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Shin'ichiro Kawasaki b53df2e744 block: Fix partition support for host aware zoned block devices 
Commit b72053072c ("block: allow partitions on host aware zone
devices") introduced the helper function disk_has_partitions() to check
if a given disk has valid partitions. However, since this function result
directly depends on the disk partition table length rather than the
actual existence of valid partitions in the table, it returns true even
after all partitions are removed from the disk. For host aware zoned
block devices, this results in zone management support to be kept
disabled even after removing all partitions.

Fix this by changing disk_has_partitions() to walk through the partition
table entries and return true if and only if a valid non-zero size
partition is found.

Fixes: b72053072c ("block: allow partitions on host aware zone devices")
Cc: stable@vger.kernel.org # 5.5
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 		2020-03-12 07:54:39 -06:00
..
partitions partitions/ldm: fix spelling mistake "to" -> "too" 2020-01-23 11:41:45 -07:00
Kconfig block: Allow t10-pi to be modular 2020-01-06 20:59:04 -07:00
Kconfig.iosched blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT 2019-11-07 12:28:13 -07:00
Makefile SCSI misc on 20200129 2020-01-29 18:16:16 -08:00
badblocks.c block: switch all files cleared marked as GPLv2 to SPDX tags 2019-04-30 16:11:57 -06:00
bfq-cgroup.c block, bfq: fix overwrite of bfq_group pointer in bfq_find_set_group() 2020-03-06 07:00:58 -07:00
bfq-iosched.c block, bfq: clarify the goal of bfq_split_bfqq() 2020-02-03 06:58:15 -07:00
bfq-iosched.h block, bfq: get a ref to a group when adding it to a service tree 2020-02-03 06:58:15 -07:00
bfq-wf2q.c block, bfq: get a ref to a group when adding it to a service tree 2020-02-03 06:58:15 -07:00
bio-integrity.c block: fix memleak of bio integrity data 2019-12-05 11:38:36 -07:00
bio.c fs: move guard_bio_eod() after bio_set_op_attrs 2020-01-09 08:16:12 -07:00
blk-cgroup-rwstat.c blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT 2019-11-07 12:28:13 -07:00
blk-cgroup-rwstat.h blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT 2019-11-07 12:28:13 -07:00
blk-cgroup.c blk-cgroup: remove blkcg_drain_queue 2019-12-12 09:26:55 -07:00
blk-core.c block: Remove used kblockd_schedule_work_on() 2020-03-02 07:17:31 -07:00
blk-exec.c block: account statistics for passthrough requests 2019-10-10 17:52:31 -06:00
blk-flush.c blk-mq: insert passthrough request into hctx->dispatch directly 2020-02-24 18:50:48 -07:00
blk-integrity.c block: centralize PI remapping logic to the block layer 2019-09-17 20:03:49 -06:00
blk-ioc.c block: remove the queue_lock indirection 2018-11-15 12:17:28 -07:00
blk-iocost.c blk-iocost: fix incorrect vtime comparison in iocg_is_idle() 2020-03-10 11:37:00 -06:00
blk-iolatency.c blkcg: s/RQ_QOS_CGROUP/RQ_QOS_LATENCY/ 2019-08-28 21:17:08 -06:00
blk-lib.c block: fix 32 bit overflow in __blkdev_issue_discard() 2018-11-14 08:17:18 -07:00
blk-map.c block: fix memleak when __blk_rq_map_user_iov() is failed 2019-12-20 11:52:01 -07:00
blk-merge.c block: fix get_max_segment_size() overflow on 32bit arch 2020-01-14 13:37:40 -07:00
blk-mq-cpumap.c blk-mq: balance mapping between present CPUs and queues 2019-08-04 21:43:12 -06:00
blk-mq-debugfs-zoned.c block: Cleanup license notice 2019-01-17 21:21:40 -07:00
blk-mq-debugfs.c for-5.3/block-20190708 2019-07-09 10:45:06 -07:00
blk-mq-debugfs.h blk-mq: no need to check return value of debugfs_create functions 2019-06-13 03:00:30 -06:00
