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4c856fb333ac57d9b4a6ddd44407fd022a702f00
mirror_zfs/module/zfs
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Richard Yao 4c856fb333 Fix data race between zil_commit() and zil_suspend() 
openzfsonwindows/openzfs#206 found that it is possible to trip
`VERIFY(list_is_empty(&lwb->lwb_itxs))` when a `zil_commit()` is delayed
by the scheduler long enough for a parallel `zil_suspend()` operation to
exit `zil_commit_impl()`. This is a data race. To prevent this, we
introduce a `zilog->zl_suspend_lock` rwlock to ensure that all
outstanding `zil_commit()` operations finish before `zil_suspend()`
begins and that subsequent operations fallback to `txg_wait_synced()`
after `zil_suspend()` has begun.

On `PREEMPT_RT` Linux kernels, the `rw_enter()` implementation suffers
from writer starvation. This means that a ZIL intensive system can delay
`zil_suspend()` indefinitely. This is a pre-existing problem that
affects everything that uses rw locks, so it needs to be addressed in
the SPL.  However, builds against `PREEMPT_RT` Linux kernels are
currently broken due to a GPL symbol issue (#11097), so we can safely
disregard that issue for now.

Reported-by: Arun KV <arun.kv@datacore.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14514
2023-03-01 13:23:09 -08:00
..
abd.c
abd_return_buf() should call zfs_refcount_remove_many() early
2022-10-19 17:11:01 -07:00
aggsum.c
Remove bcopy(), bzero(), bcmp()
2022-03-15 15:13:42 -07:00
arc.c
Skip memory allocation when compressing holes
2023-02-27 14:41:02 -08:00
blake3_zfs.c
Cleanup: Use NULL when doing NULL pointer comparisons
2023-01-12 16:00:37 -08:00
blkptr.c
Remove bcopy(), bzero(), bcmp()
2022-03-15 15:13:42 -07:00
bplist.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
bpobj.c
Prefetch on deadlists merge
2023-01-25 11:30:24 -08:00
bptree.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
bqueue.c
Batch enqueue/dequeue for bqueue
2023-01-10 13:39:22 -08:00
btree.c
Optimize microzaps
2022-10-20 11:57:15 -07:00
dataset_kstats.c
Introduce kmem_scnprintf()
2022-10-29 13:05:11 -07:00
dbuf_stats.c
Revert "Reduce dbuf_find() lock contention"
2022-09-22 12:59:41 -07:00
dbuf.c
Suppress static analyzer warning in dbuf_hold_copy()
2023-02-28 17:31:50 -08:00
ddt_zap.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
ddt.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
dmu_diff.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
dmu_object.c
zfs redact fails when dnodesize=auto
2023-02-16 09:23:39 -08:00
dmu_objset.c
Suppress static analyzer warning in dmu_objset_create_impl_dnstats()
2023-02-28 17:31:58 -08:00
dmu_recv.c
Skip memory allocation when compressing holes
2023-02-27 14:41:02 -08:00
dmu_redact.c
Fix incorrect size given to bqueue_enqueue() call in dmu_redact.c
2022-09-15 16:21:21 -07:00
dmu_send.c
Give strlcat() full buffer lengths rather than smaller buffer lengths
2023-02-14 11:03:42 -08:00
dmu_traverse.c
arc_read()/arc_access() refactoring and cleanup
2022-12-22 12:10:24 -08:00
dmu_tx.c
Add tunable to allow changing micro ZAP's max size
2023-01-10 13:41:54 -08:00
dmu_zfetch.c
arc_read()/arc_access() refactoring and cleanup
2022-12-22 12:10:24 -08:00
dmu.c
Use rw_tryupgrade() in dmu_bonus_hold_by_dnode()
2023-02-22 16:33:23 -08:00
dnode_sync.c
free_blocks(): Fix reports from 2016 PVS Studio FreeBSD report
2023-01-23 13:12:37 -08:00
dnode.c
Turn default_bs and default_ibs into ZFS_MODULE_PARAMs
2023-01-11 09:38:20 -08:00
dsl_bookmark.c
Cleanup: Address Clang's static analyzer's unused code complaints
2022-10-14 13:37:54 -07:00
dsl_crypt.c
Move dmu_buf_rele() after dsl_dataset_sync_done()
2023-02-23 18:14:52 -07:00
dsl_dataset.c
Revert zfeature_active() to static
2023-02-28 14:03:52 -08:00
dsl_deadlist.c
Move zap_attribute_t to the heap in dsl_deadlist_merge
2023-02-27 14:27:58 -08:00
dsl_deleg.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
dsl_destroy.c
Prevent zevent list from consuming all of kernel memory
2022-08-22 12:36:22 -07:00
dsl_dir.c
Cleanup ->dd_space_towrite should be unsigned
2023-01-20 11:10:15 -08:00
dsl_pool.c
