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162eb5ba791f6260fdaabae75fa2df20134f67d8
linux/drivers/md
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Yunye Zhao 162eb5ba79 md: add cond_resched() to md_do_sync()'s skip path 
When sync_request() reports a skipped region (*skipped == 1),
md_do_sync()'s main loop advances the cursor and takes an early
continue:

	j += sectors;
	...
	if (last_check + window > io_sectors || j == max_sectors)
		continue;

If the personality returns a small span per call (raid10 recovery
returns only 128 sectors), syncing a large, mostly clean array iterates
this branch an enormous number of times without ever yielding the CPU.
On a non-preemptive kernel the resync thread then trips the soft-lockup
watchdog:

  watchdog: BUG: soft lockup - CPU#149 stuck for 313s! [mdX_resync]
   md_bitmap_start_sync+0x6f/0xe0
   raid10_sync_request+0x2c9/0x1530 [raid10]
   md_do_sync+0x810/0x1030
   md_thread+0xa7/0x150

Add a cond_resched().  This does not reduce the wasted iterations; the
excessive iteration count is a raid10 problem addressed separately.

Signed-off-by: Yunye Zhao <yunye.zhao@linux.alibaba.com>
Link: https://patch.msgid.link/20260723135535.101995-3-yunye.zhao@linux.alibaba.com
Signed-off-by: Yu Kuai <yukuai@fygo.io>
2026-08-07 16:10:39 +08:00
..
bcache
bcache: fix uninitialized closure object
2026-04-03 05:11:08 -06:00
dm-pcache
dm-pcache: reject option groups without values
2026-07-08 22:33:34 +02:00
dm-vdo
Merge tag 'for-7.2/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
2026-06-16 13:20:54 +05:30
persistent-data
dm-thin: fix metadata refcount underflow
2026-04-20 19:56:44 +02:00
dm-audit.c
dm: add missing SPDX-License-Indentifiers
2023-02-14 14:23:06 -05:00
dm-audit.h
dm: introduce audit event module for device mapper
2021-10-27 16:53:47 -04:00
dm-bio-prison-v1.c
Convert 'alloc_flex' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-bio-prison-v1.h
dm cache: Remove unused functions in bio-prison-v1
2024-11-20 11:38:04 +01:00
dm-bio-prison-v2.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-bio-prison-v2.h
dm: change "unsigned" to "unsigned int"
2023-02-14 14:23:06 -05:00
dm-bio-record.h
dm: add missing SPDX-License-Indentifiers
2023-02-14 14:23:06 -05:00
dm-bufio.c
dm-bufio: fix wrong count calculation in dm_bufio_issue_discard
2026-07-10 18:39:17 +02:00
dm-builtin.c
dm: adjust EXPORT_SYMBOL() to follow functions immediately
2023-02-14 14:23:07 -05:00
dm-cache-background-tracker.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-cache-background-tracker.h
dm cache: Remove unused btracker_nr_writebacks_queued
2024-11-20 11:38:04 +01:00
dm-cache-block-types.h
dm: add missing SPDX-License-Indentifiers
2023-02-14 14:23:06 -05:00
dm-cache-metadata.c
dm cache metadata: fix memory leak on metadata abort retry
2026-03-09 14:53:39 +01:00
dm-cache-metadata.h
dm cache: prevent entering passthrough mode after unclean shutdown
2026-03-02 16:50:18 +01:00
dm-cache-policy-internal.h
dm: add missing empty lines
2023-02-14 14:23:06 -05:00
dm-cache-policy-smq.c
Merge tag 'for-7.2/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
2026-06-16 13:20:54 +05:30
dm-cache-policy.c
dm: change "unsigned" to "unsigned int"
2023-02-14 14:23:06 -05:00
dm-cache-policy.h
dm: address indent/space issues
2023-02-14 14:23:06 -05:00
dm-cache-target.c
dm cache: fix missing return in invalidate_committed's error path
2026-04-10 15:16:06 +02:00
dm-clone-metadata.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-clone-metadata.h
dm clone metadata: Fix return type of dm_clone_nr_of_hydrated_regions()
2020-03-27 14:42:51 -04:00
dm-clone-target.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-core.h
Revert "dm: fix a race condition in retrieve_deps"
2026-01-28 15:44:02 +01:00
dm-crypt.c
dm-crypt: Make crypt_iv_operations::post return void
