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linux/include/trace/events
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Li Chen 87e79fa122 ext4: mark inode format migration fast-commit ineligible 
Fast commits only log operations that have dedicated replay support.
Inode format migration (indirect<->extent layout changes via
EXT4_IOC_MIGRATE or toggling EXT4_EXTENTS_FL) rewrites the block mapping
representation without going through the fast commit tracking paths.
In practice these migrations are rare and usually followed by further
updates, but mixing them into a fast commit makes the overall semantics
harder to reason about and risks replay gaps if new call sites appear.

Teach ext4 to mark the filesystem fast-commit ineligible when
ext4_ext_migrate() or ext4_ind_migrate() start their journal transactions.
This forces those transactions to fall back to a full commit, ensuring
that the entire inode layout change is captured by the normal journal
rather than partially encoded in fast commit TLVs. This change should
not affect common workloads but makes format migrations safer and easier
to reason about under fast commit.

Testing:
1. prepare:
    dd if=/dev/zero of=/root/fc.img bs=1M count=0 seek=128
    mkfs.ext4 -O fast_commit -F /root/fc.img
    mkdir -p /mnt/fc && mount -t ext4 -o loop /root/fc.img /mnt/fc
2.  Created a test file and toggled the extents flag to exercise both
    ext4_ind_migrate() and ext4_ext_migrate():
    touch /mnt/fc/migtest
    chattr -e /mnt/fc/migtest
    chattr +e /mnt/fc/migtest
3. Verified fast-commit ineligible statistics:
    tail -n 1 /proc/fs/ext4/loop0/fc_info
    "Inode format migration":       2

Signed-off-by: Li Chen <me@linux.beauty>
Link: https://patch.msgid.link/20251211115146.897420-2-me@linux.beauty
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2026-01-19 19:26:35 -05:00
..
9p.h 9p: prevent read overrun in protocol dump tracepoint 2023-12-05 21:18:44 +09:00
afs.h afs: Add support for RENAME_NOREPLACE and RENAME_EXCHANGE 2025-09-25 09:19:07 +02:00
alarmtimer.h alarmtimer: Hide alarmtimer_suspend event when RTC_CLASS is not configured 2025-07-21 16:40:56 -04:00
amdxdna.h accel/amdxdna: Add command execution 2024-11-22 11:43:27 -07:00
asoc.h ASoC: asoc.h: convert to snd_soc_dapm_xxx() 2025-11-17 00:14:25 +00:00
avc.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
bcache.h
block.h block: fix blk_zone_append_update_request_bio() kernel-doc 2025-07-16 10:02:18 -06:00
bpf_test_run.h bpf: add bpf_modify_return_test_tp() kfunc triggering tracepoint 2024-03-28 18:31:40 -07:00
bridge.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
btrfs.h Summary of significant series in this pull request: 2025-07-31 14:57:54 -07:00
cachefiles.h cachefiles: Add auxiliary data trace 2024-12-20 22:34:05 +01:00
capability.h security: add trace event for cap_capable 2024-12-04 20:59:21 -06:00
ceph.h ceph: add trace points to the MDS client 2025-12-10 11:50:54 +01:00
cgroup.h cgroup: remove per-cpu per-subsystem locks 2025-06-17 10:01:18 -10:00
clk.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
cma.h mm/cma: add 'available count' and 'total count' to trace_cma_alloc_start 2025-09-13 16:55:15 -07:00
compaction.h mm: compaction: update the cc->nr_migratepages when allocating or freeing the freepages 2024-02-22 10:24:50 -08:00
context_tracking.h
cpuhp.h
