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62ca8f721b
mirror_zfs/module/zfs
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Ameer Hamza 62ca8f721b L2ARC: Scan-based depth cap for persistent markers 
With persistent markers and inclusive scanning, the marker traverses the
entire ARC state across many feed cycles, writing buffers far from the
tail that may no longer be relevant.

Track cumulative bytes scanned per pass in l2arc_ext_scanned. When scans
reach l2arc_ext_headroom_pct (default 25%) of the ARC state size, reset
the pass markers to the tail via lazy reset flags. This keeps markers
focused on the tail zone where buffers soon to be evicted have the most
value for L2ARC.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #18289
2026-03-10 11:00:08 -07:00
..
abd.c Preserve LIFO ordering of kmap ops in abd_raidz_gen_iterate() 2025-12-09 09:12:16 -08:00
aggsum.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
arc.c L2ARC: Scan-based depth cap for persistent markers 2026-03-10 11:00:08 -07:00
blake3_zfs.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
blkptr.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
bplist.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
bpobj.c Pass flags to more DMU write/hold functions 2025-10-29 11:17:51 -07:00
bptree.c Pass flags to more DMU write/hold functions 2025-10-29 11:17:51 -07:00
bqueue.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
brt.c Add BRT support to zpool prefetch command 2025-11-10 16:16:22 -08:00
btree.c Move range_tree, btree, highbit64 to common code 2026-02-22 11:43:51 -08:00
dataset_kstats.c CI: Test & fix Linux ZFS built-in build 2026-02-19 10:15:41 -08:00
dbuf_stats.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
dbuf.c Remove parent ZIO from dbuf_prefetch() 2026-02-18 18:12:13 -08:00
ddt_log.c CI: Test & fix Linux ZFS built-in build 2026-02-19 10:15:41 -08:00
ddt_stats.c Introduce dedupused/dedupsaved pool properties 2026-02-25 09:41:38 -05:00
ddt_zap.c DDT: Fix compressed entry buffer size 2025-12-15 14:52:44 -08:00
ddt.c CI: Test & fix Linux ZFS built-in build 2026-02-19 10:15:41 -08:00
dmu_diff.c Allow physical rewrite without logical 2025-08-06 10:36:07 -07:00
dmu_direct.c Prefer VERIFY0P(n) over VERIFY3P(n, ==, NULL) 2025-08-07 11:41:42 -07:00
dmu_object.c Prefer VERIFY0P(n) over VERIFY3P(n, ==, NULL) 2025-08-07 11:41:42 -07:00
dmu_objset.c Allow rewrite skip cloned and snapshotted blocks 2026-02-09 10:17:56 -08:00
dmu_recv.c Fix activating large_microzap on receive 2026-02-05 15:48:03 -08:00
dmu_redact.c More consistent use of TREE_* macros in AVL comparators 2026-03-03 09:08:23 -08:00
dmu_send.c Prefer VERIFY0P(n) over VERIFY3P(n, ==, NULL) 2025-08-07 11:41:42 -07:00
dmu_traverse.c Allow physical rewrite without logical 2025-08-06 10:36:07 -07:00
dmu_tx.c Improve caching for dbuf prefetches 2026-02-04 10:12:32 -08:00
dmu_zfetch.c tunables: remove legacy FreeBSD aliases 2025-09-08 10:03:01 -07:00
dmu.c Cleanup allocation class selection 2026-02-16 10:33:21 -05:00
dnode_sync.c Prefer VERIFY0P(n) over VERIFY3P(n, ==, NULL) 2025-08-07 11:41:42 -07:00
dnode.c Update dnode_next_offset_level to accept blkid instead of offset 2025-11-04 13:12:17 -08:00
dsl_bookmark.c More consistent use of TREE_* macros in AVL comparators 2026-03-03 09:08:23 -08:00
dsl_crypt.c More consistent use of TREE_* macros in AVL comparators 2026-03-03 09:08:23 -08:00
dsl_dataset.c Add snapshots_changed_nsecs dataset property 2026-01-06 09:36:20 -08:00
dsl_deadlist.c More consistent use of TREE_* macros in AVL comparators 2026-03-03 09:08:23 -08:00
dsl_deleg.c More consistent use of TREE_* macros in AVL comparators 2026-03-03 09:08:23 -08:00
dsl_destroy.c Prefer VERIFY0P(n) over VERIFY3P(n, ==, NULL) 2025-08-07 11:41:42 -07:00
dsl_dir.c Prefer VERIFY0(n) over VERIFY(n == 0) 2025-08-07 11:40:59 -07:00
dsl_pool.c Prefer VERIFY0P(n) over VERIFY(n == NULL) 2025-08-07 11:41:37 -07:00
dsl_prop.c Prefer VERIFY0(n) over VERIFY(n == 0) 2025-08-07 11:40:59 -07:00
dsl_scan.c More consistent use of TREE_* macros in AVL comparators 2026-03-03 09:08:23 -08:00