blk-mq-pci.c block: Fix blk_mq_*_map_queues() kernel-doc headers 2019-05-31 15:12:34 -06:00
blk-mq-rdma.c block: Fix blk_mq_*_map_queues() kernel-doc headers 2019-05-31 15:12:34 -06:00
blk-mq-sched.c blk-mq: insert flush request to the front of dispatch queue 2020-03-12 07:26:12 -06:00
blk-mq-sched.h block: blk-mq: Remove blk_mq_sched_started_request and started_request 2019-07-23 07:25:09 -06:00
blk-mq-sysfs.c blk-mq: make sure that line break can be printed 2019-11-04 07:14:10 -07:00
blk-mq-tag.c blk-mq: Remove some unused function arguments 2020-02-26 10:34:41 -07:00
blk-mq-tag.h blk-mq: Remove some unused function arguments 2020-02-26 10:34:41 -07:00
blk-mq-virtio.c block: Fix blk_mq_*_map_queues() kernel-doc headers 2019-05-31 15:12:34 -06:00
blk-mq.c blk-mq: Remove some unused function arguments 2020-02-26 10:34:41 -07:00
blk-mq.h blk-mq: Remove some unused function arguments 2020-02-26 10:34:41 -07:00
blk-pm.c block: bypass blk_set_runtime_active for uninitialized q->dev 2019-09-12 07:11:56 -06:00
blk-pm.h block: remove the queue_lock indirection 2018-11-15 12:17:28 -07:00
blk-rq-qos.c blk-wbt: fix performance regression in wbt scale_up/scale_down 2019-10-06 09:26:41 -06:00
blk-rq-qos.h blk-rq-qos: fix first node deletion of rq_qos_del() 2019-10-15 10:13:13 -06:00
blk-settings.c block: fix an integer overflow in logical block size 2020-01-15 21:43:09 -07:00
blk-softirq.c block: Don't disable interrupts in trigger_softirq() 2019-11-18 07:29:22 -07:00
blk-stat.c blk-stat: Optimise blk_stat_add() 2019-10-07 21:19:10 -06:00
blk-stat.h block: deactivate blk_stat timer in wbt_disable_default() 2018-12-12 06:47:51 -07:00
blk-sysfs.c block: Remove "dying" checks from sysfs callbacks 2019-10-07 08:31:59 -06:00
blk-throttle.c blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT 2019-11-07 12:28:13 -07:00
blk-timeout.c block: add SPDX tags to block layer files missing licensing information 2019-04-30 16:12:03 -06:00
blk-wbt.c blk-wbt: fix performance regression in wbt scale_up/scale_down 2019-10-06 09:26:41 -06:00
blk-wbt.h block/rq_qos: implement rq_qos_ops->queue_depth_changed() 2019-08-28 21:17:07 -06:00
blk-zoned.c block: mark zone-mgmt bios with REQ_SYNC 2020-01-09 07:59:12 -07:00
blk.h block: Fix a lockdep complaint triggered by request queue flushing 2019-12-20 11:52:01 -07:00
bounce.c block: remove the i argument to bio_for_each_segment_all 2019-04-30 09:26:13 -06:00
bsg-lib.c block: Fix the type of 'sts' in bsg_queue_rq() 2019-12-20 11:52:01 -07:00
bsg.c compat_ioctl: bsg: add handler 2020-01-03 09:33:21 +01:00
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
elevator.c Merge branch 'for-linus' into for-5.5/block 2019-11-07 12:27:19 -07:00
genhd.c block: Fix partition support for host aware zoned block devices 2020-03-12 07:54:39 -06:00
ioctl.c compat_ioctl: simplify up block/ioctl.c 2020-01-03 09:42:52 +01:00
ioprio.c docs: block: convert to ReST 2019-07-15 09:20:27 -03:00
kyber-iosched.c blk-mq: remove blk_mq_put_ctx() 2019-07-02 21:03:27 -06:00
mq-deadline.c block: Introduce elevator features 2019-09-05 19:52:33 -06:00
opal_proto.h block: sed-opal: Introduce SUM_SET_LIST parameter and append it using 'add_token_u64' 2019-11-18 09:49:15 -07:00
partition-generic.c block: allow partitions on host aware zone devices 2020-01-26 09:59:08 -07:00
scsi_ioctl.c compat_ioctl: move CDROM_SEND_PACKET handling into scsi 2020-01-03 09:33:05 +01:00
sed-opal.c block: sed-opal: Introduce SUM_SET_LIST parameter and append it using 'add_token_u64' 2019-11-18 09:49:15 -07:00
t10-pi.c block: Allow t10-pi to be modular 2020-01-06 20:59:04 -07:00