csd.h smp: Change function signatures to use call_single_data_t 2023-09-13 14:59:24 +02:00
damon.h mm/damon: add trace event for effective size quota 2025-07-13 16:38:33 -07:00
devfreq.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
devlink.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
dlm.h dlm: remove lkb from callback tracepoints 2024-04-01 13:31:12 -05:00
dma.h dma-mapping: fix direction in dma_alloc direction traces 2025-10-03 08:45:09 +02:00
dma_fence.h dma-fence: Add safe access helpers and document the rules 2025-06-13 08:26:49 +01:00
erofs.h erofs: remove unused trace event erofs_destroy_inode 2025-06-18 13:41:16 +08:00
error_report.h
exceptions.h x86/tracing, x86/mm: Move page fault tracepoints to generic 2025-05-16 10:13:59 +02:00
ext4.h ext4: mark inode format migration fast-commit ineligible 2026-01-19 19:26:35 -05:00
f2fs.h f2fs: optimize trace_f2fs_write_checkpoint with enums 2025-12-04 02:00:06 +00:00
fib.h ipv4: Convert ->flowi4_tos to dscp_t. 2025-08-26 17:34:31 -07:00
fib6.h tracing: ipv6: Add flow label to fib6_table_lookup tracepoint 2024-12-19 16:02:22 +01:00
filelock.h vfs-6.18-rc1.inode 2025-09-29 09:42:30 -07:00
filemap.h filemap: add trace events for get_pages, map_pages, and fault 2024-09-01 20:26:10 -07:00
firewire.h firewire: core: rename cause flag of tracepoints event 2024-09-12 22:30:38 +09:00
firewire_ohci.h firewire: ohci: add tracepoints event for data of Self-ID DMA 2024-07-04 09:07:14 +09:00
fs_dax.h mm: update core kernel code to use vm_flags_t consistently 2025-07-09 22:42:13 -07:00
fscache.h cachefiles: fix slab-use-after-free in fscache_withdraw_volume() 2024-07-03 10:36:14 +02:00
fsi.h fsi: core: Add trace events for scan and unregister 2023-08-09 15:43:28 +09:30
fsi_master_aspeed.h
fsi_master_ast_cf.h
fsi_master_gpio.h
fsi_master_i2cr.h fsi: Add IBM I2C Responder virtual FSI master 2023-08-11 13:32:14 +09:30
gpio.h
gpu_mem.h
habanalabs.h accel/habanalabs: fix typo in trace output (cms -> cmd) 2025-09-25 09:09:28 +03:00
handshake.h net/handshake: Trace events for TLS Alert helpers 2023-07-28 14:07:59 -07:00
host1x.h
huge_memory.h mm/khugepaged: unify SCAN_PMD_NONE and SCAN_PMD_NULL into SCAN_NO_PTE_TABLE 2025-11-24 15:08:52 -08:00
hugetlbfs.h hugetlb: fix NULL pointer dereference in trace_hugetlbfs_alloc_inode 2025-01-12 19:03:36 -08:00
hw_pressure.h sched/cpufreq: Rename arch_update_thermal_pressure() => arch_update_hw_pressure() 2024-04-24 12:08:01 +02:00
hwmon.h hwmon: Introduce 64-bit energy attribute support 2025-09-07 16:33:48 -07:00
i2c.h
i2c_slave.h
ib_mad.h IB/mad: Don't call to function that might sleep while in atomic context 2022-11-10 10:57:15 +02:00
ib_umad.h
icmp.h net/ipv4: add tracepoint for icmp_send 2024-05-08 10:39:26 +01:00
initcall.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
intel-sst.h
intel_ifs.h trace: platform/x86/intel/ifs: Add SBAF trace support 2024-08-12 16:36:11 +02:00
intel_ish.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
io_uring.h io_uring/trace: rename io_uring_queue_async_work event "rw" field 2025-12-04 07:18:02 -07:00
iocost.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
iommu.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
ipi.h tracing: arm: arm64: Hide trace events ipi_raise, ipi_entry and ipi_exit 2025-07-23 14:58:55 -04:00
irq.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