2026-03-30 12:06:33 +02:00
dm-delay.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-dust.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-ebs-target.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-era-target.c
dm era: fix error code propagation in era_ctr()
2026-07-08 22:33:35 +02:00
dm-exception-store.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-exception-store.h
dm-snapshot: fix 'scheduling while atomic' on real-time kernels
2025-12-10 19:28:22 +01:00
dm-flakey.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-ima.c
dm-ima: use active table's size if available
2026-05-04 14:53:52 +02:00
dm-ima.h
dm-ima: use active table's size if available
2026-05-04 14:53:52 +02:00
dm-init.c
dm init: ensure device probing has finished in dm-mod.waitfor=
2026-03-18 15:36:33 +01:00
dm-inlinecrypt.c
dm-inlinecrypt: Fix an error handling path in inlinecrypt_ctr()
2026-07-08 22:33:35 +02:00
dm-integrity.c
dm-integrity: fix a bug if the bio is out of limits
2026-07-10 14:39:47 +02:00
dm-io-rewind.c
dm: avoid void function return statements
2023-02-14 14:23:07 -05:00
dm-io-tracker.h
dm: add missing SPDX-License-Indentifiers
2023-02-14 14:23:06 -05:00
dm-io.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-ioctl.c
dm-ioctl: fix a possible overflow in list_version_get_info
2026-07-10 14:40:51 +02:00
dm-kcopyd.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-linear.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-log-userspace-base.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-log-userspace-transfer.c
dm: avoid split of quoted strings where possible
2023-02-14 14:23:07 -05:00
dm-log-userspace-transfer.h
dm: add missing SPDX-License-Indentifiers
2023-02-14 14:23:06 -05:00
dm-log-writes.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-log.c
dm-log: fix a bitset_size overflow on 32bit machines
2026-07-08 22:33:20 +02:00
dm-mpath.c
dm-mpath: don't stop probing paths at presuspend
2026-03-02 16:54:36 +01:00
dm-mpath.h
dm: change "unsigned" to "unsigned int"
2023-02-14 14:23:06 -05:00
dm-path-selector.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-path-selector.h
dm-mpath: make dm_unregister_path_selector return void
2025-06-30 16:20:04 +02:00
dm-ps-historical-service-time.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-ps-io-affinity.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-ps-queue-length.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-ps-round-robin.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-ps-service-time.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-raid1.c
dm mirror: fix integer overflow in create_dirty_log()
2026-03-02 18:43:12 +01:00
dm-raid.c
dm-raid: only requeue bios when dm is suspending
2026-05-31 19:09:17 +08:00
dm-region-hash.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-rq.c
block: switch numa_node to int in blk_mq_hw_ctx and init_request
2026-05-26 11:01:55 -06:00
dm-rq.h
dm: change "unsigned" to "unsigned int"
2023-02-14 14:23:06 -05:00
dm-snap-persistent.c
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
dm-snap-transient.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-snap.c
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
dm-stats.c
dm-stats: fix dm_jiffies_to_msec64
2026-07-10 18:40:27 +02:00
dm-stats.h
dm stats: check for and propagate alloc_percpu failure
2023-03-16 13:37:06 -04:00
dm-stripe.c
Convert 'alloc_flex' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-switch.c
Convert 'alloc_flex' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-sysfs.c
dm: sysfs: use sysfs_emit() in dm-sysfs.c
2025-10-20 15:22:21 +02:00
dm-table.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-target.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-thin-metadata.c
dm thin metadata: fix superblock refcount leak on snapshot shadow failure
