hctx 0

2018-04-10 08:38:46 -06:00

blk-mq-debugfs-zoned.c

block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n

2018-07-09 09:07:52 -06:00

blk-mq-debugfs.c

blk-mq: dequeue request one by one from sw queue if hctx is busy

2018-07-09 09:07:53 -06:00

blk-mq-debugfs.h

block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n

2018-07-09 09:07:52 -06:00

blk-mq-pci.c

blk-mq: code clean-up by adding an API to clear set->mq_map

2018-07-09 09:07:53 -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: issue directly if hw queue isn't busy in case of 'none'

2018-07-17 16:04:00 -06:00

blk-mq-sched.h

block: move sysfs_lock into elevator_init

2018-06-01 07:38:19 -06:00

blk-mq-sysfs.c

block drivers/block: Use octal not symbolic permissions

2018-05-24 13:38:59 -06:00

blk-mq-tag.c

blk-mq: count the hctx as active before allocating tag

2018-08-09 08:34:17 -06:00

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

blk-mq: count the hctx as active before allocating tag

2018-08-09 08:34:17 -06:00

blk-mq.h

blk-mq: issue directly if hw queue isn't busy in case of 'none'

2018-07-17 16:04:00 -06:00

blk-rq-qos.c

blk-rq-qos: make depth comparisons unsigned

2018-07-22 11:30:53 -06:00

blk-rq-qos.h

blk-rq-qos: make depth comparisons unsigned

2018-07-22 11:30:53 -06:00

blk-settings.c

block: allow max_discard_segments to be stacked

2018-07-24 14:46:39 -06:00

blk-softirq.c

block: fix timeout changes for legacy request drivers

2018-06-19 11:27:18 -06:00

blk-stat.c

blk-stat: export helpers for modifying blk_rq_stat

2018-07-09 09:07:54 -06:00

blk-stat.h

blk-stat: export helpers for modifying blk_rq_stat

2018-07-09 09:07:54 -06:00

blk-sysfs.c

blkcg: Make blkg_root_lookup() work for queues in bypass mode

2018-08-11 15:41:25 -06:00

blk-tag.c

for-linus-20180616

2018-06-17 05:37:55 +09:00

blk-throttle.c

Blk-throttle: reduce tail io latency when iops limit is enforced

2018-08-09 12:43:16 -06:00

blk-timeout.c

blk-mq: Fix timeout handling in case the timeout handler returns BLK_EH_DONE

2018-06-23 10:25:45 -06:00

blk-wbt.c

blk-wbt: fix IO hang in wbt_wait()

2018-08-14 11:05:52 -06:00

blk-wbt.h

block: remove external dependency on wbt_flags

2018-07-09 09:07:54 -06:00

blk-zoned.c

block: Remove a superfluous cast from blkdev_report_zones()

2018-07-09 09:07:52 -06:00

blk.h

block: Introduce blk_exit_queue()

2018-08-09 09:12:59 -06:00

bounce.c

block: unexport bio_clone_bioset

2018-07-24 14:43:26 -06:00

bsg-lib.c

block/bsg-lib: use PTR_ERR_OR_ZERO to simplify the flow path

2018-08-01 09:13:03 -06:00

bsg.c

Linux 4.18-rc6

2018-08-05 19:32:09 -06:00

cfq-iosched.c

cfq: Suppress compiler warnings about comparisons

2018-08-07 17:57:13 -06:00

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 drivers/block: Use octal not symbolic permissions

2018-05-24 13:38:59 -06:00

elevator.c

block: split the blk-mq case from elevator_init

2018-06-01 07:38:21 -06:00

genhd.c

block: Track DISCARD statistics and output them in stat and diskstat

2018-07-18 08:44:22 -06:00

ioctl.c

block: pass inclusive 'lend' parameter to truncate_inode_pages_range

2018-02-23 15:20:19 -07:00

ioprio.c

block: add ioprio_check_cap function

2018-05-31 10:50:54 -04:00

Kconfig

block: introduce blk-iolatency io controller

2018-07-09 09:07:54 -06:00

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

block: kyber: make kyber more friendly with merging

2018-05-30 10:47:40 -06:00

Makefile

block: introduce blk-iolatency io controller

2018-07-09 09:07:54 -06:00

mq-deadline.c

block drivers/block: Use octal not symbolic permissions

2018-05-24 13:38:59 -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

block: Track DISCARD statistics and output them in stat and diskstat

2018-07-18 08:44:22 -06:00

scsi_ioctl.c

block: consistently use GFP_NOIO instead of __GFP_NORECLAIM

2018-05-14 08:55:18 -06:00

sed-opal.c

block: sed-opal: Fix a couple off by one bugs

2018-06-20 12:04:06 -06:00

t10-pi.c

block: move dif_prepare/dif_complete functions to block layer

2018-07-30 08:27:02 -06:00