irq_matrix.h genirq/matrix: Remove unused irq_matrix_alloc_reserved tracepoint 2025-06-02 13:12:26 -04:00
iscsi.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
jbd2.h jbd2: remove journal_clean_one_cp_list() 2023-07-10 23:09:21 -04:00
kmem.h kmem/tracing: add kmem name to kmem_cache_alloc tracepoint 2025-09-13 16:55:18 -07:00
ksm.h mm/ksm: add tracepoint for ksm advisor 2023-12-29 11:58:27 -08:00
kvm.h LoongArch: KVM: Move kvm_iocsr tracepoint out of generic code 2025-09-23 23:37:26 +08:00
kyber.h kyber: Replace strlcpy with strscpy 2023-07-17 08:18:17 -06:00
libata.h
lock.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
maple_tree.h Maple Tree: add new data structure 2022-09-26 19:46:13 -07:00
mce.h x86/MCE/AMD: Add support for new MCA_SYND{1,2} registers 2024-10-31 10:36:07 +01:00
mctp.h
mdio.h trace: events: cleanup deprecated strncpy uses 2024-04-05 22:10:25 -07:00
memcg.h memcg: add flush tracepoint 2024-11-11 00:26:46 -08:00
memory-failure.h mm/memory-failure: remove the selection of RAS 2025-11-24 15:08:55 -08:00
migrate.h mm/migrate: add MR_DAMON to migrate_reason 2024-07-03 19:30:12 -07:00
mlxsw.h
mmap.h mm: remove unused mmap tracepoints 2025-07-09 22:41:55 -07:00
mmap_lock.h mm: mmap_lock: optimize mmap_lock tracepoints 2025-01-13 22:40:34 -08:00
mmc.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
mmflags.h mm: introduce VM_MAYBE_GUARD and make visible in /proc/$pid/smaps 2025-11-20 13:43:58 -08:00
module.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
mptcp.h mptcp: sched: check both directions for backup 2024-07-30 10:27:29 +02:00
napi.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
nbd.h nbd: Use NULL to represent a pointer 2024-05-14 07:22:35 -06:00
neigh.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
net.h net: add net cookie for net device trace events 2025-11-04 09:59:19 +01:00
net_probe_common.h trace: adjust TP_STORE_ADDR_PORTS_SKB() parameters 2024-04-03 19:26:14 -07:00
netfs.h netfs: Fix race between cache write completion and ALL_QUEUED being set 2025-07-14 11:05:02 +02:00
netlink.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
nilfs2.h nilfs2: use __field_struct() for a bitwise field 2024-05-11 15:51:43 -07:00
nmi.h
notifier.h notifiers: add tracepoints to the notifiers infrastructure 2023-04-08 13:45:38 -07:00
objagg.h
oom.h mm: improve code consistency with zonelist_* helper functions 2024-09-01 20:25:55 -07:00
osnoise.h trace/osnoise: Add trace events for samples 2025-02-26 19:44:30 -05:00
page_isolation.h
page_pool.h page_pool: devmem support 2024-09-11 20:44:31 -07:00
page_ref.h mm: introduce memdesc_flags_t 2025-09-13 16:55:07 -07:00
pagemap.h
percpu.h
power.h PM: Introduce new PMSG_POWEROFF event 2025-11-14 17:05:53 +01:00
power_cpu_migrate.h
preemptirq.h tracing: Remove definition of trace_*_rcuidle() 2024-10-08 21:17:39 -04:00
printk.h
pwc.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
pwm.h pwm: Add tracing for waveform callbacks 2024-09-28 15:13:56 +02:00
qdisc.h tracing/net_sched: NULL pointer dereference in perf_trace_qdisc_reset() 2024-06-27 11:06:30 +02:00
qla.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
qrtr.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
rcu.h RCU pull request for v6.15 2025-03-24 19:41:37 -07:00
rdma_core.h
readahead.h readahead: add trace points 2025-09-21 14:22:28 -07:00
regulator.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
