Re: [PATCH 03/61] trace: update VFS-layer trace events for u64 i_ino

Jan Kara
2026-02-26T17:11:16Z

On Thu 26-02-26 10:55:05, Jeff Layton wrote:
> Update trace event definitions in VFS-layer trace headers to use u64
> instead of ino_t/unsigned long for inode number fields, and change
> format strings from %lu/%lx to %llu/%llx to match.
>
> This is needed because i_ino is now u64. Changing trace event field
> types changes the binary trace format, but the self-describing format
> metadata handles this transparently for modern trace-cmd and perf.
>
> Files updated:
> - cachefiles.h, filelock.h, filemap.h, fs_dax.h, fsverity.h,
> hugetlbfs.h, netfs.h, readahead.h, timestamp.h, writeback.h
>
> Signed-off-by: Jeff Layton <jlayton@kernel.org>

...

> diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h
> index 4d3d8c8f3a1bc3e5ef10fc96e3c6dbbd0cf00c98..cc7651749eb3ce1123cb3ea9496f0803a0f4c1a0 100644
> --- a/include/trace/events/writeback.h
> +++ b/include/trace/events/writeback.h
> @@ -67,7 +67,7 @@ DECLARE_EVENT_CLASS(writeback_folio_template,
>
> TP_STRUCT__entry (
> __array(char, name, 32)
> - __field(ino_t, ino)
> + __field(u64, ino)
> __field(pgoff_t, index)
> ),
>
> @@ -79,9 +79,9 @@ DECLARE_EVENT_CLASS(writeback_folio_template,
> __entry->index = folio->index;
> ),
>
> - TP_printk("bdi %s: ino=%lu index=%lu",
> + TP_printk("bdi %s: ino=%llu index=%lu",
> __entry->name,
> - (unsigned long)__entry->ino,
> + (unsigned long long)__entry->ino,

No need for explicit typing to ULL?

> __entry->index
> )
> );
> @@ -108,7 +108,7 @@ DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
>
> TP_STRUCT__entry (
> __array(char, name, 32)
> - __field(ino_t, ino)
> + __field(u64, ino)
> __field(unsigned long, state)
> __field(unsigned long, flags)
> ),
> @@ -123,9 +123,9 @@ DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
> __entry->flags = flags;
> ),
>
> - TP_printk("bdi %s: ino=%lu state=%s flags=%s",
> + TP_printk("bdi %s: ino=%llu state=%s flags=%s",
> __entry->name,
> - (unsigned long)__entry->ino,
> + (unsigned long long)__entry->ino,

And here as well? And many times below as well...

Honza
--
Jan Kara <jack@suse.com>
SUSE Labs, CR