Move dmu_buf_rele() after dsl_dataset_sync_done()
2023-02-23 18:14:52 -07:00
dsl_prop.c
Micro-optimize dsl_prop_get_dd()
2023-01-20 11:01:41 -08:00
dsl_scan.c
Partially revert eee9362a7
2023-02-21 09:36:22 -08:00
dsl_synctask.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
dsl_userhold.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
edonr_zfs.c
Remove bcopy(), bzero(), bcmp()
2022-03-15 15:13:42 -07:00
fm.c
Cleanup of dead code suggested by Clang Static Analyzer (#14380)
2023-01-17 09:57:12 -08:00
gzip.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
hkdf.c
Remove bcopy(), bzero(), bcmp()
2022-03-15 15:13:42 -07:00
lz4_zfs.c
Updated the lz4 decompressor
2022-01-07 10:36:49 -08:00
lz4.c
lz4: Cherrypick fix for CVE-2021-3520
2022-01-12 16:14:36 -08:00
lzjb.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
metaslab.c
Bypass metaslab throttle for removal allocations
2022-12-09 10:48:33 -08:00
mmp.c
Cleanup: Address Clang's static analyzer's unused code complaints
2022-10-14 13:37:54 -07:00
multilist.c
Cleanup: Specify unsignedness on things that should not be signed
2022-09-27 16:42:41 -07:00
objlist.c
Implement Redacted Send/Receive
2019-06-19 09:48:12 -07:00
pathname.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
range_tree.c
Add defensive assertions
2022-10-12 11:25:18 -07:00
refcount.c
Cleanup: Specify unsignedness on things that should not be signed
2022-09-27 16:42:41 -07:00
rrwlock.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
sa.c
Suppress static analyzer warning in sa_attr_iter()
2023-02-28 17:31:30 -08:00
sha256.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
skein_zfs.c
Remove bcopy(), bzero(), bcmp()
2022-03-15 15:13:42 -07:00
spa_checkpoint.c
Cleanup: 64-bit kernel module parameters should use fixed width types
2022-10-13 10:03:29 -07:00
spa_config.c
zed: add hotplug support for spare vdevs
2023-01-09 12:43:03 -08:00
spa_errlog.c
deadlock between spa_errlog_lock and dp_config_rwlock
2022-12-22 11:48:49 -08:00
spa_history.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
spa_log_spacemap.c
Address warnings about possible division by zero from clangsa
2022-11-03 09:58:14 -07:00
spa_misc.c
Improve resilver ETAs
2023-01-25 11:28:54 -08:00
spa_stats.c
Cleanup: Specify unsignedness on things that should not be signed
2022-09-27 16:42:41 -07:00
spa.c
Sync thread should avoid holding the spa config write lock when possible
2023-02-16 14:10:52 -08:00
space_map.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
space_reftree.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
THIRDPARTYLICENSE.cityhash
OpenZFS 8484 - Implement aggregate sum and use for arc counters
2018-06-06 09:35:59 -07:00
THIRDPARTYLICENSE.cityhash.descrip
OpenZFS 8484 - Implement aggregate sum and use for arc counters
2018-06-06 09:35:59 -07:00
txg.c
Fix the last two CFI callback prototype mismatches
2022-11-29 09:56:16 -08:00
uberblock.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
unique.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
vdev_cache.c
Cleanup: Specify unsignedness on things that should not be signed
2022-09-27 16:42:41 -07:00
vdev_draid_rand.c
Distributed Spare (dRAID) Feature
2020-11-13 13:51:51 -08:00
vdev_draid.c
vdev_draid_lookup_map() should not iterate outside draid_maps
2022-09-12 12:51:17 -07:00
vdev_indirect_births.c
Remove bcopy(), bzero(), bcmp()
2022-03-15 15:13:42 -07:00
vdev_indirect_mapping.c
Remove bcopy(), bzero(), bcmp()
2022-03-15 15:13:42 -07:00
vdev_indirect.c
Cleanup: Replace oldstyle struct hack with C99 flexible array members
2023-01-12 16:00:03 -08:00
vdev_initialize.c
Cleanup: 64-bit kernel module parameters should use fixed width types
2022-10-13 10:03:29 -07:00
vdev_label.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
vdev_mirror.c
Improve too large physical ashift handling
2022-09-08 10:30:53 -07:00
vdev_missing.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
vdev_queue.c
Convert enum zio_flag to uint64_t
2022-10-27 09:54:54 -07:00
vdev_raidz_math_aarch64_neon_common.h
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
vdev_raidz_math_aarch64_neon.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