rpcgss.h sunrpc: implement rfc2203 rpcsec_gss seqnum cache 2025-05-19 10:14:29 -04:00
rpcrdma.h svcrdma: Handle device removal outside of the CM event handler 2024-09-20 19:31:03 -04:00
rpm.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
rseq.h rseq: Cache CPU ID and MM CID values 2025-11-04 08:32:14 +01:00
rtc.h
rust_sample.h rust: samples: add tracepoint to Rust sample 2024-11-04 16:21:44 -05:00
rwmmio.h asm-generic/io: Add _RET_IP_ to MMIO trace for more accurate debug info 2022-11-21 22:02:10 +01:00
rxrpc.h rxrpc: Fix notification vs call-release vs recvmsg 2025-07-17 07:50:48 -07:00
sched.h tracing changes for 6.17 2025-08-01 10:29:36 -07:00
sched_ext.h sched_ext: Implement load balancer for bypass mode 2025-11-12 06:43:44 -10:00
scmi.h include: trace: Add tracepoint support for inflight xfer count 2025-07-03 16:18:09 +01:00
scsi.h scsi: trace: Show rtn in string for scsi_dispatch_cmd_error() 2025-06-09 21:59:07 -04:00
sctp.h
signal.h
siox.h
skb.h net: add rx_sk to trace_kfree_skb 2024-06-19 12:44:22 +01:00
smbus.h
sock.h net: Retire DCCP socket. 2025-04-11 18:58:10 -07:00
sof.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
sof_intel.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
spi-mem.h spi: spi-mem: Trace exec_op 2025-10-27 11:10:50 +00:00
spi.h spi: Fix spelling typos and acronyms capitalization 2023-07-11 14:14:32 +01:00
spmi.h
sunrpc.h sunrpc: remove SVC_SYSERR 2025-07-14 12:46:48 -04:00
sunvnet.h
swiotlb.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
syscalls.h tracing: Declare system call tracepoints with TRACE_EVENT_SYSCALL 2024-10-09 17:05:54 -04:00
target.h scsi: usb: Rename the RESERVE and RELEASE constants 2025-02-12 22:20:55 -05:00
task.h copy_process: pass clone_flags as u64 across calltree 2025-09-01 15:31:34 +02:00
tcp.h trace: tcp: add three metrics to trace_tcp_rcvbuf_grow() 2025-10-29 17:30:18 -07:00
tegra_apb_dma.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
thp.h powerpc/thp: tracing: Hide hugepage events under CONFIG_PPC_BOOK3S_64 2025-07-25 08:58:07 -04:00
timer.h tracing/timers: Rename the hrtimer_init event to hrtimer_setup 2025-04-05 10:30:17 +02:00
timer_migration.h timers/migration: Rename 'online' bit to 'available' 2025-11-20 20:17:31 +01:00
timestamp.h fs: tracepoints around multigrain timestamp events 2024-10-10 10:20:52 +02:00
tlb.h x86/mm/tlb/trace: Export the TLB_REMOTE_WRONG_CPU enum in <trace/events/tlb.h> 2025-12-13 11:01:16 +01:00
tsm_mr.h tsm-mr: Add TVM Measurement Register support 2025-05-08 19:17:33 -07:00
udp.h trace: adjust TP_STORE_ADDR_PORTS_SKB() parameters 2024-04-03 19:26:14 -07:00
v4l2.h
vb2.h
vmalloc.h mm: vmalloc: add free_vmap_area_noflush trace event 2022-11-08 17:37:17 -08:00
vmscan.h vmscan: add a vmscan event for reclaim_pages 2024-11-06 20:11:13 -08:00
vsock_virtio_transport_common.h vsock/virtio: MSG_ZEROCOPY flag support 2023-09-21 12:34:00 +02:00
watchdog.h watchdog: Add tracing events for the most usual watchdog events 2022-10-12 09:47:02 +02:00
wbt.h blk-wbt: Replace strlcpy with strscpy 2023-07-17 08:18:17 -06:00
workqueue.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
writeback.h Manual conversion to use ->i_state accessors of all places not covered by coccinelle 2025-10-20 20:22:26 +02:00
xdp.h xdp: tracing: Hide some xdp events under CONFIG_BPF_SYSCALL 2025-06-12 19:36:53 -07:00
xen.h x86/xen: move paravirt lazy code 2023-09-19 07:04:49 +02:00