dsl_synctask.c dmu_tx_assign: make all VERIFY0 calls use DMU_TX_SUSPEND 2025-05-28 10:28:59 -07:00
dsl_userhold.c Prefer VERIFY0(n) over VERIFY(n == 0) 2025-08-07 11:40:59 -07:00
edonr_zfs.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
fm.c Prefer VERIFY0(n) over VERIFY(n == 0) 2025-08-07 11:40:59 -07:00
gzip.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
hkdf.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
lz4_zfs.c SPDX: license tags: BSD-2-Clause 2025-03-13 17:56:46 -07:00
lz4.c SPDX: license tags: BSD-2-Clause 2025-03-13 17:56:46 -07:00
lzjb.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
metaslab.c Add zpool properties for allocation class space 2026-03-02 15:50:23 -08:00
mmp.c mmp: claim sequence id before final import 2026-02-09 09:36:01 -08:00
multilist.c Allow vmem_alloc backed multilists 2025-08-12 13:36:03 -07:00
objlist.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
pathname.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
range_tree.c range_tree: use zfs_panic_recover() for partial-overlap remove 2026-02-25 11:26:10 -08:00
refcount.c More consistent use of TREE_* macros in AVL comparators 2026-03-03 09:08:23 -08:00
rrwlock.c Prefer VERIFY0P(n) over VERIFY(n == NULL) 2025-08-07 11:41:37 -07:00
sa.c Lock db_mtx around arc_release() in couple places 2026-01-26 21:32:16 -05:00
sha2_zfs.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
skein_zfs.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
spa_checkpoint.c Pass flags to more DMU write/hold functions 2025-10-29 11:17:51 -07:00
spa_config.c spa_misc: add an API for spa_namespace_lock 2025-11-10 14:23:39 -08:00
spa_errlog.c Allow physical rewrite without logical 2025-08-06 10:36:07 -07:00
spa_history.c Pass flags to more DMU write/hold functions 2025-10-29 11:17:51 -07:00
spa_log_spacemap.c Fix available space accounting for special/dedup (#18222) 2026-02-19 10:36:35 -08:00
spa_misc.c More consistent use of TREE_* macros in AVL comparators 2026-03-03 09:08:23 -08:00
spa_stats.c Prefer VERIFY0(n) over VERIFY(n == 0) 2025-08-07 11:40:59 -07:00
spa.c Add zpool properties for allocation class space 2026-03-02 15:50:23 -08:00
space_map.c Pass flags to more DMU write/hold functions 2025-10-29 11:17:51 -07:00
space_reftree.c Prefer VERIFY0(n) over VERIFY(n == 0) 2025-08-07 11:40:59 -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 txg_wait_synced_flags: add TXG_WAIT_SUSPEND flag to not wait if pool suspended 2025-05-28 10:27:46 -07:00
u8_textprep.c u8_textprep: move into module/zfs 2025-12-22 14:58:36 -08:00
uberblock.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
unique.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
vdev_draid_rand.c SPDX: license tags: LicenseRef-OpenZFS-ThirdParty-PublicDomain 2025-03-13 17:57:31 -07:00
vdev_draid.c Detect a slow raidz child during reads 2025-09-10 15:25:03 -07:00
vdev_file.c Add vdev property to disable vdev scheduler 2026-02-23 09:34:33 -08:00
vdev_indirect_births.c Pass flags to more DMU write/hold functions 2025-10-29 11:17:51 -07:00
vdev_indirect_mapping.c Pass flags to more DMU write/hold functions 2025-10-29 11:17:51 -07:00
vdev_indirect.c Prefer VERIFY0P(n) over VERIFY3P(n, ==, NULL) 2025-08-07 11:41:42 -07:00
vdev_initialize.c spa_misc: add an API for spa_namespace_lock 2025-11-10 14:23:39 -08:00
vdev_label.c mmp: claim sequence id before final import 2026-02-09 09:36:01 -08:00
vdev_mirror.c Allow physical rewrite without logical 2025-08-06 10:36:07 -07:00
vdev_missing.c Implement allocation size ranges and use for gang leaves (#17111) 2025-05-02 15:32:18 -07:00
vdev_queue.c More consistent use of TREE_* macros in AVL comparators 2026-03-03 09:08:23 -08:00
vdev_raidz_math_aarch64_neon_common.h SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
vdev_raidz_math_aarch64_neon.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
vdev_raidz_math_aarch64_neonx2.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
vdev_raidz_math_avx2.c Convert all HAVE_<name> SIMD gates to HAVE_SIMD(<name>) 2026-03-05 15:01:37 -08:00
vdev_raidz_math_avx512bw.c Convert all HAVE_<name> SIMD gates to HAVE_SIMD(<name>) 2026-03-05 15:01:37 -08:00