vdev_raidz_math_aarch64_neonx2.c
Fix Clang 15 compilation errors
2022-11-30 13:46:26 -08:00
vdev_raidz_math_avx2.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
vdev_raidz_math_avx512bw.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
vdev_raidz_math_avx512f.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
vdev_raidz_math_impl.h
Cleanup Raid-Z Typo fixes
2022-09-06 09:43:21 -07:00
vdev_raidz_math_powerpc_altivec_common.h
Linux ppc64le ieee128 compat: Do not redefine __asm on external headers
2023-01-13 10:58:58 -08:00
vdev_raidz_math_powerpc_altivec.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
vdev_raidz_math_scalar.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
vdev_raidz_math_sse2.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
vdev_raidz_math_ssse3.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
vdev_raidz_math.c
Convert some sprintf() calls to kmem_scnprintf()
2022-11-28 13:49:58 -08:00
vdev_raidz.c
Bump checksum error counter before reporting to ZED
2022-12-02 17:42:22 -08:00
vdev_rebuild.c
Increase default zfs_rebuild_vdev_limit to 64MB
2023-01-27 10:02:24 -08:00
vdev_removal.c
Bypass metaslab throttle for removal allocations
2022-12-09 10:48:33 -08:00
vdev_root.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
vdev_trim.c
Propagate extent_bytes change to autotrim thread
2022-10-28 10:16:31 -07:00
vdev.c
Configure zed's diagnosis engine with vdev properties
2023-01-23 13:14:25 -08:00
zap_leaf.c
Optimize microzaps
2022-10-20 11:57:15 -07:00
zap_micro.c
Add tunable to allow changing micro ZAP's max size
2023-01-10 13:41:54 -08:00
zap.c
Cleanup: Use NULL when doing NULL pointer comparisons
2023-01-12 16:00:37 -08:00
zcp_get.c
Cleanup: Address Clang's static analyzer's unused code complaints
2022-10-14 13:37:54 -07:00
zcp_global.c
OpenZFS 8600 - ZFS channel programs - snapshot
2018-02-08 15:29:24 -08:00
zcp_iter.c
module/*.ko: prune .data, global .rodata
2022-01-14 15:37:55 -08:00
zcp_set.c
Support setting user properties in a channel program
2020-02-14 13:41:42 -08:00
zcp_synctask.c
Add zfs.sync.snapshot_rename
2022-09-02 13:31:19 -07:00
zcp.c
ztest: update ztest_dmu_snapshot_create_destroy()
2023-01-10 13:27:48 -08:00
zfeature.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
zfs_byteswap.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
zfs_chksum.c
Cleanup: Remove unnecessary explicit casts of pointers from allocators
2023-01-12 15:59:12 -08:00
zfs_fm.c
Configure zed's diagnosis engine with vdev properties
2023-01-23 13:14:25 -08:00
zfs_fuid.c
Cleanup: Remove unneeded semicolons
2023-01-12 16:00:30 -08:00
zfs_ioctl.c
Remove bad kmem_free() oversight from previous zfsdev_state_list patch
2023-03-01 13:20:53 -08:00
zfs_log.c
zfs_rename: support RENAME_* flags
2022-10-28 09:49:20 -07:00
zfs_onexit.c
zfs_onexit_add_cb: make action_handle point to a uintptr_t
2022-11-03 09:52:12 -07:00
zfs_quota.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
zfs_ratelimit.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
zfs_replay.c
Suppress Clang static analyzer complaint in zfs_replay_create()
2023-02-14 11:05:41 -08:00
zfs_rlock.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
zfs_sa.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
zfs_vnops.c
Linux: use filemap_range_has_page()
2023-02-14 11:04:34 -08:00
zil.c
Fix data race between zil_commit() and zil_suspend()
2023-03-01 13:23:09 -08:00
zio_checksum.c
Suppress static analyzer warnings in zio_checksum_error_impl()
2023-02-28 17:31:08 -08:00
zio_compress.c
Skip memory allocation when compressing holes
2023-02-27 14:41:02 -08:00
zio_inject.c
Cleanup: Switch to strlcpy from strncpy
2022-09-27 16:35:29 -07:00
zio.c
Skip memory allocation when compressing holes
2023-02-27 14:41:02 -08:00
zle.c
Replace dead opensolaris.org license link
2022-07-11 14:16:13 -07:00
zrlock.c
Micro-optimize zrl_remove()
2022-11-29 09:26:03 -08:00
zthr.c
Switch from _Noreturn to __attribute__((noreturn))
2022-03-23 08:51:00 -07:00
zvol.c
Cleanup of dead code suggested by Clang Static Analyzer (#14380)
2023-01-17 09:57:12 -08:00