2026-07-11 15:18:51 +02:00
dm-thin-metadata.h
dm: add missing SPDX-License-Indentifiers
2023-02-14 14:23:06 -05:00
dm-thin.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-uevent.c
dm: avoid spaces before function arguments or in favour of tabs
2023-02-14 14:23:06 -05:00
dm-uevent.h
dm: fix undue/missing spaces
2023-02-14 14:23:06 -05:00
dm-unstripe.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-verity-fec.c
dm-verity: fix buffer overflow in FEC calculation
2026-07-08 22:33:34 +02:00
dm-verity-fec.h
dm-verity: fix buffer overflow in FEC calculation
2026-07-08 22:33:34 +02:00
dm-verity-loadpin.c
dm-verity: fix a possible NULL pointer dereference
2026-07-10 14:41:43 +02:00
dm-verity-target.c
dm-verity: make error counter atomic
2026-07-10 14:42:33 +02:00
dm-verity-verify-sig.c
dm-verity: fix section mismatch error
2026-01-21 14:06:23 +01:00
dm-verity-verify-sig.h
dm-verity: fix section mismatch error
2026-01-21 14:06:23 +01:00
dm-verity.h
dm-verity: make error counter atomic
2026-07-10 14:42:33 +02:00
dm-writecache.c
dm: provide helper to set stacked limits
2026-03-27 22:19:17 +01:00
dm-zero.c
dm: always manage discard support in terms of max_hw_discard_sectors
2024-05-20 15:51:19 -04:00
dm-zone.c
dm: use READ_ONCE in dm_blk_report_zones
2026-01-14 13:12:21 +01:00
dm-zoned-metadata.c
dm-zoned-metadata: Use strscpy() to copy device name
2026-06-08 14:59:14 +02:00
dm-zoned-reclaim.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-zoned-target.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dm-zoned.h
dm: zoned: Remove unused functions
2024-11-20 11:38:04 +01:00
dm.c
dm: avoid leaking the caller's thread keyring via the table device file
2026-07-08 22:33:35 +02:00
dm.h
block: introduce disk_report_zone()
2025-11-05 08:07:21 -07:00
Kconfig
dm-inlinecrypt: add target for inline block device encryption
2026-05-12 12:58:13 +02:00
Makefile
dm-inlinecrypt: add target for inline block device encryption
2026-05-12 12:58:13 +02:00
md-autodetect.c
md: reintroduce md-linear
2025-01-13 07:36:29 -08:00
md-bitmap.c
md/md-llbitmap: add reshape range mapping helpers
2026-08-07 14:43:35 +08:00
md-bitmap.h
md/md-llbitmap: add reshape range mapping helpers
2026-08-07 14:43:35 +08:00
md-cluster.c
Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses
2026-02-22 08:26:33 -08:00
md-cluster.h
md: switch md-cluster to use md_submodle_head
2025-03-05 00:28:39 +08:00
md-linear.c
md: remove REQ_NOWAIT support from raid1/10/456
2026-07-30 18:46:32 +08:00
md-llbitmap.c
md/md-llbitmap: clamp state-machine walks to tracked bits
2026-08-07 14:43:35 +08:00
md.c
md: add cond_resched() to md_do_sync()'s skip path
2026-08-07 16:10:39 +08:00
md.h
md: add exact bitmap mapping and reshape hooks
2026-08-07 14:43:34 +08:00
raid0.c
md: remove REQ_NOWAIT support from raid1/10/456
2026-07-30 18:46:32 +08:00
raid0.h
md/raid0: add discard support for the 'original' layout
2023-06-30 15:43:50 -07:00
raid1-10.c
md: remove REQ_NOWAIT support from raid1/10/456
2026-07-30 18:46:32 +08:00
raid1.c
md/raid1: restrict atomic write limits and handle runtime constraints
2026-07-30 23:30:03 +08:00
raid1.h
md: remove recovery_disabled
2026-01-26 13:17:38 +08:00
raid5-cache.c
md/raid5: validate payload size before accessing journal metadata
2026-04-07 13:09:22 +08:00
raid5-log.h
md/raid5-ppl: Drop unused argument from ppl_handle_flush_request()
2022-08-02 17:14:31 -06:00
raid5-ppl.c
md/raid5-ppl: fix use-after-free in ppl_do_flush()
2026-07-30 16:05:16 +08:00
raid5.c
md/raid5: split reshape bios before bitmap accounting
2026-08-07 14:43:36 +08:00
raid5.h
md/raid5: validate discard support at request time
2026-06-21 03:16:24 +08:00
raid10.c
md/raid10: fix still_degraded being inverted in raid10_sync_request()
2026-08-07 15:25:32 +08:00
raid10.h
md/raid10: resize r10bio_pool for reshape
2026-07-31 05:40:46 +08:00