vdev_raidz_math_avx512f.c Convert all HAVE_<name> SIMD gates to HAVE_SIMD(<name>) 2026-03-05 15:01:37 -08:00
vdev_raidz_math_impl.h SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
vdev_raidz_math_powerpc_altivec_common.h SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
vdev_raidz_math_powerpc_altivec.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
vdev_raidz_math_scalar.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
vdev_raidz_math_sse2.c Convert all HAVE_<name> SIMD gates to HAVE_SIMD(<name>) 2026-03-05 15:01:37 -08:00
vdev_raidz_math_ssse3.c Convert all HAVE_<name> SIMD gates to HAVE_SIMD(<name>) 2026-03-05 15:01:37 -08:00
vdev_raidz_math.c Convert all HAVE_<name> SIMD gates to HAVE_SIMD(<name>) 2026-03-05 15:01:37 -08:00
vdev_raidz.c RAIDZ: Remove some excessive logging 2025-12-17 14:00:01 -08:00
vdev_rebuild.c Fix vdev_rebuild_range() tx commit 2026-03-03 09:05:34 -08:00
vdev_removal.c Fix log vdev removal issues 2026-03-04 09:12:14 -05:00
vdev_root.c Implement allocation size ranges and use for gang leaves (#17111) 2025-05-02 15:32:18 -07:00
vdev_trim.c spa_misc: add an API for spa_namespace_lock 2025-11-10 14:23:39 -08:00
vdev.c Add vdev property to disable vdev scheduler 2026-02-23 09:34:33 -08:00
zap_leaf.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
zap_micro.c DDT: Add/use zap_lookup_length_uint64_by_dnode() 2025-12-15 14:38:34 -08:00
zap.c DDT: Add/use zap_lookup_length_uint64_by_dnode() 2025-12-15 14:38:34 -08:00
zcp_get.c Add snapshots_changed_nsecs dataset property 2026-01-06 09:36:20 -08:00
zcp_global.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
zcp_iter.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
zcp_set.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
zcp_synctask.c zcp_synctask: add zfs.sync.clone() 2025-06-10 14:53:10 -07:00
zcp.c Prefer VERIFY0P(n) over VERIFY3P(n, ==, NULL) 2025-08-07 11:41:42 -07:00
zfeature.c Synchronize the update of feature refcount 2025-08-22 16:35:58 -07:00
zfs_byteswap.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
zfs_chksum.c chksum: run 256K benchmark on demand, preserve chksum_stat_data 2025-12-01 10:14:52 -08:00
zfs_crrd.c Fix time database update calculations 2025-09-12 16:33:36 -07:00
zfs_debug_common.c nvlist: Add nvlist_snprintf() and zfs_dbgmsg_nvlist() 2025-04-18 09:22:16 -04:00
zfs_fm.c Fix snapshot automount expiry cancellation deadlock 2025-12-01 14:43:42 -08:00
zfs_fuid.c More consistent use of TREE_* macros in AVL comparators 2026-03-03 09:08:23 -08:00
zfs_impl.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
zfs_ioctl.c Fix send:raw permission for send -w -I 2026-02-11 10:30:26 -08:00
zfs_log.c ZIL: pass commit errors back to ITX callbacks 2025-08-08 16:43:20 -07:00
zfs_onexit.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
zfs_quota.c Bypass snprintf() in quota checks if no quotas set 2025-12-17 21:59:47 -05:00
zfs_ratelimit.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
zfs_replay.c dmu_tx: rename dmu_tx_assign() flags from TXG_* to DMU_TX_* (#17143) 2025-03-18 16:04:22 -07:00
zfs_rlock.c Prefer VERIFY0(n) over VERIFY3U(n, ==, 0) 2025-08-07 11:41:25 -07:00
zfs_sa.c ZIL: allow zil_commit() to fail with error 2025-08-08 16:43:09 -07:00
zfs_vnops.c Restrict cloning with different properties 2026-02-10 09:53:24 -08:00
zfs_znode.c Add default user/group/project quota properties 2025-04-03 10:35:22 -07:00
zil.c Fix log vdev removal issues 2026-03-04 09:12:14 -05:00
zio_checksum.c Prefer VERIFY0(n) over VERIFY(n == 0) 2025-08-07 11:40:59 -07:00
zio_compress.c CI: Test & fix Linux ZFS built-in build 2026-02-19 10:15:41 -08:00
zio_inject.c spa_misc: add an API for spa_namespace_lock 2025-11-10 14:23:39 -08:00
zio.c More consistent use of TREE_* macros in AVL comparators 2026-03-03 09:08:23 -08:00
zle.c SPDX: license tags: CDDL-1.0 2025-03-13 17:56:27 -07:00
zrlock.c Prefer VERIFY0P(n) over VERIFY3P(n, ==, NULL) 2025-08-07 11:41:42 -07:00
zthr.c Prefer VERIFY0P(n) over VERIFY3P(n, ==, NULL) 2025-08-07 11:41:42 -07:00
zvol.c spa_misc: add an API for spa_namespace_lock 2025-11-10 14:23:39 -08:00