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Mariusz Tkaczyk 9642fa73d0 md: fix for divide error in status_resync 
Stopping external metadata arrays during resync/recovery causes
retries, loop of interrupting and starting reconstruction, until it
hit at good moment to stop completely. While these retries
curr_mark_cnt can be small- especially on HDD drives, so subtraction
result can be smaller than 0. However it is casted to uint without
checking. As a result of it the status bar in /proc/mdstat while stopping
is strange (it jumps between 0% and 99%).

The real problem occurs here after commit 72deb455b5 ("block: remove
CONFIG_LBDAF"). Sector_div() macro has been changed, now the
divisor is casted to uint32. For db = -8 the divisior(db/32-1) becomes 0.

Check if db value can be really counted and replace these macro by
div64_u64() inline.

Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
 		2019-06-18 08:02:25 -07:00
..
bcache bcache: only set BCACHE_DEV_WB_RUNNING when cached device attached 2019-06-13 03:09:15 -06:00
persistent-data treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile dm: add dust target 2019-04-30 16:37:19 -04:00
dm-bio-prison-v1.c
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dm-bio-prison-v1.h
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dm-bio-prison-v2.c
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dm-bio-prison-v2.h
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dm-bio-record.h
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dm-bufio.c dm bufio: Simplify stack trace retrieval 2019-04-29 12:37:52 +02:00
dm-builtin.c
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dm-cache-background-tracker.c
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dm-cache-background-tracker.h
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dm-cache-block-types.h
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dm-cache-metadata.c dm cache metadata: Fix loading discard bitset 2019-04-18 16:18:25 -04:00
dm-cache-metadata.h
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dm-cache-policy-internal.h
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dm-cache-policy-smq.c dm: remove unnecessary unlikely() around WARN_ON_ONCE() 2018-10-16 14:34:59 -04:00
dm-cache-policy.c
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dm-cache-policy.h
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dm-cache-target.c dm cache: add support for discard passdown to the origin device 2019-03-05 14:53:52 -05:00
dm-core.h dm: disable DISCARD if the underlying storage no longer supports it 2019-04-04 15:33:59 -04:00
dm-crypt.c - Improve DM snapshot target's scalability by using finer grained 2019-05-16 15:55:48 -07:00
dm-delay.c dm delay: fix a crash when invalid device is specified 2019-04-26 11:29:32 -04:00
dm-dust.c dm dust: Make dm_dust_init and dm_dust_exit static 2019-05-07 16:05:07 -04:00
dm-era-target.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
dm-exception-store.c
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dm-exception-store.h - Improve DM snapshot target's scalability by using finer grained 2019-05-16 15:55:48 -07:00
dm-flakey.c dm flakey: Properly corrupt multi-page bios. 2018-12-18 09:02:27 -05:00
dm-init.c dm init: fix max devices/targets checks 2019-04-30 16:51:23 -04:00
dm-integrity.c - Improve DM snapshot target's scalability by using finer grained 2019-05-16 15:55:48 -07:00
dm-io.c
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dm-ioctl.c dm ioctl: fix hang in early create error condition 2019-05-16 09:52:06 -04:00
dm-kcopyd.c dm kcopyd: Fix bug causing workqueue stalls 2018-12-18 09:02:26 -05:00
dm-linear.c dm: Check for device sector overflow if CONFIG_LBDAF is not set 2018-12-18 09:02:26 -05:00
dm-log-userspace-base.c
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dm-log-userspace-transfer.c
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dm-log-userspace-transfer.h
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dm-log-writes.c
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dm-log.c
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dm-mpath.c dm mpath: always free attached_handler_name in parse_path() 2019-04-30 16:51:30 -04:00
dm-mpath.h
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dm-path-selector.c
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dm-path-selector.h
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dm-queue-length.c
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dm-raid.c dm: eliminate 'split_discard_bios' flag from DM target interface 2019-02-20 23:24:55 -05:00
dm-raid1.c dm: Check for device sector overflow if CONFIG_LBDAF is not set 2018-12-18 09:02:26 -05:00
dm-region-hash.c
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dm-round-robin.c
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dm-rq.c dm mpath: fix missing call of path selector type->end_io 2019-04-25 15:38:52 -04:00
dm-rq.h dm: remove unused _rq_tio_cache and _rq_cache 2019-03-05 14:48:50 -05:00
dm-service-time.c
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dm-snap-persistent.c
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dm-snap-transient.c
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dm-snap.c dm snapshot: Use fine-grained locking scheme 2019-04-18 16:18:30 -04:00
dm-stats.c mm: convert totalram_pages and totalhigh_pages variables to atomic 2018-12-28 12:11:47 -08:00
dm-stats.h
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dm-stripe.c
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dm-switch.c dm switch: use struct_size() in kzalloc() 2019-03-05 14:48:51 -05:00
dm-sysfs.c dm: remove legacy request-based IO path 2018-10-11 11:36:09 -04:00
dm-table.c dax: Arrange for dax_supported check to span multiple devices 2019-05-20 15:02:08 -07:00
dm-target.c dm mpath: fix missing call of path selector type->end_io 2019-04-25 15:38:52 -04:00
dm-thin-metadata.c dm thin metadata: do not write metadata if no changes occurred 2019-04-18 16:18:34 -04:00
dm-thin-metadata.h dm thin: fix passdown_double_checking_shared_status() 2019-01-15 16:10:41 -05:00
dm-thin.c dm thin: add sanity checks to thin-pool and external snapshot creation 2019-03-05 14:53:49 -05:00
dm-uevent.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
dm-uevent.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
dm-unstripe.c dm: Check for device sector overflow if CONFIG_LBDAF is not set 2018-12-18 09:02:26 -05:00
dm-verity-fec.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dm-verity-fec.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dm-verity-target.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
dm-verity.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
dm-writecache.c dm writecache: avoid unnecessary lookups in writecache_find_entry() 2019-04-26 11:48:03 -04:00
dm-zero.c
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dm-zoned-metadata.c dm zoned: Fix zone report handling 2019-04-18 16:17:58 -04:00
dm-zoned-reclaim.c
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dm-zoned-target.c dm zoned: Silence a static checker warning 2019-04-18 16:16:01 -04:00
dm-zoned.h
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dm.c libnvdimm fixes v5.2-rc2 2019-05-25 10:11:23 -07:00
dm.h dax: Arrange for dax_supported check to span multiple devices 2019-05-20 15:02:08 -07:00
md-bitmap.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
md-bitmap.h
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md-cluster.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 45 2019-05-24 17:27:12 +02:00
md-cluster.h md-cluster: introduce resync_info_get interface for sanity check 2018-10-18 09:36:35 -07:00
md-faulty.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
md-linear.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
md-linear.h
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md-multipath.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
md-multipath.h
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md.c md: fix for divide error in status_resync 2019-06-18 08:02:25 -07:00
md.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
raid0.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
raid0.h
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raid1-10.c
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raid1.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
raid1.h
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raid5-cache.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
raid5-log.h raid5: set write hint for PPL 2019-03-12 10:15:18 -07:00
raid5-ppl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
raid5.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
raid5.h md: convert to kvmalloc 2019-03-12 10:04:02 -07:00
raid10.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
raid10.h
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